LGND

SEC source: 0002001011-26-000108 · edgardoc.xml · nonDerivative · entry 2

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 46,514

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 · shares: The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.

SEC source: 0002001011-26-000108 · edgardoc.xml · nonDerivative · entry 1

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 41,514

F1 · kind: These shares were acquired under the Ligand Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c).

SEC source: 0002001011-26-000107 · edgardoc.xml · nonDerivative · entry 1

Espinoza Octavio · CIK 0001905248 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,696

F1 · kind: These shares were acquired under the Ligand Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c).

SEC source: 0002001011-26-000106 · edgardoc.xml · nonDerivative · entry 1

Davis Todd C · CIK 0001392029 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 199,513

F1 · kind: These shares were acquired under the Ligand Employee Stock Purchase Plan in transactions that were exempt under both Rule 16b-3(d) and Rule 16b-3(c).

SEC source: 0001104659-26-075456 · tm2618247-1_4seq1.xml · derivative · entry 3

Sabba Stephen L · CIK 0001442372 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,145 shares

Expires 2027-05-25

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 · security: These securities, as represented in Column 5, were acquired by a grant of 2,456 shares approved by the Board of Directors of the Company at the 2017 Meeting, as previously reported on the Reporting Person's Form 4, dated 30 May 2017. That grant vested in full on the first anniversary of the grant date or immediately (x) upon a change in control or a hostile takeover of the Company or (y) the death or permanent disability of the grantee if still serving at that time. The original grant was adjusted to 2,145 shares and the exercise price adjusted to $66.13 pursuant to the OmniAb Inc. separation from the Company.

F2 · derivative.exercise_date: These securities, as represented in Column 5, were acquired by a grant of 2,456 shares approved by the Board of Directors of the Company at the 2017 Meeting, as previously reported on the Reporting Person's Form 4, dated 30 May 2017. That grant vested in full on the first anniversary of the grant date or immediately (x) upon a change in control or a hostile takeover of the Company or (y) the death or permanent disability of the grantee if still serving at that time. The original grant was adjusted to 2,145 shares and the exercise price adjusted to $66.13 pursuant to the OmniAb Inc. separation from the Company.

SEC source: 0001104659-26-075456 · tm2618247-1_4seq1.xml · nonDerivative · entry 2

Sabba Stephen L · CIK 0001442372 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,629

F1 · security: These securities, as represented in Column 5, include the grant of 836 restricted shares approved by the Board of Directors of the Company at the 2026 Meeting held 5 June 2026, which shares were previously reported on a Form 4 for this Reporting Person dated 9 June 2026.

SEC source: 0001104659-26-075456 · tm2618247-1_4seq1.xml · nonDerivative · entry 1

Sabba Stephen L · CIK 0001442372 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,774

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 · security: These securities, as represented in Column 5, include the grant of 836 restricted shares approved by the Board of Directors of the Company at the 2026 Meeting held 5 June 2026, which shares were previously reported on a Form 4 for this Reporting Person dated 9 June 2026.

SEC source: 0002001011-26-000104 · edgardoc.xml · derivative · entry 6

Haas Jason · CIK 0001883821 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,138

Underlying: Common Stock · 1,000 shares

Expires 2032-06-29

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.

F3 · derivative.exercise_date: This Option was previously reported as a Grant of 5,907 shares on June 29, 2022, at an exercise price of $88.48 per share, which becomes exercisable in three successive annual installments upon completion of each calendar year of service beginning on the grant date, but was adjusted pursuant to the OmniAb Inc. separation from the issuer.

SEC source: 0002001011-26-000104 · edgardoc.xml · derivative · entry 5

Haas Jason · CIK 0001883821 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,138

Underlying: Common Stock · 3,000 shares

Expires 2032-06-29

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.

F3 · derivative.exercise_date: This Option was previously reported as a Grant of 5,907 shares on June 29, 2022, at an exercise price of $88.48 per share, which becomes exercisable in three successive annual installments upon completion of each calendar year of service beginning on the grant date, but was adjusted pursuant to the OmniAb Inc. separation from the issuer.

