{"transactions":[{"id":743917,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2026-06-10T15:33:22.000Z","date":"2026-06-08","kind":"sale","planned":false,"acquired":false,"shares":2000,"price":63.9811,"value":127962.2,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.72 to $64.17, inclusive. The reporting person undertakes to provide Community Financial System, Inc., any security holder of Community Financial System, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."}],"balance_after":31592,"source":{"system":"sec-edgar","filing":"0000723188-26-000096","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000072318826000096/form4.xml","form_type":"4"}},{"id":836178,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2026-03-18T16:25:53.000Z","date":"2026-03-17","kind":"grant","planned":false,"acquired":true,"shares":1220,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"LTIP\"). Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"LTIP\"). Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"LTIP\"). Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":5234.5421,"derivative":{"underlying":"Common Stock","underlying_shares":1220},"source":{"system":"sec-edgar","filing":"0000723188-26-000052","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000072318826000052/form4.xml","form_type":"4"}},{"id":840323,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2026-03-17T19:33:43.000Z","date":"2026-03-16","kind":"exercise","planned":false,"acquired":false,"shares":250,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"LTIP\"). Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On March 16, 2026, the reporting person's phantom stock units were settled for 250 shares of Community Financial System, Inc. common stock, and .9119 shares were settled in cash at the price of $57.42 per share.\""},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"LTIP\"). Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"LTIP\"). Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 32.1998, 35.6078 and 32.6668 units of phantom stock acquired on July 10, 2025, October 10, 2025 and January 12, 2026 under the Plan's dividend reinvestment feature."}],"balance_after":4014.5421,"derivative":{"underlying":"Common Stock","underlying_shares":250},"source":{"system":"sec-edgar","filing":"0000723188-26-000045","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/723188/000072318826000045/form4.xml","form_type":"4"}},{"id":840322,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2026-03-17T19:33:43.000Z","date":"2026-03-16","kind":"exercise","planned":false,"acquired":true,"shares":250,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On March 16, 2026, the reporting person's phantom stock units were settled for 250 shares of Community Financial System, Inc. common stock, and .9119 shares were settled in cash at the price of $57.42 per share.\""}],"balance_after":33592,"source":{"system":"sec-edgar","filing":"0000723188-26-000045","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000072318826000045/form4.xml","form_type":"4"}},{"id":918558,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2026-02-05T19:45:32.000Z","date":"2026-02-03","kind":"sale","planned":false,"acquired":false,"shares":2000,"price":64.746,"value":129492.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.60 to $64.805, inclusive. The reporting person undertakes to provide Community Financial System, Inc., any security holder of Community Financial System, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."}],"balance_after":33342,"source":{"system":"sec-edgar","filing":"0000723188-26-000004","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000072318826000004/form4.xml","form_type":"4"}},{"id":1171401,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2025-04-16T20:06:15.000Z","date":"2025-04-14","kind":"exercise","planned":false,"acquired":false,"shares":3,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 30.0748 units of phantom stock acquired on April 10, 2025 under the Plan's dividend reinvestment feature."}],"balance_after":4164.9796,"derivative":{"underlying":"Common Stock","underlying_shares":3},"source":{"system":"sec-edgar","filing":"0001127602-25-012116","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760225012116/form4.xml","form_type":"4"}},{"id":1171400,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2025-04-16T20:06:15.000Z","date":"2025-04-14","kind":"exercise","planned":false,"acquired":true,"shares":3,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On April 14, 2025, the reporting person's phantom stock units were settled for 3 shares of Community Financial System, Inc. common stock, and .8351 shares were settled in cash at the price of $51.47 per share.