GHC

SEC source: 0000950157-25-000853 · form4.xml · derivative · entry 4

O'Shaughnessy Laura · CIK 0001813477 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,500

Underlying: Class B Common Stock · 2,800 shares

Expires not disclosed

F5 · derivative.exercise_price: Shares of Class A Common Stock are convertible into shares of Class B Common Stock at any time on a one-for-one basis and have no expiration date.

F6 · kind: Exchange of Class A shares to be held directly by reporting person for the equivalent number of Class B shares.

F2 · price: N/A

F5 · derivative.exercise_date: Shares of Class A Common Stock are convertible into shares of Class B Common Stock at any time on a one-for-one basis and have no expiration date.

F5 · derivative.expiration_date: Shares of Class A Common Stock are convertible into shares of Class B Common Stock at any time on a one-for-one basis and have no expiration date.

SEC source: 0000950157-25-000853 · form4.xml · nonDerivative · entry 1

O'Shaughnessy Laura · CIK 0001813477 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,733

F1 · kind: Exchange of Class B shares held directly by the reporting person for the equivalent number of Class A shares.

F2 · price: N/A

SEC source: 0001628280-25-043735 · wk-form4_1759436861.xml · nonDerivative · entry 1

WAGONER G RICHARD JR · CIK 0001181664 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 1,488

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0001628280-25-043734 · wk-form4_1759436798.xml · nonDerivative · entry 1

MULCAHY ANNE M · CIK 0001201725 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 692

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0001628280-25-043732 · wk-form4_1759436735.xml · nonDerivative · entry 1

Markell Jack A. · CIK 0001705859 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 25

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0001628280-25-043731 · wk-form4_1759436675.xml · nonDerivative · entry 1

Davis Christopher C · CIK 0001350384 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,541

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0001628280-25-043728 · wk-form4_1759436603.xml · nonDerivative · entry 1

CONLEY DANIELLE Y. · CIK 0001944202 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 401

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000950157-25-000819 · form4.xml · derivative · entry 7

O'Shaughnessy Laura · CIK 0001813477 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 7,582

Underlying: Class B Common Stock · 7,580 shares

Expires 2025-11-12

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.

F5 · derivative.exercise_date: The stock option is fully vested. After this exercise of 7,580 options, the reporting person's spouse has 7,582 vested and exercisable options remaining. The reporting person disclaims beneficial ownership of the reported securities.

F5 · balance_after: The stock option is fully vested. After this exercise of 7,580 options, the reporting person's spouse has 7,582 vested and exercisable options remaining. The reporting person disclaims beneficial ownership of the reported securities.

SEC source: 0000950157-25-000819 · form4.xml · nonDerivative · entry 4

O'Shaughnessy Laura · CIK 0001813477 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 22,739

F2 · shares: The options exercise was executed in anticipation of the November 12, 2025 expiration date on a net settlement basis.

SEC source: 0000950157-25-000819 · form4.xml · nonDerivative · entry 3

O'Shaughnessy Laura · CIK 0001813477 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 29,307

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 · ownership.nature: The reporting person has no voting or investment power with respect to such shares. The reporting person disclaims beneficial ownership of the reported securities.

SEC source: 0000950157-25-000818 · form4.xml · derivative · entry 5

O'Shaughnessy Timothy J · CIK 0001621362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,582

Underlying: Class B Common Stock · 7,580 shares

Expires 2025-11-12

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.

F4 · derivative.exercise_date: The stock option is fully vested. After this exercise of 7,580 options, the reporting person has 7,582 vested and exercisable options remaining.

SEC source: 0000950157-25-000818 · form4.xml · nonDerivative · entry 2

O'Shaughnessy Timothy J · CIK 0001621362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,439

F2 · shares: The options exercise was executed in anticipation of the November 12, 2025 expiration date on a net settlement basis.

SEC source: 0000950157-25-000818 · form4.xml · nonDerivative · entry 1

O'Shaughnessy Timothy J · CIK 0001621362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,007

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 · balance_after: Includes 8 shares of Class B Common Stock held by the reporting person in his Graham Holdings Company 401(k) plan account.

SEC source: 0000950157-25-000702 · form4.xml · derivative · entry 5

O'Shaughnessy Timothy J · CIK 0001621362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,162

Underlying: Class B Common Stock · 7,580 shares

Expires 2025-11-12

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.

F4 · derivative.exercise_date: The stock option is fully vested. After this exercise of 7,580 options, the reporting person has 15,162 vested and exercisable options remaining.

SEC source: 0000950157-25-000702 · form4.xml · nonDerivative · entry 2

O'Shaughnessy Timothy J · CIK 0001621362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,427

F2 · shares: The options exercise was executed in anticipation of the November 12, 2025 expiration date on a net settlement basis.

SEC source: 0000950157-25-000702 · form4.xml · nonDerivative · entry 1

O'Shaughnessy Timothy J · CIK 0001621362 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,305

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 · balance_after: Includes 8 shares of Class B Common Stock held by the reporting person in his Graham Holdings Company 401(k) plan account.

