{"transactions":[{"id":1851107,"issuer":{"id":3696,"kind":"organization","name":"ARMSTRONG WORLD INDUSTRIES INC","symbol":"AWI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-06-20T20:54:59.000Z","date":"2023-06-16","kind":"grant","planned":false,"acquired":true,"shares":1778,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the 2016 Directors Stock Unit Plan, as amended, and as part of the Issuer's nonemployee Director Compensation Program. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the one-year anniversary of the grant; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan).  One share of common stock will be acquired by each Director for each vested unit, subject to the election of the Director:  (i) at the vesting of the units at the one-year anniversary of the grant or (ii) at the time of the Director's termination of service."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents an annual grant of restricted stock units as the equity portion of the Director's retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on June 16, 2023,  which price was $70.32."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes vested and unvested units as well as units not yet acquirable by the Director. Under the terms of the 2016 Directors Stock Unit Plan, as amended (the \"2016 Plan\"), vested units under the 2016 Plan are not acquirable by the Director until, at the election of the Director: (i) the vesting of the units at the one-year anniversary of the grant or (ii) the time of the Director's termination of service."}],"balance_after":27762,"source":{"system":"sec-edgar","filing":"0001127602-23-019021","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/7431/000112760223019021/form4.xml","form_type":"4"}},{"id":2199951,"issuer":{"id":3696,"kind":"organization","name":"ARMSTRONG WORLD INDUSTRIES INC","symbol":"AWI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-08-01T23:58:18.000Z","date":"2022-07-28","kind":"grant","acquired":true,"shares":229,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the 2016 Directors Stock Unit Plan, as amended (the \"2016 Plan\"), and as part of the Issuer's nonemployee Director Compensation Program. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the date of the first annual shareholders meeting following the grant; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan). Vested units will be acquirable by the Director, at the election of the Director: (i) at the vesting of the units on the date of the first annual shareholders meeting following the grant or (ii) at the time of the Director's termination of service."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents an annual grant of restricted stock units as the equity portion of the Director's retainer for Board service under the Issuer's nonemployee Director Compensation Program."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes vested and unvested units as well as units not yet acquirable by the Director. Under the terms of the 2008 Directors Stock Unit Plan, as amended (the \"2008 Plan\"), vested units under the 2008 Plan are not acquirable by the Director until (i) for those restricted stock units granted prior to June 2011, six (6) months following the termination of service on the Issuer's Board of Directors, and, (ii) for those units granted during and after June 2011, at the time of termination of service on the Issuer's Board of Directors. Under the terms of the 2016 Plan, vested units are not acquirable by the Director until, at the election of the Director: (i) the vesting of the units on the date of the first annual shareholders meeting following the grant or (ii) the time of the Director's termination of service. Also includes 4,229 shares of Common Stock held by the Director."}],"balance_after":25984,"source":{"system":"sec-edgar","filing":"0000899243-22-027239","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/7431/000089924322027239/doc4.xml","form_type":"4"}},{"id":2226393,"issuer":{"id":3696,"kind":"organization","name":"ARMSTRONG WORLD INDUSTRIES INC","symbol":"AWI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-06-21T20:37:52.000Z","date":"2022-06-17","kind":"grant","acquired":true,"shares":1406,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the 2016 Directors Stock Unit Plan, as amended, and as part of the Issuer's nonemployee Director Compensation Program.  The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the one-year anniversary of the grant; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan).  Vested units will be acquirable by the Director, at the election of the Director: (i) at the vesting of the units at the one-year anniversary of the grant or (ii) at the time of the Director's termination of service."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents an annual grant of restricted stock units as the equity portion of the Director's retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on June 17, 2022, the first business day following the Issuer's Annual Meeting of Shareholders, which price was $74.70."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes vested and unvested units as well as units not yet acquirable by the Director.  Under the terms of the 2008 Directors Stock Unit Plan,  as amended (the \"2008 Plan\"), vested units under the 2008 Plan are not acquirable by the Director until (i) for those restricted stock units granted prior to June 2011, six (6) months following the termination of service on the Issuer's Board of Directors, and, (ii) for those units granted during and after June 2011, at the time of termination of service on the Issuer's Board of Directors.  