SEC source: 0002001011-26-000104 · edgardoc.xml · nonDerivative · entry 4

Haas Jason · CIK 0001883821 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,981

F2 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $256.0000 to $256.5100. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000104 · edgardoc.xml · nonDerivative · entry 3

Haas Jason · CIK 0001883821 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,442

F1 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $255.0000 to $255.2900. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000104 · edgardoc.xml · nonDerivative · entry 2

Haas Jason · CIK 0001883821 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,442

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: 0002001011-26-000104 · edgardoc.xml · nonDerivative · entry 1

Haas Jason · CIK 0001883821 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,442

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: 0002001011-26-000103 · edgardoc.xml · nonDerivative · entry 3

Aryeh Jason · CIK 0001376960 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,580

SEC source: 0002001011-26-000103 · edgardoc.xml · nonDerivative · entry 2

Aryeh Jason · CIK 0001376960 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 107,080

SEC source: 0002001011-26-000102 · edgardoc.xml · nonDerivative · entry 4

LAMATTINA JOHN L · CIK 0001216074 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,969

F4 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $250.9100 to $251.8950. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000102 · edgardoc.xml · nonDerivative · entry 3

LAMATTINA JOHN L · CIK 0001216074 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,374

F3 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $249.3400 to $250.2700. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000102 · edgardoc.xml · nonDerivative · entry 2

LAMATTINA JOHN L · CIK 0001216074 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,071

F2 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $247.9400 to $248.3350. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000102 · edgardoc.xml · nonDerivative · entry 1

LAMATTINA JOHN L · CIK 0001216074 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,303

F1 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $246.6300 to $247.6100. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000101 · edgardoc.xml · derivative · entry 3

Zimmermann Martine · CIK 0001994049 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,938

Underlying: Common Stock · 2,938 shares

Expires 2036-06-05

F3 · derivative.exercise_date: Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000101 · edgardoc.xml · nonDerivative · entry 2

Zimmermann Martine · CIK 0001994049 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,097

F2 · shares: Represents shares withheld by the Issuer in payment of the tax liability arising in connection with the settlement of restricted stock units.

SEC source: 0002001011-26-000101 · edgardoc.xml · nonDerivative · entry 1

Zimmermann Martine · CIK 0001994049 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,279

F1 · shares: Represents restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000100 · edgardoc.xml · derivative · entry 2

Sabba Stephen L · CIK 0001442372 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,938

Underlying: Common Stock · 2,938 shares

Expires 2036-06-05

F2 · derivative.exercise_date: Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000100 · edgardoc.xml · nonDerivative · entry 1

Sabba Stephen L · CIK 0001442372 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,629

F1 · shares: Represents restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000099 · edgardoc.xml · derivative · entry 2

LAMATTINA JOHN L · CIK 0001216074 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,938

Underlying: Common Stock · 2,938 shares

Expires 2036-06-05

F2 · derivative.exercise_date: Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000099 · edgardoc.xml · nonDerivative · entry 1

LAMATTINA JOHN L · CIK 0001216074 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,560

F1 · shares: Represents restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000098 · edgardoc.xml · derivative · entry 2

KOZARICH JOHN W · CIK 0001223000 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,938

Underlying: Common Stock · 2,938 shares

Expires 2036-06-05

F2 · derivative.exercise_date: Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000098 · edgardoc.xml · nonDerivative · entry 1

KOZARICH JOHN W · CIK 0001223000 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,622

F1 · shares: Represents restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000097 · edgardoc.xml · derivative · entry 2

Haas Jason · CIK 0001883821 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,938

Underlying: Common Stock · 2,938 shares

Expires 2036-06-05

F2 · derivative.exercise_date: Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000097 · edgardoc.xml · nonDerivative · entry 1

Haas Jason · CIK 0001883821 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,442

F1 · shares: Represents restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000096 · edgardoc.xml · derivative · entry 2

Gray Nancy Ryan · CIK 0001714949 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,938

Underlying: Common Stock · 2,938 shares

Expires 2036-06-05

F2 · derivative.exercise_date: Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000096 · edgardoc.xml · nonDerivative · entry 1

Gray Nancy Ryan · CIK 0001714949 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,930

F1 · shares: Represents restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000103 · edgardoc.xml · derivative · entry 5

Aryeh Jason · CIK 0001376960 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,938

Underlying: Common Stock · 2,938 shares

Expires 2036-06-05

F4 · derivative.exercise_date: Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

SEC source: 0002001011-26-000103 · edgardoc.xml · nonDerivative · entry 1

Aryeh Jason · CIK 0001376960 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 107,580

F1 · shares: Represents restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's common stock. Acquired by a grant of the Board of Directors of the Company at their annual meeting on June 5, 2026. Fully vests on the earlier of (A) the date of the next annual meeting of the Company stockholders following the grant date or (B) on the first anniversary of the date of grant.