\""}],"balance_after":35342,"source":{"system":"sec-edgar","filing":"0001127602-25-012116","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760225012116/form4.xml","form_type":"4"}},{"id":1197876,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2025-03-19T15:23:42.000Z","date":"2025-03-18","kind":"grant","planned":false,"acquired":true,"shares":1225,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":4138.7399,"derivative":{"underlying":"Common Stock","underlying_shares":1225},"source":{"system":"sec-edgar","filing":"0001127602-25-009923","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760225009923/form4.xml","form_type":"4"}},{"id":1202563,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2025-03-18T13:53:27.000Z","date":"2025-03-17","kind":"exercise","planned":false,"acquired":false,"shares":451,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Financial System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Financial System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 102.5299 units of phantom stock acquired as dividend equivalents under the Plan."}],"balance_after":2913.7399,"derivative":{"underlying":"Common Stock","underlying_shares":451},"source":{"system":"sec-edgar","filing":"0001127602-25-009718","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760225009718/form4.xml","form_type":"4"}},{"id":1202562,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2025-03-18T13:53:27.000Z","date":"2025-03-17","kind":"exercise","planned":false,"acquired":true,"shares":451,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On March 17, 2025, the reporting person's phantom stock units were settled for 451 shares of Community Financial System, Inc. common stock, and .3719 shares were settled in cash at the price of $57.23 per share"}],"balance_after":35339,"source":{"system":"sec-edgar","filing":"0001127602-25-009718","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760225009718/form4.xml","form_type":"4"}},{"id":1565480,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2024-03-21T15:18:32.000Z","date":"2024-03-19","kind":"grant","planned":false,"acquired":true,"shares":1395,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":3262.5819,"derivative":{"underlying":"Common Stock","underlying_shares":1395},"source":{"system":"sec-edgar","filing":"0001127602-24-010871","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760224010871/form4.xml","form_type":"4"}},{"id":1571282,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2024-03-19T16:05:36.000Z","date":"2024-03-15","kind":"exercise","planned":false,"acquired":false,"shares":431.7767,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 94.1994 units of phantom stock acquired as dividend equivalents under the Plan."}],"balance_after":1867.5819,"derivative":{"underlying":"Common Stock","underlying_shares":431.7767},"source":{"system":"sec-edgar","filing":"0001127602-24-010573","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760224010573/form4.xml","form_type":"4"}},{"id":1571281,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2024-03-19T16:05:36.000Z","date":"2024-03-15","kind":"exercise","planned":false,"acquired":true,"shares":431.7767,"price":43.65,"value":18847.052955,"ownership":{"direct":true},"balance_after":34889.9727,"source":{"system":"sec-edgar","filing":"0001127602-24-010573","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760224010573/form4.xml","form_type":"4"}},{"id":1740170,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2023-11-16T21:00:38.000Z","date":"2023-11-15","kind":"exercise","planned":false,"acquired":false,"shares":303.6361,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":2204.6592,"derivative":{"underlying":"Common Stock","underlying_shares":303.6361},"source":{"system":"sec-edgar","filing":"0001127602-23-027565","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760223027565/form4.xml","form_type":"4"}},{"id":1740169,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-11-16T21:00:38.000Z","date":"2023-11-15","kind":"exercise","planned":false,"acquired":true,"shares":303.6361,"price":44.87,"value":13624.151807,"ownership":{"direct":true},"balance_after":34458.196,"source":{"system":"sec-edgar","filing":"0001127602-23-027565","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760223027565/form4.xml","form_type":"4"}},{"id":1949020,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2023-03-17T16:25:24.000Z","date":"2023-03-15","kind":"exercise","acquired":false,"shares":885.0927,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":2508.2953,"derivative":{"underlying":"Common Stock","underlying_shares":885.0927},"source":{"system":"sec-edgar","filing":"0001127602-23-010507","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760223010507/form4.xml","form_type":"4"}},{"id":1949019,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-03-17T16:25:24.000Z","date":"2023-03-15","kind":"exercise","acquired":true,"shares":885.0927,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"On March 15, 2023, the reporting person's phantom stock units were settled for an equal number of shares of Community Bank System, Inc. common stock."}],"balance_after":34154.5599,"source":{"system":"sec-edgar","filing":"0001127602-23-010507","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760223010507/form4.xml","form_type":"4"}},{"id":1951327,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2023-03-16T15:29:38.000Z","date":"2023-03-14","kind":"grant","acquired":true,"shares":1154,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2022 Long-Term Incentive Plan, as amended (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 70.3289 units of phantom stock acquired as dividend equivalents under the Plan."