Under the terms of the 2016 Directors Stock Unit Plan, as amended (the \"2016 Plan\"), vested units under the 2016 Plan are not acquirable by the Director until, at the election of the Director:  (i) the vesting of the units at the one-year anniversary of the grant or (ii) the time of the Director's termination of service.  Also includes 4,229 shares of Common Stock held by the Director."}],"balance_after":25755,"source":{"system":"sec-edgar","filing":"0001127602-22-017924","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/7431/000112760222017924/form4.xml","form_type":"4"}},{"id":2654305,"issuer":{"id":3696,"kind":"organization","name":"ARMSTRONG WORLD INDUSTRIES INC","symbol":"AWI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-06-28T20:31:28.000Z","date":"2021-06-25","kind":"grant","acquired":true,"shares":992,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the 2016 Directors Stock Unit Plan, as amended, and as part of the Issuer's nonemployee Director Compensation Program.  The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the one-year anniversary of the grant; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan).  Vested units will be acquirable by the Director, at the election of the Director:  (i) at the vesting of the units at the one-year anniversary of the grant or (ii) at the time of the Director's termination of service."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents an annual grant of restricted stock units as the equity portion of the Director's retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on June 25, 2021, the first business day following the Issuer's Annual Meeting of Shareholders, which price was $105.90."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes vested and unvested units as well as units not yet acquirable by the Director.  Under the terms of the 2008 Directors Stock Unit Plan,  as amended (the \"2008 Plan\"), vested units under the 2008 Plan are not acquirable by the Director until (i) for those restricted stock units granted prior to June 2011, six (6) months following the termination of service on the Issuer's Board of Directors, and, (ii) for those units granted during and after June 2011, at the time of termination of service on the Issuer's Board of Directors.  Under the terms of the 2016 Directors Stock Unit Plan, as amended (the \"2016 Plan\"), vested units under the 2016 Plan are not acquirable by the Director until, at the election of the Director:  (i) the vesting of the units at the one-year anniversary of the grant or (ii) the time of the Director's termination of service.  Also includes 4,229 shares of Common Stock held by the Director."}],"balance_after":24349,"source":{"system":"sec-edgar","filing":"0001127602-21-020744","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/7431/000112760221020744/form4.xml","form_type":"4"}},{"id":2677490,"issuer":{"id":127599,"kind":"organization","name":"Armstrong Flooring, Inc.","symbol":"AFI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-06-08T18:09:07.000Z","date":"2021-06-07","kind":"grant","acquired":true,"shares":18229,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the Issuer's Amended and Restated Armstrong Flooring, Inc. 2016 Directors Stock Unit Plan and as part of the Issuer's Nonemployee Director Compensation Program. Each unit represents the Reporting Person's right to receive one share of the Issuer's Common Stock. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the date of the next annual stockholders meeting; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan). Vested units will be acquirable by the Director, at the election of the Director: (i) on the date of the next annual stockholders meeting or (ii) at the time of the Director's separation from service."},{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted stock units granted under the Issuer's Amended and Restated Armstrong Flooring, Inc. 2016 Directors Stock Unit Plan and as part of the Issuer's Nonemployee Director Compensation Program. Each unit represents the Reporting Person's right to receive one share of the Issuer's Common Stock. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the date of the next annual stockholders meeting; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan). Vested units will be acquirable by the Director, at the election of the Director: (i) on the date of the next annual stockholders meeting or (ii) at the time of the Director's separation from service."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 58,433 vested units that are not yet acquirable by the Director per prior deferral elections by the Director under the terms of the Amended and Restated Armstrong Flooring, Inc. 2016 Directors Stock Unit Plan. Also includes 2,114 shares of the Issuer's Common Stock held by the Director."}],"balance_after":78776,"source":{"system":"sec-edgar","filing":"0001209191-21-039001","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1471798/000120919121039001/doc4.xml","form_type":"4"}},{"id":3097324,"issuer":{"id":3696,"kind":"organization","name":"ARMSTRONG WORLD INDUSTRIES INC","symbol":"AWI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-30T20:08:18.000Z","date":"2020-06-26","kind":"grant","acquired":true,"shares":1465,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the 2016 Directors Stock Unit Plan, as amended, and as part of the Issuer's nonemployee Director Compensation Program. