WRB

SEC source: 0001062993-22-014908 · form4.xml · nonDerivative · entry 1

Talisman Jonathan · CIK 0001794251 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,197

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.

F2 · balance_after: On March 23, 2022, the Company's common stock split on a 3-for-2 basis resulting in an increase of 3,067 shares of common stock beneficially owned by the reporting person.

SEC source: 0001062993-22-014906 · form4.xml · nonDerivative · entry 1

Ferre Maria Luisa · CIK 0001289698 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,566

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.

F2 · balance_after: On March 23, 2022, the Company's common stock split on a 3-for-2 basis resulting in an increase of 8,857 shares of common stock beneficially owned by the reporting person.

SEC source: 0001062993-22-014907 · form4.xml · nonDerivative · entry 1

SHAPIRO MARK L · CIK 0001235090 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,995

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.

SEC source: 0001062993-22-014905 · form4.xml · nonDerivative · entry 1

Farrell Mary C · CIK 0001355414 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,995

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.

SEC source: 0001062993-22-014904 · form4.xml · nonDerivative · entry 1

BROCKBANK MARK ELLWOOD · CIK 0001068341 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,191

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.

F2 · balance_after: On March 23, 2022, the Company's common stock split on a 3-for-2 basis resulting in an increase of 28,732 shares of common stock beneficially owned by the reporting person.

SEC source: 0001062993-22-014902 · form4.xml · nonDerivative · entry 1

BLAYLOCK RONALD E · CIK 0001214686 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,404

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.

F2 · balance_after: On March 23, 2022, the Company's common stock split on a 3-for-2 basis resulting in an increase of 22,803 shares of common stock beneficially owned by the reporting person.

SEC source: 0001062993-22-014901 · form4.xml · nonDerivative · entry 1

Augostini Christopher L · CIK 0001550828 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 63,316

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.

F2 · balance_after: On March 23, 2022, the Company's common stock split on a 3-for-2 basis resulting in an increase of 20,107 shares of common stock beneficially owned by the reporting person.

SEC source: 0001062993-22-014900 · form4.xml · nonDerivative · entry 1

BERKLEY WILLIAM R JR · CIK 0001236253 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,698,002

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.

F2 · balance_after: Includes 1,791,511 shares of common stock underlying vested Restricted Stock Units ("RSUs") (the receipt of which has been deferred) and does not include shares of common stock underlying unvested performance-based RSUs. On March 23, 2022, the Company's common stock split on a 3-for-2 basis ("Stock Split"), resulting in an increase of 898,337 shares of common stock directly owned by the reporting person, including 597,172 shares underlying vested RSUs.

SEC source: 0001062993-22-014899 · form4.xml · nonDerivative · entry 1

BERKLEY WILLIAM R · CIK 0000918186 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,237,042

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.

F2 · balance_after: Includes 4,748,649 shares of common stock underlying vested Restricted Stock Units ("RSUs") (the receipt of which has been deferred) and does not include shares of common stock underlying unvested performance-based RSUs. On March 23, 2022, the Company's common stock split on a 3-for-2 basis ("Stock Split"), resulting in an increase of 3,744,684 shares of common stock directly owned by the reporting person, including 1,582,885 shares underlying vested RSUs.

SEC source: 0001062993-22-019549 · form4.xml · nonDerivative · entry 1

Farrell Mary C · CIK 0001355414 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By IRA

Disclosed balance after: 253

F1 · shares: Adjusted to reflect the Company's common stock split on a 3-for-2 basis which occurred on March 23, 2022.

F1 · price: Adjusted to reflect the Company's common stock split on a 3-for-2 basis which occurred on March 23, 2022.

SEC source: 0001062993-21-013511 · form4.xml · nonDerivative · entry 1

BROCKBANK MARK ELLWOOD · CIK 0001068341 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Corporation

Disclosed balance after: 802,659

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.25 to $80.44, inclusive. The reporting person undertakes to provide to Issuer, any security holder of Issuer, or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price in the ranges set forth in this Footnote to this Form 4.