}],"balance_after":3393.388,"derivative":{"underlying":"Common Stock","underlying_shares":1154},"source":{"system":"sec-edgar","filing":"0001127602-23-010395","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760223010395/form4.xml","form_type":"4"}},{"id":1951326,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-03-16T15:29:38.000Z","date":"2023-03-15","kind":"other","acquired":true,"shares":4632.2031,"price":53.97,"value":250000.001307,"ownership":{"direct":false,"nature":"By Wife's Community Bank System, Inc. 401(k)"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The number of share reported herein were acquired pursuant to Community Bank System, Inc.'s 401(K) Plan and are based on a current plan statement."}],"balance_after":14005.767,"source":{"system":"sec-edgar","filing":"0001127602-23-010395","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760223010395/form4.xml","form_type":"4"}},{"id":2113714,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2022-11-17T16:10:59.000Z","date":"2022-11-15","kind":"exercise","acquired":false,"shares":525.4672,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":2169.0591,"derivative":{"underlying":"Common Stock","underlying_shares":525.4672},"source":{"system":"sec-edgar","filing":"0001127602-22-025896","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760222025896/form4.xml","form_type":"4"}},{"id":2113713,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-11-17T16:10:59.000Z","date":"2022-11-15","kind":"exercise","acquired":true,"shares":525.4672,"price":64.37,"value":33824.323664,"ownership":{"direct":true},"balance_after":33269.4672,"source":{"system":"sec-edgar","filing":"0001127602-22-025896","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760222025896/form4.xml","form_type":"4"}},{"id":2332182,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2022-03-16T22:38:00.000Z","date":"2022-03-15","kind":"grant","acquired":true,"shares":644,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan (the \"Plan\").  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 50.6854 units of phantom stock acquired as dividend equivalents under the Plan."}],"balance_after":2694.5263,"derivative":{"underlying":"Common Stock","underlying_shares":644},"source":{"system":"sec-edgar","filing":"0001127602-22-009530","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760222009530/form4.xml","form_type":"4"}},{"id":2509571,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2021-11-17T18:11:21.000Z","date":"2021-11-15","kind":"exercise","acquired":false,"shares":485.2372,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":1999.8409,"derivative":{"underlying":"Common Stock","underlying_shares":485.2372},"source":{"system":"sec-edgar","filing":"0001127602-21-029409","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760221029409/form4.xml","form_type":"4"}},{"id":2509570,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-11-17T18:11:21.000Z","date":"2021-11-15","kind":"exercise","acquired":true,"shares":485.2372,"price":74.18,"value":35994.895496,"ownership":{"direct":true},"balance_after":32754.2373,"source":{"system":"sec-edgar","filing":"0001127602-21-029409","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760221029409/form4.xml","form_type":"4"}},{"id":2784699,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2021-03-18T00:26:10.000Z","date":"2021-03-16","kind":"grant","acquired":true,"shares":569,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 51.6868 units of phantom stock acquired as dividend equivalents under the 2014 Long-Term Incentive Compensation Program"}],"balance_after":2485.0781,"derivative":{"underlying":"Common Stock","underlying_shares":569},"source":{"system":"sec-edgar","filing":"0001127602-21-011253","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760221011253/form4.xml","form_type":"4"}},{"id":2868070,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-02-11T21:27:48.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":3000,"price":70.76,"value":212280.0,"ownership":{"direct":true},"balance_after":32269.0001,"source":{"system":"sec-edgar","filing":"0001127602-21-005243","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760221005243/form4.xml","form_type":"4"}},{"id":2868069,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-02-11T21:27:48.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":3000,"price":70.63,"value":211890.0,"ownership":{"direct":true},"balance_after":35269.0001,"source":{"system":"sec-edgar","filing":"0001127602-21-005243","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760221005243/form4.xml","form_type":"4"}},{"id":2976649,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2020-11-18T18:43:26.000Z","date":"2020-11-16","kind":"exercise","acquired":false,"shares":396.4387,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":1864.3913,"derivative":{"underlying":"Common