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Long-Term Incentive Plan (the \"LTIP\"). Except as otherwise provided in the LTIP or the award agreement governing the award, the common units will vest in three equal installments on each of January 7, 2019, January 7, 2020, and January 7, 2021, so long as the Reporting Person remains continuously employed by the Issuer, Black Stone Minerals GP, L.L.C. (the \"General Partner\"), or any of their respective affiliates through each such vesting date."}],"balance_after":292958,"source":{"system":"sec-edgar","filing":"0001209191-18-012625","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919118012625/doc4.xml","form_type":"4"}},{"id":4101814,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2018-01-11T00:20:29.000Z","date":"2018-01-09","kind":"sale","acquired":false,"shares":29402,"price":18.2948,"value":537903.7096,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 5, 2017."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $18.18 to $18.61, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote."}],"balance_after":245605,"source":{"system":"sec-edgar","filing":"0001209191-18-003182","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919118003182/doc4.xml","form_type":"4"}},{"id":4101813,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2018-01-11T00:20:29.000Z","date":"2018-01-08","kind":"tax_withholding","acquired":false,"shares":11532,"price":18.37,"value":211842.84,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on January 5, 2018."}],"balance_after":275007,"source":{"system":"sec-edgar","filing":"0001209191-18-003182","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919118003182/doc4.xml","form_type":"4"}},{"id":4359745,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2017-04-04T21:51:01.000Z","date":"2017-04-03","kind":"sale","acquired":false,"shares":18000,"price":16.3271,"value":293887.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 3, 2017."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $16.12 to $16.77, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote."}],"balance_after":286539,"source":{"system":"sec-edgar","filing":"0001209191-17-025196","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117025196/doc4.xml","form_type":"4"}},{"id":4379090,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Subordinated units representing limited partner interests","published_at":"2017-03-17T22:38:04.000Z","date":"2017-03-15","kind":"tax_withholding","acquired":false,"shares":3683,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each subordinated unit will convert into one common unit representing a limited partner interest in the Issuer at the end of the subordination period described in the Issuer's Registration Statement on Form S-1 (File No. 333-202875)."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"For tax withholding purposes, the value of the subordinated units was fixed at a discount to the closing price of BSM common units on March 15, 2017."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each subordinated unit will convert into one common unit representing a limited partner interest in the Issuer at the end of the subordination period described in the Issuer's Registration Statement on Form S-1 (File No. 333-202875)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each subordinated unit will convert into one common unit representing a limited partner interest in the Issuer at the end of the subordination period described in the Issuer's Registration Statement on Form S-1 (File No. 333-202875)."}],"balance_after":41255,"derivative":{"underlying":"Common units representing limited partner interests","underlying_shares":3683},"source":{"system":"sec-edgar","filing":"0001209191-17-021550","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117021550/doc4.xml","form_type":"4"}},{"id":4379089,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2017-03-17T22:38:04.000Z","date":"2017-03-15","kind":"tax_withholding","acquired":false,"shares":17294,"price":17.19,"value":297283.86,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on March 15, 2017."}],"balance_after":304539,"source":{"system":"sec-edgar","filing":"0001209191-17-021550","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117021550/doc4.xml","form_type":"4"}},{"id":4399820,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2017-03-06T23:23:01.000Z","date":"2017-03-02","kind":"tax_withholding","acquired":false,"shares":27693,"price":17.5,"value":484627.5,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents settlement of performance units awarded under the Issuer's Long-Term Incentive Plan. 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For tax withholding purposes, the value of the common units was deemed to be equal to the closing price of BSM common units on March 2, 2017."}],"balance_after":349526,"source":{"system":"sec-edgar","filing":"0001209191-17-018479","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117018479/doc4.xml","form_type":"4"}},{"id":4435220,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2017-02-21T23:30:34.000Z","date":"2017-02-16","kind":"grant","acquired":true,"shares":47248,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Common units subject to a restricted unit award issued pursuant to the Black Stone Minerals, L.P. 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These common units were sold in multiple transactions at prices ranging from $18.41 to $18.78, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote."}],"balance_after":229532,"source":{"system":"sec-edgar","filing":"0001209191-17-005406","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117005406/doc4.xml","form_type":"4"}},{"id":4484967,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2017-01-20T22:26:15.000Z","date":"2017-01-20","kind":"sale","acquired":false,"shares":1200,"price":18.8439,"value":22612.68,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 29, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $18.79 to $18.91, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote."}],"balance_after":231626,"source":{"system":"sec-edgar","filing":"0001209191-17-004951","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117004951/doc4.xml","form_type":"4"}},{"id":4484966,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2017-01-20T22:26:15.000Z","date":"2017-01-19","kind":"sale","acquired":false,"shares":1700,"price":18.8095,"value":31976.15,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 29, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $18.71 to $18.86, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote."}],"balance_after":232826,"source":{"system":"sec-edgar","filing":"0001209191-17-004951","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117004951/doc4.xml","form_type":"4"}},{"id":4484965,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2017-01-20T22:26:15.000Z","date":"2017-01-18","kind":"sale","acquired":false,"shares":1900,"price":18.6674,"value":35468.06,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 29, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $18.61 to $18.70, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote."}],"balance_after":234526,"source":{"system":"sec-edgar","filing":"0001209191-17-004951","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117004951/doc4.xml","form_type":"4"}},{"id":4489711,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2017-01-18T00:51:23.000Z","date":"2017-01-17","kind":"sale","acquired":false,"shares":5100,"price":18.782,"value":95788.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 29, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $18.66 to $18.95, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote."}],"balance_after":236426,"source":{"system":"sec-edgar","filing":"0001209191-17-003980","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117003980/doc4.xml","form_type":"4"}},{"id":4489710,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2017-01-18T00:51:23.000Z","date":"2017-01-13","kind":"sale","acquired":false,"shares":3300,"price":18.8269,"value":62128.77,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 29, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $18.75 to $19.05, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote."}],"balance_after":241526,"source":{"system":"sec-edgar","filing":"0001209191-17-003980","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117003980/doc4.xml","form_type":"4"}},{"id":4489709,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing limited partner interests","published_at":"2017-01-18T00:51:23.000Z","date":"2017-01-12","kind":"sale","acquired":false,"shares":5614,"price":18.9046,"value":106130.4244,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 29, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $18.68 to $19.06, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote."}],"balance_after":244826,"source":{"system":"sec-edgar","filing":"0001209191-17-003980","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1621434/000120919117003980/doc4.xml","form_type":"4"}},{"id":4493759,"issuer":{"id":4198,"kind":"organization","name":"Black Stone Minerals, L.P.","symbol":"BSM"},"owners":[{"id":152455,"kind":"person","name":"Morris Brock","position":1,"cik":"0001623070","reported_name":"Morris Brock","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Engineering and Geology"}}],"security":"Common units representing 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