SEC source: 0001062993-22-003799 · form5.xml · nonDerivative · entry 1

Talisman Jonathan · CIK 0001794251 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By DRP

Disclosed balance after: 372

SEC source: 0001062993-21-012212 · form4.xml · derivative · entry 4

BROCKBANK MARK ELLWOOD · CIK 0001068341 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 38,301 shares

Expires 2021-12-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

F1 · price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

SEC source: 0001062993-21-012212 · form4.xml · nonDerivative · entry 2

BROCKBANK MARK ELLWOOD · CIK 0001068341 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,464

SEC source: 0001062993-21-012212 · form4.xml · nonDerivative · entry 1

BROCKBANK MARK ELLWOOD · CIK 0001068341 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 95,765

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

SEC source: 0001062993-21-012211 · form4.xml · derivative · entry 3

Pusey Leigh Ann · CIK 0001708919 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,547 shares

Expires 2021-12-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

F1 · price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

SEC source: 0001062993-21-012211 · form4.xml · nonDerivative · entry 2

Pusey Leigh Ann · CIK 0001708919 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,214

SEC source: 0001062993-21-012211 · form4.xml · nonDerivative · entry 1

Pusey Leigh Ann · CIK 0001708919 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,761

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

SEC source: 0001062993-21-012210 · form4.xml · derivative · entry 4

SHAPIRO MARK L · CIK 0001235090 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,768 shares

Expires 2021-12-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

F1 · price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

SEC source: 0001062993-21-012210 · form4.xml · nonDerivative · entry 2

SHAPIRO MARK L · CIK 0001235090 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

SEC source: 0001062993-21-012210 · form4.xml · nonDerivative · entry 1

SHAPIRO MARK L · CIK 0001235090 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,768

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

SEC source: 0001062993-21-012209 · form4.xml · derivative · entry 3

Talisman Jonathan · CIK 0001794251 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 681 shares

Expires 2021-12-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

F1 · price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

SEC source: 0001062993-21-012209 · form4.xml · nonDerivative · entry 2

Talisman Jonathan · CIK 0001794251 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,501

SEC source: 0001062993-21-012209 · form4.xml · nonDerivative · entry 1

Talisman Jonathan · CIK 0001794251 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,182

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

SEC source: 0001062993-21-012208 · form4.xml · derivative · entry 3

Augostini Christopher L · CIK 0001550828 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 6,708 shares

Expires 2021-12-01

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled in cash as of December 1, 2021.

F1 · price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled in cash as of December 1, 2021.

SEC source: 0001062993-21-012208 · form4.xml · nonDerivative · entry 2

Augostini Christopher L · CIK 0001550828 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,214

SEC source: 0001062993-21-012208 · form4.xml · nonDerivative · entry 1

Augostini Christopher L · CIK 0001550828 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,922

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled in cash as of December 1, 2021.

SEC source: 0000011544-21-000071 · edgar.xml · nonDerivative · entry 2

Sgaglione Lucille T · CIK 0001491845 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,276

F2 · shares: Represents payment of tax liability by withholding securities incident to the vesting of restricted stock units ("RSUs").

F3 · balance_after: Represents shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred); and does not include unvested shares of common stock underlying performance-based RSUs.

SEC source: 0000011544-21-000071 · edgar.xml · nonDerivative · entry 1

Sgaglione Lucille T · CIK 0001491845 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,527

F1 · shares: Represents the vesting of tranches of performance-based restricted stock units ("RSUs") granted in 2017 and 2018 under the W. R. Berkley Corporation 2018 Stock Incentive Plan (or its predecessor plan) for the three-year performance period ending June 30, 2022 (3,805 shares) and June 30, 2023 (3,421 shares).

SEC source: 0000011544-21-000070 · edgar.xml · nonDerivative · entry 2

Baio Richard Mark · CIK 0001463038 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,393

F2 · shares: Represents payment of tax liability by withholding securities incident to the vesting of performance-based RSUs.

F3 · balance_after: Includes 64,393 shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred) and does not include unvested shares of common stock underlying performance-based RSUs.