Stock","underlying_shares":396.4387},"source":{"system":"sec-edgar","filing":"0001127602-20-029405","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760220029405/form4.xml","form_type":"4"}},{"id":2976648,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-11-18T18:43:26.000Z","date":"2020-11-16","kind":"exercise","acquired":true,"shares":396.4387,"price":66.35,"value":26303.707745,"ownership":{"direct":true},"balance_after":38261.1211,"source":{"system":"sec-edgar","filing":"0001127602-20-029405","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760220029405/form4.xml","form_type":"4"}},{"id":2998419,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2020-10-30T01:13:38.000Z","date":"2020-10-28","kind":"grant","acquired":true,"shares":172,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":2260.83,"derivative":{"underlying":"Common Stock","underlying_shares":172},"source":{"system":"sec-edgar","filing":"0001127602-20-027678","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760220027678/form4.xml","form_type":"4"}},{"id":3203792,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2020-03-19T01:07:50.000Z","date":"2020-03-17","kind":"grant","acquired":true,"shares":667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 34.44 units of phantom stock acquired as dividend equivalents under the 2014 Long-Term Incentive Compensation Program"}],"balance_after":2088.83,"derivative":{"underlying":"Common Stock","underlying_shares":667},"source":{"system":"sec-edgar","filing":"0001127602-20-011365","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760220011365/form4.xml","form_type":"4"}},{"id":3367377,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2019-11-19T21:04:46.000Z","date":"2019-11-15","kind":"exercise","acquired":false,"shares":200.7548,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":1387.39,"derivative":{"underlying":"Common Stock","underlying_shares":200.7548},"source":{"system":"sec-edgar","filing":"0001127602-19-033193","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760219033193/form4.xml","form_type":"4"}},{"id":3367376,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-11-19T21:04:46.000Z","date":"2019-11-15","kind":"exercise","acquired":true,"shares":200.7548,"price":67.63,"value":13577.047124,"ownership":{"direct":true},"balance_after":37864.6824,"source":{"system":"sec-edgar","filing":"0001127602-19-033193","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760219033193/form4.xml","form_type":"4"}},{"id":3383146,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-11-04T21:06:24.000Z","date":"2019-11-01","kind":"sale","acquired":false,"shares":3000,"price":68.1232,"value":204369.6,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.1001 to $68.1693, inclusive. The reporting person undertakes to provide Community Bank System, Inc., any security holder of Community Bank System, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."}],"balance_after":37663.9276,"source":{"system":"sec-edgar","filing":"0001127602-19-031639","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760219031639/form4.xml","form_type":"4"}},{"id":3585423,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2019-03-20T21:52:05.000Z","date":"2019-03-20","kind":"grant","acquired":true,"shares":576,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Includes 20.4873 units of phantom stock acquired as dividend equivalents under the 2014 Long-Term Incentive Compensation Program"}],"balance_after":1588.1448,"derivative":{"underlying":"Common Stock","underlying_shares":576},"source":{"system":"sec-edgar","filing":"0001127602-19-012461","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760219012461/form4.xml","form_type":"4"}},{"id":3585422,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-03-20T21:52:05.000Z","date":"2019-03-20","kind":"other","acquired":true,"shares":1730,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares transferred to the reporting person's joint account with his wife."}],"balance_after":40663.9276,"source":{"system":"sec-edgar","filing":"0001127602-19-012461","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760219012461/form4.xml","form_type":"4"}},{"id":3585421,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-03-20T21:52:05.000Z","date":"2019-03-20","kind":"other","acquired":false,"shares":1730,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Wife"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares transferred to the reporting person's joint account with his wife."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001127602-19-012461","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760219012461/form4.xml","form_type":"4"}},{"id":3762522,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2018-11-16T20:47:18.000Z","date":"2018-11-15","kind":"exercise","acquired":false,"shares":188.9276,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 6.546 units of deferred stock acquired under the Plan's dividend reinvestment feature."