SEC source: 0000950157-25-000701 · form4.xml · derivative · entry 7

O'Shaughnessy Laura · CIK 0001813477 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 15,162

Underlying: Class B Common Stock · 7,580 shares

Expires 2025-11-12

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.

F5 · derivative.exercise_date: The stock option is fully vested. After this exercise of 7,580 options, the reporting person's spouse has 15,162 vested and exercisable options remaining. The reporting person disclaims beneficial ownership of the reported securities.

F5 · balance_after: The stock option is fully vested. After this exercise of 7,580 options, the reporting person's spouse has 15,162 vested and exercisable options remaining. The reporting person disclaims beneficial ownership of the reported securities.

SEC source: 0000950157-25-000701 · form4.xml · nonDerivative · entry 4

O'Shaughnessy Laura · CIK 0001813477 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 21,727

F2 · shares: The options exercise was executed in anticipation of the November 12, 2025 expiration date on a net settlement basis.

SEC source: 0000950157-25-000701 · form4.xml · nonDerivative · entry 3

O'Shaughnessy Laura · CIK 0001813477 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · Spouse

Disclosed balance after: 28,605

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 · ownership.nature: The reporting person has no voting or investment power with respect to such shares. The reporting person disclaims beneficial ownership of the reported securities.

SEC source: 0001655513-25-000003 · wk-form4_1755791298.xml · derivative · entry 3

Maas, Jacob · CIK 0001655513 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class B Common Stock · 2,000 shares

Expires 2025-10-26

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.

F2 · derivative.exercise_date: The stock option is fully vested. After this exercise of 2,000 options, the reporting person has no vested and exercisable options remaining.

F2 · balance_after: The stock option is fully vested. After this exercise of 2,000 options, the reporting person has no vested and exercisable options remaining.

SEC source: 0001655513-25-000003 · wk-form4_1755791298.xml · nonDerivative · entry 2

Maas, Jacob · CIK 0001655513 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,535

F1 · shares: The options exercise was executed in anticipation of the October 26, 2025 expiration date on a net settlement basis.

SEC source: 0001655513-25-000003 · wk-form4_1755791298.xml · nonDerivative · entry 1

Maas, Jacob · CIK 0001655513 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,287

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.

SEC source: 0001628280-26-016549 · wk-form4_1773177699.xml · nonDerivative · entry 1

Allen Tony · CIK 0001847222 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8

F1 · date: This Form 4 is being filed late due to an administrative error.

SEC source: 0000104889-25-000059 · wk-form4_1751478144.xml · nonDerivative · entry 1

MULCAHY ANNE M · CIK 0001201725 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 671

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000058 · wk-form4_1751478060.xml · nonDerivative · entry 1

CONLEY DANIELLE Y. · CIK 0001944202 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 382

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000057 · wk-form4_1751477957.xml · nonDerivative · entry 1

WAGONER G RICHARD JR · CIK 0001181664 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 1,467

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000056 · wk-form4_1751477874.xml · nonDerivative · entry 1

Davis Christopher C · CIK 0001350384 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,518

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000055 · wk-form4_1751477779.xml · nonDerivative · entry 1

Markell Jack A. · CIK 0001705859 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 18

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000028 · wk-form4_1743711664.xml · nonDerivative · entry 1

Markell Jack A. · CIK 0001705859 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 9

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000026 · wk-form4_1743711556.xml · nonDerivative · entry 1

Davis Christopher C · CIK 0001350384 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,490

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000027 · wk-form4_1743711607.xml · nonDerivative · entry 1

MULCAHY ANNE M · CIK 0001201725 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 645

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000024 · wk-form4_1743711435.xml · nonDerivative · entry 1

WAGONER G RICHARD JR · CIK 0001181664 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 1,441

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000025 · wk-form4_1743711500.xml · nonDerivative · entry 1

CONLEY DANIELLE Y. · CIK 0001944202 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 359

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000012 · wk-form4_1738185699.xml · nonDerivative · entry 2

Maas, Jacob · CIK 0001655513 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,287

F4 · shares: Represents withholding of Class B shares for the tax liability associated with the vesting and settlement of the restricted stock unit award referred to in footnote 1 above.

SEC source: 0000104889-25-000012 · wk-form4_1738185699.xml · nonDerivative · entry 1

Maas, Jacob · CIK 0001655513 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,725

F1 · security: On January 19, 2022, the reporting person received a restricted stock unit award (Award) with price-based vesting conditions. The terms of the Award provide that 1,000 shares vest if the issuer's Class B Common Stock's closing price meets or exceeds $700 for 90 consecutive calendar days on or before December 31, 2027, with an additional 1,000 shares vesting following each additional incremental increase of $100 in the closing price of the issuer's Class B Common Stock maintained for 90 consecutive days on or before December 31, 2027. On November 5, 2024, the first 1,000 shares vested following achievement of the first stock price goal. On January 27, 2025, the second 1,000 shares vested following achievement of the second stock price goal.