F2 · balance_after: The total number of shares owned has been reduced by 7,825 shares to reflect a reallocation of the reporting person's shares in accordance with his account records.

SEC source: 0002001011-26-000083 · edgardoc.xml · derivative · entry 9

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 39,444

Underlying: Common Stock · 5,000 shares

Expires 2032-08-01

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 · shares: The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.

F8 · derivative.exercise_date: The stock option vests and is exercisable as to 12.5% of the underlying shares on February 1, 2023, and in 42 substantially equal monthly installments thereafter.

SEC source: 0002001011-26-000083 · edgardoc.xml · nonDerivative · entry 8

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 41,382

F1 · shares: The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.

SEC source: 0002001011-26-000083 · edgardoc.xml · nonDerivative · entry 7

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 41,582

F1 · shares: The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.

F7 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $229.0900 to $230.0000. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000083 · edgardoc.xml · nonDerivative · entry 6

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 42,798

F1 · shares: The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.

F6 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $228.0500 to $228.9650. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000083 · edgardoc.xml · nonDerivative · entry 5

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 43,382

F1 · shares: The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.

F5 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $226.5250 to $227.0100. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000083 · edgardoc.xml · nonDerivative · entry 4

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 43,782

F1 · shares: The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.

F4 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $225.5200 to $226.3700. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000083 · edgardoc.xml · nonDerivative · entry 3

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 45,214

F1 · shares: The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.

F3 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $224.5100 to $225.4600. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000083 · edgardoc.xml · nonDerivative · entry 2

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 45,891

F1 · shares: The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.

F2 · price: The price reported in Column 4 is a weighted-average price. These shares were sold in multiple transactions at prices ranging from $223.4250 to $224.3800. The Reporting Person undertakes to provide the Registrant, any securityholder of the Registrant, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

SEC source: 0002001011-26-000083 · edgardoc.xml · nonDerivative · entry 1

Reardon Andrew · CIK 0001950232 · CLO & Secretary

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 46,382

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 · shares: The transactions reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on November 24, 2025, in accordance with Rule 10b5-1.

SEC source: 0002001011-26-000071 · edgardoc.xml · derivative · entry 4

Espinoza Octavio · CIK 0001905248 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,407

Underlying: Common Stock · 764 shares

Expires 2032-12-13

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: Grant to reporting person of stock options that will vest and become exercisable over a 4-year period measured from December 5, 2022, with 12-1/2% of the shares subject to the stock options vesting on the date that is six months after December 5, 2022 and the remaining stock options vesting in 42 equal monthly installments thereafter.

SEC source: 0002001011-26-000071 · edgardoc.xml · derivative · entry 3

Espinoza Octavio · CIK 0001905248 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 972 shares

Expires 2032-05-05

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_date: The stock option vests as to approximately 55% of the underlying shares in 12 substantially equal monthly installments beginning on January 5, 2025, and approximately 45% of the underlying shares in two substantially equal monthly installments thereafter.

SEC source: 0002001011-26-000071 · edgardoc.xml · nonDerivative · entry 2

Espinoza Octavio · CIK 0001905248 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,679

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: 0002001011-26-000071 · edgardoc.xml · nonDerivative · entry 1

Espinoza Octavio · CIK 0001905248 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,707

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: 0002001011-26-000049 · edgardoc.xml · derivative · entry 11

KOZARICH JOHN W · CIK 0001223000 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,575 shares

Expires 2026-05-23

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.

F6 · derivative.exercise_date: This Option was previously reported as a Grant of 2,329 shares, which vested in full on May 23, 2017, at an exercise price of $119.3000 per share but was adjusted pursuant to the OmniAb Inc. separation from the issuer.

SEC source: 0002001011-26-000049 · edgardoc.xml · nonDerivative · entry 9

KOZARICH JOHN W · CIK 0001223000 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 41,786

SEC source: 0002001011-26-000049 · edgardoc.xml · nonDerivative · entry 8

KOZARICH JOHN W · CIK 0001223000 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 43,361

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.