}],"balance_after":991.6575,"derivative":{"underlying":"Common Stock","underlying_shares":188.9276},"source":{"system":"sec-edgar","filing":"0001127602-18-033389","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760218033389/form4.xml","form_type":"4"}},{"id":3762521,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-11-16T20:47:18.000Z","date":"2018-11-15","kind":"exercise","acquired":true,"shares":188.9276,"price":62.61,"value":11828.757036,"ownership":{"direct":true},"balance_after":38933.9276,"source":{"system":"sec-edgar","filing":"0001127602-18-033389","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760218033389/form4.xml","form_type":"4"}},{"id":3923115,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-05-22T20:12:32.000Z","date":"2018-05-21","kind":"sale","acquired":false,"shares":5000,"price":60.3,"value":301500.0,"ownership":{"direct":true},"balance_after":38745,"source":{"system":"sec-edgar","filing":"0001127602-18-018415","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760218018415/form4.xml","form_type":"4"}},{"id":3923114,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-05-22T20:12:32.000Z","date":"2018-05-21","kind":"sale","acquired":false,"shares":8075,"price":60.23,"value":486357.25,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On May 21, 2018, the reporting person received a distribution of 40,475 shares of common stock previously beneficially owned through the issuer's 401(k) Plan.  The distribution included 252.9634 shares acquired under the Plan's dividend reinvestment feature."}],"balance_after":43745,"source":{"system":"sec-edgar","filing":"0001127602-18-018415","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760218018415/form4.xml","form_type":"4"}},{"id":3985841,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2018-03-22T23:03:12.000Z","date":"2018-03-20","kind":"grant","acquired":true,"shares":611,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes 10.0391 units of deferred stock acquired under the Plan's dividend reinvestment feature."}],"balance_after":1174.0391,"derivative":{"underlying":"Common Stock","underlying_shares":611},"source":{"system":"sec-edgar","filing":"0001127602-18-012585","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760218012585/form4.xml","form_type":"4"}},{"id":4202866,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2017-09-25T21:12:15.000Z","date":"2017-09-22","kind":"sale","acquired":false,"shares":5000,"price":53.24,"value":266200.0,"ownership":{"direct":true},"balance_after":11345,"source":{"system":"sec-edgar","filing":"0001127602-17-028014","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760217028014/form4.xml","form_type":"4"}},{"id":4383495,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Phantom Stock (Deferred Stock Units)","published_at":"2017-03-16T22:53:41.000Z","date":"2017-03-15","kind":"grant","acquired":true,"shares":553,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The reporting person has received deferred stock units under the Community Bank System, Inc. 2014 Long-Term Incentive Plan.  Each phantom stock unit which represents a deferred stock unit is the economic equivalent of one share of Community Bank System, Inc. common stock and will be settled in common stock at a predetermined date."}],"balance_after":553,"derivative":{"underlying":"Common Stock","underlying_shares":553},"source":{"system":"sec-edgar","filing":"0001127602-17-012013","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760217012013/form4.xml","form_type":"4"}},{"id":4542449,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2016-11-25T20:57:34.000Z","date":"2016-11-18","kind":"tax_withholding","acquired":false,"shares":2942,"price":54.89,"value":161486.38,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This amendment is filed to correct the number of shares withheld by the Company."}],"balance_after":16345,"source":{"system":"sec-edgar","filing":"0001127602-16-068423","document":"form4a.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760216068423/form4a.xml","form_type":"4/A","original_submission_date":"2016-11-18"}},{"id":4549684,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Stock Option","published_at":"2016-11-18T21:50:47.000Z","date":"2016-11-18","kind":"exercise","acquired":false,"shares":4246,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":38.02,"exercise_date":"2016-03-16","expiration_date":"2026-03-16","underlying":"Common Stock","underlying_shares":4246},"source":{"system":"sec-edgar","filing":"0001127602-16-067772","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760216067772/form4.xml","form_type":"4"}},{"id":4549683,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2016-11-18T21:50:47.000Z","date":"2016-11-18","kind":"tax_withholding","acquired":false,"shares":3493,"price":54.89,"value":191730.77,"ownership":{"direct":true},"balance_after":15794,"source":{"system":"sec-edgar","filing":"0001127602-16-067772","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760216067772/form4.xml","form_type":"4"}},{"id":4549682,"issuer":{"id":4178,"kind":"organization","name":"COMMUNITY FINANCIAL SYSTEM, INC.","symbol":"CBU"},"owners":[{"id":39871,"kind":"person","name":"STICKELS ERIC","position":1,"cik":"0001201821","reported_name":"STICKELS ERIC","relationship":{"director":true}}],"security":"Common Stock","published_at":"2016-11-18T21:50:47.000Z","date":"2016-11-18","kind":"exercise","acquired":true,"shares":4246,"price":38.02,"value":161432.92,"ownership":{"direct":true},"balance_after":19287,"source":{"system":"sec-edgar","filing":"0001127602-16-067772","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/723188/000112760216067772/form4.xml","form_type":"4"}}]}