F2 · kind: Represents the third tranche of the Award, which will vest if the closing price of the issuer's Class B Common Stock exceeds $900 for 90 consecutive calendar days on or before December 31, 2027. As noted above, if such price-based vesting condition is satisfied, the reporting person is eligible for vesting of additional 1,000 share increments of Class B Common Stock for each additional $100 increase in the closing price of the issuer's Class B Common Stock maintained for 90 consecutive days on or before December 31, 2027 (e.g., if the closing price of the issuer's Class B Common Stock exceeds $1,000 for 90 consecutive calendar days, then 1,000 additional shares of Class B Common stock will vest).

F2 · shares: Represents the third tranche of the Award, which will vest if the closing price of the issuer's Class B Common Stock exceeds $900 for 90 consecutive calendar days on or before December 31, 2027. As noted above, if such price-based vesting condition is satisfied, the reporting person is eligible for vesting of additional 1,000 share increments of Class B Common Stock for each additional $100 increase in the closing price of the issuer's Class B Common Stock maintained for 90 consecutive days on or before December 31, 2027 (e.g., if the closing price of the issuer's Class B Common Stock exceeds $1,000 for 90 consecutive calendar days, then 1,000 additional shares of Class B Common stock will vest).

F3 · price: N/A

SEC source: 0000104889-25-000005 · wk-form4_1736198288.xml · nonDerivative · entry 3

Snyman Marcel A. · CIK 0001728606 · VP-Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 442

F4 · kind: This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 23, 2024.

SEC source: 0000104889-25-000010 · wk-form4_1736198729.xml · nonDerivative · entry 2

Cooney Wallace R. · CIK 0001443594 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,524

F3 · shares: Represents withholding of Class B shares for the tax liability associated with the vesting and settlement of restricted stock previously awarded under incentive plan on January 4, 2021.

SEC source: 0000104889-25-000010 · wk-form4_1736198729.xml · nonDerivative · entry 1

Cooney Wallace R. · CIK 0001443594 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,746

F1 · kind: Class B shares awarded as restricted stock under incentive plan

F2 · price: N/A

SEC source: 0000104889-25-000009 · wk-form4_1736198654.xml · nonDerivative · entry 2

Maas, Jacob · CIK 0001655513 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,725

F3 · shares: Represents withholding of Class B shares for the tax liability associated with the vesting and settlement of restricted stock previously awarded under incentive plan on January 4, 2021.

SEC source: 0000104889-25-000009 · wk-form4_1736198654.xml · nonDerivative · entry 1

Maas, Jacob · CIK 0001655513 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,982

F1 · kind: Class B shares awarded as restricted stock under incentive plan

F2 · price: N/A

SEC source: 0000104889-25-000008 · wk-form4_1736198584.xml · nonDerivative · entry 1

Maddrey Nicole Marie · CIK 0001638300 · Sr. VP-GC & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,223

F1 · kind: Class B shares awarded as restricted stock under incentive plan

F2 · price: N/A

SEC source: 0000104889-25-000007 · wk-form4_1736198506.xml · nonDerivative · entry 1

Rosen Andrew Stephen · CIK 0001605148 · Executive Vice President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,773

F1 · kind: Class B shares awarded as restricted stock under incentive plan

F2 · price: N/A

SEC source: 0000104889-25-000006 · wk-form4_1736198424.xml · nonDerivative · entry 2

Stonesifer Sandra M. · CIK 0001839293 · VP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,322

F3 · shares: Represents withholding of Class B shares for the tax liability associated with the vesting and settlement of restricted stock previously awarded under incentive plan on January 4, 2021.

SEC source: 0000104889-25-000006 · wk-form4_1736198424.xml · nonDerivative · entry 1

Stonesifer Sandra M. · CIK 0001839293 · VP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,543

F1 · kind: Class B shares awarded as restricted stock under incentive plan

F2 · price: N/A

SEC source: 0000104889-25-000005 · wk-form4_1736198288.xml · nonDerivative · entry 2

Snyman Marcel A. · CIK 0001728606 · VP-Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 601

F3 · shares: Represents withholding of Class B shares for the tax liability associated with the vesting and settlement of restricted stock previously awarded under incentive plan on January 4, 2021.

SEC source: 0000104889-25-000005 · wk-form4_1736198288.xml · nonDerivative · entry 1

Snyman Marcel A. · CIK 0001728606 · VP-Chief Accounting Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 685

F1 · shares: Class B shares awarded as restricted stock under incentive plan.

F2 · price: N/A

SEC source: 0000104889-25-000004 · wk-form4_1736183405.xml · nonDerivative · entry 1

WAGONER G RICHARD JR · CIK 0001181664 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 1,416

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000003 · wk-form4_1736183316.xml · nonDerivative · entry 1

MULCAHY ANNE M · CIK 0001201725 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 620

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000002 · wk-form4_1736183208.xml · nonDerivative · entry 1

Davis Christopher C · CIK 0001350384 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,462

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.

SEC source: 0000104889-25-000001 · wk-form4_1736183107.xml · nonDerivative · entry 1

CONLEY DANIELLE Y. · CIK 0001944202 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Revocable Trust

Disclosed balance after: 336

F1 · kind: Securities acquired pursuant to the Director's election under the Director Share Purchase Program to receive a portion of the fees received for service as a director in stock in lieu of cash.