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the one-year anniversary of the grant; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan). Vested units will be acquirable by the Director, at the election of the Director: (i) at the vesting of the units at the one-year anniversary of the grant or (ii) at the time of the Director's termination of service."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents an annual grant of restricted stock units as the equity portion of the Directors retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on June 26, 2020 the first business day following the Issuer's Annual Meeting of Shareholders, which price was $71.70."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes vested and unvested units as well as units not yet acquirable by the Director. Under the terms of the 2008 Directors Stock Unit Plan, as amended (the \"2008 Plan\"), vested units under the 2008 Plan are not acquirable by the Director until (i) for those restricted stock units granted prior to June 2011, six (6) months following the termination of service on the Issuer's Board of Directors, and, (ii) for those units granted during and after June 2011, at the time of termination of service on the Issuer's Board of Directors. Under the terms of the 2016 Directors Stock Unit Plan, as amended (the \"2016 Plan\"), vested units under the 2016 Plan are not acquirable by the Director until, at the election of the Director: (i) the vesting of the units at the one-year anniversary of the grant or (ii) the time of the Director's termination of service. Also includes 4,229 shares of Common Stock held by the Director."}],"balance_after":23357,"source":{"system":"sec-edgar","filing":"0000899243-20-017943","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/7431/000089924320017943/doc4.xml","form_type":"4"}},{"id":3114723,"issuer":{"id":127599,"kind":"organization","name":"Armstrong Flooring, Inc.","symbol":"AFI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-10T11:19:54.000Z","date":"2020-06-08","kind":"grant","acquired":true,"shares":26250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the Issuer's 2016 Directors Stock Unit Plan and as part of the Issuer's nonemployee Director Compensation Program. Each unit represents the Reporting Person's right to receive one share of the Issuer's Common Stock. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the date of the next annual stockholders meeting; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan). Vested units will be acquirable by the Director, at the election of the Director: (i) on the date of the next annual stockholders meeting or (ii) at the time of the Director's separation from service."},{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted stock units granted under the Issuer's 2016 Directors Stock Unit Plan and as part of the Issuer's nonemployee Director Compensation Program. Each unit represents the Reporting Person's right to receive one share of the Issuer's Common Stock. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the date of the next annual stockholders meeting; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan). Vested units will be acquirable by the Director, at the election of the Director: (i) on the date of the next annual stockholders meeting or (ii) at the time of the Director's separation from service."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 32,183 vested units that are not yet acquirable by the Director per prior elections by the Director. Also includes 2,114 shares of the Issuer's Common Stock held by the Director."}],"balance_after":60547,"source":{"system":"sec-edgar","filing":"0001209191-20-035455","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1471798/000120919120035455/doc4.xml","form_type":"4"}},{"id":3461598,"issuer":{"id":3696,"kind":"organization","name":"ARMSTRONG WORLD INDUSTRIES INC","symbol":"AWI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-07-16T21:13:04.000Z","date":"2019-07-12","kind":"grant","acquired":true,"shares":1064,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the 2016 Directors Stock Unit Plan, as amended, and as part of the Issuer's nonemployee Director Compensation Program.  The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the one-year anniversary of the grant; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan).  Vested units will be acquirable by the Director, at the election of the Director: (i) at the vesting of the units at the one-year anniversary of the grant or (ii) at the time of the Director's termination of service."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents an annual grant of restricted stock units as the equity portion of the Directors retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on July 12, 2019 the first business day following the Issuer's Annual Meeting of Shareholders, which price was $98.71."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes vested and unvested units as well as units not yet acquirable by the Director.  Under the terms of the 2008 Directors Stock Unit Plan,  as amended (the \"2008 Plan\"), vested units under the 2008 Plan are not acquirable by the Director until (i) for those restricted stock units granted prior to June 2011, six (6) months following the termination of service on the Issuer's Board of Directors, and, (ii) for those units granted during and after June 2011, at the time of termination of service on the Issuer's Board of Directors.  