SEC source: 0000011544-21-000070 · edgar.xml · nonDerivative · entry 1

Baio Richard Mark · CIK 0001463038 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 64,595

F1 · shares: Represents the vesting of tranches of performance-based restricted stock units ("RSUs") granted in 2017 and 2018 under the W. R. Berkley Corporation 2018 Stock Incentive Plan (or its predecessor plan) for the three-year performance period ending June 30, 2022 (2,603 shares) and June 30, 2023 (2,881 shares).

SEC source: 0000011544-21-000069 · edgar.xml · nonDerivative · entry 1

Welt Philip S · CIK 0001764818 · EVP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 67,586

F1 · shares: Represents payment of tax liability by withholding securities incident to the vesting of restricted stock units ("RSUs").

F2 · balance_after: Includes shares of common stock underlying RSUs, the receipt of 28,456 which have been deferred; 2,185 of which are scheduled to vest on August 15, 2022; 3,930 of which are scheduled to vest in two equal installments on August 15, 2022 and August 15, 2023; and does not include shares of common stock underlying unvested performance-based RSUs.

SEC source: 0000011544-21-000068 · edgar.xml · nonDerivative · entry 2

SHIEL JAMES G · CIK 0001236251 · EVP - Investments

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 416,170

F2 · shares: Represents payment of tax liability by withholding securities incident to the vesting of performance-based RSUs.

F3 · balance_after: Includes 255,763 shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred) and does not include unvested shares of common stock underlying performance-based RSUs.

SEC source: 0000011544-21-000068 · edgar.xml · nonDerivative · entry 1

SHIEL JAMES G · CIK 0001236251 · EVP - Investments

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 416,516

F1 · shares: Represents the vesting of tranches of performance-based restricted stock units ("RSUs") granted in 2017 and 2018 under the W. R. Berkley Corporation 2018 Stock Incentive Plan (or its predecessor plan) for the three-year performance period ending June 30, 2022 (3,805 shares) and June 30, 2023 (3,421 shares).

SEC source: 0000011544-21-000067 · edgar.xml · nonDerivative · entry 2

BERKLEY WILLIAM R JR · CIK 0001236253 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,796,670

F2 · shares: Represents payment of tax liability by withholding securities incident to the vesting of performance-based RSUs.

F3 · balance_after: Includes 1,194,339 shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred) and does not include unvested shares of common stock underlying performance-based RSUs.

SEC source: 0000011544-21-000067 · edgar.xml · nonDerivative · entry 1

BERKLEY WILLIAM R JR · CIK 0001236253 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,798,746

F1 · shares: Represents the vesting of tranches of performance-based restricted stock units ("RSUs") granted in 2017 and 2018 under the W. R. Berkley Corporation 2018 Stock Incentive Plan (or its predecessor plan) for the three-year performance period ending June 30, 2022 (26,029 shares) and June 30, 2023 (23,409 shares).

SEC source: 0000011544-21-000066 · edgar.xml · nonDerivative · entry 2

BERKLEY WILLIAM R · CIK 0000918186 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,489,363

F2 · shares: Represents payment of tax liability by withholding securities incident to the vesting of performance-based RSUs.

F3 · balance_after: Includes 3,165,764 shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred) and does not include unvested shares of common stock underlying performance-based RSUs.

SEC source: 0000011544-21-000066 · edgar.xml · nonDerivative · entry 1

BERKLEY WILLIAM R · CIK 0000918186 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,491,250

F1 · shares: Represents the vesting of tranches of performance-based restricted stock units ("RSUs") granted in 2017 and 2018 under the W. R. Berkley Corporation 2018 Stock Incentive Plan (or its predecessor plan) for the three-year performance period ending June 30, 2022 (26,029 shares) and June 30, 2023 (23,409 shares).

SEC source: 0000011544-21-000059 · edgar.xml · nonDerivative · entry 1

Welt Philip S · CIK 0001764818 · EVP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 67,724

F1 · shares: Represents payment of tax liability by withholding securities incident to the vesting of restricted stock units ("RSUs").

F2 · balance_after: Includes shares of common stock underlying RSUs, the receipt of 24,445 which have been deferred; 4,370 of which are scheduled to vest in two equal installments on August 15, 2021 and August 15, 2022; 5,894 of which are scheduled to vest in three equal installments on August 15, 2021, August 15, 2022 and August 15, 2023; and does not include shares of common stock underlying unvested performance-based RSUs.