Under the terms of the 2016 Directors Stock Unit Plan, as amended (the \"2016 Plan\"), vested units under the 2016 Plan are not acquirable by the Director until, at the election of the Director:  (i) the vesting of the units at the one-year anniversary of the grant or (ii) the time of the Director's termination of service.  Also includes 4,229 shares of Common Stock held by the Director."}],"balance_after":21892,"source":{"system":"sec-edgar","filing":"0001127602-19-024654","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/7431/000112760219024654/form4.xml","form_type":"4"}},{"id":3498850,"issuer":{"id":127599,"kind":"organization","name":"Armstrong Flooring, Inc.","symbol":"AFI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-06-06T14:53:37.000Z","date":"2019-06-05","kind":"grant","acquired":true,"shares":9502,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the Issuer's 2016 Directors Stock Unit Plan and as part of the Issuer's nonemployee Director Compensation Program. Each unit represents the Reporting Person's right to receive one share of the Issuer's common shares. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the date of the next annual stockholders meeting; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan). Vested units will be acquirable by the Director, at the election of the Director: (i) on the date of the next annual stockholders meeting or (ii) at the time of the Director's separation from service."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents an annual grant of restricted stock units as the equity portion of the Director's retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on June 5, 2019, the first business day following the annual stockholders meeting, which price was $11.05."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes vested and unvested units as well as units not yet acquirable by the Director. Under the terms of the Issuer's 2016 Directors Stock Unit Plan, vested units under the Plan are not acquirable by the Director until, at the election of the Director: (i) the date of the next annual stockholders meeting or (ii) the time of the Director's separation from service. Also includes 2,114 of the Issuer's common shares held by the Director."}],"balance_after":34297,"source":{"system":"sec-edgar","filing":"0001209191-19-035017","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1471798/000120919119035017/doc4.xml","form_type":"4"}},{"id":3867111,"issuer":{"id":3696,"kind":"organization","name":"ARMSTRONG WORLD INDUSTRIES INC","symbol":"AWI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-07-17T20:28:09.000Z","date":"2018-07-13","kind":"grant","acquired":true,"shares":1558,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the 2016 Directors Stock Unit Plan, as amended, and as part of the Issuer's nonemployee Director Compensation Program.  The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the one-year anniversary of the grant; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan).  Vested units will be acquirable by the Director, at the election of the Director: (i) at the vesting of the units at the one-year anniversary of the grant or (ii) at the time of the Director's termination of service."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents an annual grant of restricted stock units as the equity portion of the Directors retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on July 13, 2018 the first business day following the Issuer's Annual Meeting of Shareholders, which price was $67.40."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes vested and unvested units as well as units not yet acquirable by the Director.  Under the terms of the 2008 Directors Stock Unit Plan, as amended (the \"2008 Plan\"), vested units under the 2008 Plan are not acquirable by the Director until (i) for those restricted stock units granted prior to June 2011, six (6) months following the termination of service on the Issuer's Board of Directors, and, (ii) for those units granted during and after June 2011, at the time of termination of service on the Issuer's Board of Directors.  Under the terms of the 2016 Directors Stock Unit Plan, as amended (the \"2016 Plan\"), vested units under the 2016 Plan are not acquirable by the Director until, at the election of the Director: (i) the vesting of the units at the one-year anniversary of the grant or (ii) the time of the Director's termination of service. Also includes 4,229 shares of Common Stock held by the Director."}],"balance_after":20828,"source":{"system":"sec-edgar","filing":"0001127602-18-023415","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/7431/000112760218023415/form4.xml","form_type":"4"}},{"id":3903313,"issuer":{"id":127599,"kind":"organization","name":"Armstrong Flooring, Inc.","symbol":"AFI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-06-06T16:39:31.000Z","date":"2018-06-04","kind":"grant","acquired":true,"shares":7894,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the Issuer's 2016 Directors Stock Unit Plan and as part of the Issuer's nonemployee Director Compensation Program. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the date of the next annual stockholders meeting; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan). Vested units will be acquirable by the Director, at the election of the Director: (i) on the date of the next annual stockholders meeting or (ii) at the time of the Director's separation from service."