SEC source: 0000011544-21-000058 · edgar.xml · nonDerivative · entry 2

SHIEL JAMES G · CIK 0001236251 · EVP - Investments

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 409,290

F2 · shares: Represents payment of tax liability by withholding securities incident to the vesting of performance-based RSUs.

F3 · balance_after: Includes 248,883 shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred) and does not include unvested shares of common stock underlying performance-based RSUs.

SEC source: 0000011544-21-000058 · edgar.xml · nonDerivative · entry 1

SHIEL JAMES G · CIK 0001236251 · EVP - Investments

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 409,503

F1 · shares: Represents the vesting of a tranche of performance-based restricted stock units ("RSUs") granted in 2016 under the W. R. Berkley Corporation 2018 Stock Incentive Plan (or its predecessor plan) for the three-year performance period ending June 30, 2021.

SEC source: 0000011544-21-000057 · edgar.xml · nonDerivative · entry 1

Sgaglione Lucille T · CIK 0001491845 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,301

F1 · shares: Represents payment of tax liability by withholding securities incident to the vesting of restricted stock units ("RSUs").

F2 · balance_after: Represents shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred); and does not include unvested shares of common stock underlying performance-based RSUs.

SEC source: 0000011544-21-000056 · edgar.xml · nonDerivative · entry 2

Baio Richard Mark · CIK 0001463038 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,111

F2 · shares: Represents payment of tax liability by withholding securities incident to the vesting of performance-based RSUs.

F3 · balance_after: Represents shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred) and does not include unvested shares of common stock underlying performance-based RSUs.

SEC source: 0000011544-21-000056 · edgar.xml · nonDerivative · entry 1

Baio Richard Mark · CIK 0001463038 · EVP & CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,215

F1 · shares: Represents the vesting of a tranche of performance-based restricted stock units ("RSUs") granted in 2016 under the W. R. Berkley Corporation 2018 Stock Incentive Plan (or its predecessor plan) for the three-year performance period ending June 30, 2021.

SEC source: 0000011544-21-000055 · edgar.xml · nonDerivative · entry 2

BERKLEY WILLIAM R JR · CIK 0001236253 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,749,308

F2 · shares: Represents payment of tax liability by withholding securities incident to the vesting of performance-based RSUs.

F3 · balance_after: Includes 1,146,977 shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred) and does not include unvested shares of common stock underlying performance-based RSUs.

SEC source: 0000011544-21-000055 · edgar.xml · nonDerivative · entry 1

BERKLEY WILLIAM R JR · CIK 0001236253 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,750,589

F1 · shares: Represents the vesting of a tranche of performance-based restricted stock units ("RSUs") granted in 2016 under the W. R. Berkley Corporation 2018 Stock Incentive Plan (or its predecessor plan) for the three-year performance period ending June 30, 2021.

SEC source: 0000011544-21-000054 · edgar.xml · nonDerivative · entry 2

BERKLEY WILLIAM R · CIK 0000918186 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,441,812

F2 · shares: Represents payment of tax liability by withholding securities incident to the vesting of performance-based RSUs.

F3 · balance_after: Includes 3,118,213 shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred) and does not include unvested shares of common stock underlying performance-based RSUs.

SEC source: 0000011544-21-000054 · edgar.xml · nonDerivative · entry 1

BERKLEY WILLIAM R · CIK 0000918186 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,442,976

F1 · shares: Represents the vesting of a tranche of performance-based restricted stock units ("RSUs") granted in 2016 under the W. R. Berkley Corporation 2018 Stock Incentive Plan (or its predecessor plan) for the three-year performance period ending June 30, 2021.

SEC source: 0000011544-21-000038 · edgar.xml · nonDerivative · entry 1

SHAPIRO MARK L · CIK 0001235090 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,652

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.

SEC source: 0000011544-21-000037 · edgar.xml · nonDerivative · entry 1

Talisman Jonathan · CIK 0001794251 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,494

F1 · shares: Represents award granted pursuant to the terms of the W. R. Berkley Corporation 2009 Directors Stock Plan, as amended and restated.