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents an annual grant of restricted stock units as the equity portion of the Director's retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on June 4, 2018, the first business day following the annual stockholders meeting, which price was $13.30."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes vested and unvested units as well as units not yet acquirable by the Director. Under the terms of the Issuer's 2016 Directors Stock Unit Plan, vested units under the Plan are not acquirable by the Director until, at the election of the Director: (i) the date of the next annual stockholders meeting or (ii) the time of the Director's separation from service. Also includes 2,115 of the Issuer's common shares held by the Director."}],"balance_after":24796,"source":{"system":"sec-edgar","filing":"0001209191-18-036080","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1471798/000120919118036080/doc4.xml","form_type":"4"}},{"id":4256280,"issuer":{"id":3696,"kind":"organization","name":"ARMSTRONG WORLD INDUSTRIES INC","symbol":"AWI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true}}],"security":"Common Stock","published_at":"2017-07-18T20:34:30.000Z","date":"2017-07-14","kind":"grant","acquired":true,"shares":2298,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted stock units granted under the 2016 Directors Stock Unit Plan, as amended, and as part of the Issuer's nonemployee Director Compensation Program.  The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the one-year anniversary of the grant; (ii) the death or total and permanent disability of the Director; or (iii) the date of any Change in Control Event (as defined in the Plan).  Vested units will be acquirable by the Director, at the election of the Director:  (i) at the vesting of the units at the one-year anniversary of the grant or (ii) at the time of the Director's termination of service."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents an annual grant of restricted stock units as the equity portion of the Directors retainer for Board service under the Issuer's nonemployee Director Compensation Program. The grant date fair value of the units is calculated under the Financial Accounting Standards Board's Accounting Standards Codification Topic 718 using the closing stock price of the Issuer's common shares on July 14, 2017 the first business day following the Issuer's Annual Meeting of Shareholders, which price was $45.70."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes vested and unvested units as well as units not yet acquirable by the Director. Under the terms of the 2008 Directors Stock Unit Plan, as amended (the \"2008 Plan\"), vested units under the 2008 Plan are not acquirable by the Director until (i) for those restricted stock units granted prior to June 2011, six (6) months following the termination of service on the Issuer's Board of Directors, and, (ii) for those units granted during and after June 2011, at the time of termination of service on the Issuer's Board of Directors.  Under the terms of the 2016 Directors Stock Unit Plan, as amended (the \"2016 Plan\"), vested units under the 2016 Plan are not acquirable by the Director until, at the election of the Director: (i) the vesting of the units at the one-year anniversary of the grant or (ii) the time of the Director's termination of service.  Also includes 4,229 shares of Common Stock held by the Director."}],"balance_after":19270,"source":{"system":"sec-edgar","filing":"0001127602-17-023789","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/7431/000112760217023789/form4.xml","form_type":"4"}},{"id":4289771,"issuer":{"id":127599,"kind":"organization","name":"Armstrong Flooring, Inc.","symbol":"AFI"},"owners":[{"id":112170,"kind":"person","name":"Melville James Clinton","position":1,"cik":"0001471798","reported_name":"Melville James Clinton","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-07T16:21:44.000Z","date":"2017-06-05","kind":"grant","acquired":true,"shares":5716,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Consists of unvested units granted on June 5, 2017 under the terms of the 2016 Directors Stock Unit Plan. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the next annual stockholders meeting following the grant (ii) the death or total and permanent disability of the Director, or (iii) the date of any Change in Control (as defined in the Plan). Shares will be issued for vested units within 60 days of (x) the vesting date, or (y) a later deferral date if deferred by the Director under the terms of the Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Consists of unvested units granted on June 5, 2017 under the terms of the 2016 Directors Stock Unit Plan. The units vest (contingent upon the Director's continued service as of such date) on the earlier of (i) the next annual stockholders meeting following the grant (ii) the death or total and permanent disability of the Director, or (iii) the date of any Change in Control (as defined in the Plan). Shares will be issued for vested units within 60 days of (x) the vesting date, or (y) a later deferral date if deferred by the Director under the terms of the Plan."}],"balance_after":16902,"source":{"system":"sec-edgar","filing":"0001209191-17-038295","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1471798/000120919117038295/doc4.xml","form_type":"4"}}]}