Hughes Owen

Row 1 · 2021-12-23 · Conversion · Acquired 30,000 · Balance 30,000

F1: In connection with the closing of Pardes Biosciences, Inc.'s (formerly known as FS Development Corp. II) business combination, shares of Class B Common Stock of FS Development Corp. II converted into shares of Class A Common Stock of the Issuer.

Row 2 · 2021-12-23 · Conversion · Disposed 30,000 · Balance 0

F1: In connection with the closing of Pardes Biosciences, Inc.'s (formerly known as FS Development Corp. II) business combination, shares of Class B Common Stock of FS Development Corp. II converted into shares of Class A Common Stock of the Issuer.

Row 1 · 2022-08-15 · Other · Disposed 21,650 · Balance 0

F1: Pursuant to the terms of the Merger Agreement and the Tender Offer Statement on Schedule TO filed by Ginger Merger Sub, Inc., these Shares were tendered and disposed of at the Acceptance Time in exchange for the right to receive the consideration per Share of (i) $10.00, payable to the holder thereof of cash, without interest but subject to reduction for any applicable withholding Taxes payable in respect thereof, and (ii) one CVR per share.

Row 2 · 2022-08-15 · Disposition to issuer · Disposed 10,000 · Balance 0

F2: Pursuant to the Merger Agreement, at the Effective Time, these options automatically vested and were cancelled, by virtue of the Merger and without any action on the part of the Reporting Person, and the Reporting Person was entitled to receive (without interest) (A) an amount in cash (less applicable Tax withholdings) equal to the product of (x) the total number of Shares subject to such option immediately prior to the effective time multiplied by (y) the excess, if any, of the Cash Consideration over the applicable exercise price per Share under such option, and (B) one CVR for each Share subject thereto.

Row 3 · 2022-08-15 · Disposition to issuer · Disposed 32,894 · Balance 0

F2: Pursuant to the Merger Agreement, at the Effective Time, these options automatically vested and were cancelled, by virtue of the Merger and without any action on the part of the Reporting Person, and the Reporting Person was entitled to receive (without interest) (A) an amount in cash (less applicable Tax withholdings) equal to the product of (x) the total number of Shares subject to such option immediately prior to the effective time multiplied by (y) the excess, if any, of the Cash Consideration over the applicable exercise price per Share under such option, and (B) one CVR for each Share subject thereto.

Row 1 · 2026-07-14 · Other · Disposed 191,264 · Balance 0

F1: Disposed of pursuant to the Agreement and Plan of Merger, dated April 27, 2026, as amended by Amendment No. 1 to the Agreement and Plan of Merger on May 16, 2026 (as amended, the "Merger Agreement"), by and among XOMA Royalty Corporation (the "Issuer"), Ligand Pharmaceuticals Incorporated ("Parent"), Flex Merger Sub, Inc., a wholly-owned subsidiary of Parent ("Merger Sub"), and XOMA Royalty Holdings Corporation ("HoldCo"). Pursuant to the Merger Agreement, on July 14, 2026, the Issuer effected a holding company reorganization, and Merger Sub merged with and into HoldCo (the "Merger"), with HoldCo surviving the Merger as a wholly-owned subsidiary of Parent. Unless context otherwise requires, all references in this Form 4 to the "Issuer" refer to HoldCo, which assumed all obligations of the Issuer under the Merger Agreement.

F2: At the time the Merger became effective (the "Effective Time"), pursuant to the Merger Agreement, each issued and outstanding share of common stock, par value $0.0075 per share, of the Issuer (the "Shares") (other than certain Shares cancelled pursuant to the Merger Agreement and Dissenting Shares (as defined in the Merger Agreement)) automatically converted into the right to receive (i) $39.00 per Share in cash, without interest, and subject to deduction for any required withholding tax (the "Closing Amount"), plus (ii) an amount of contingent value rights (each, a "CVR") representing a right to receive certain contingent payments subject to and in accordance with the terms of the CVR Agreement (as defined in the Merger Agreement) (the Closing Amount plus CVR, the "Merger Consideration").

F3: At the Effective Time, pursuant to the Merger Agreement, each outstanding restricted stock unit ("RSU") became fully vested and cancelled and converted into the right to receive (A) an amount in cash, without interest, and subject to deduction for any required withholding tax, equal to the product of (i) the number of Shares subject to such RSU and (ii) the Closing Amount, plus (B) one CVR for each Share subject to such RSU.

Row 2 · 2026-07-14 · Other · Disposed 752 · Balance 0

F1: Disposed of pursuant to the Agreement and Plan of Merger, dated April 27, 2026, as amended by Amendment No. 1 to the Agreement and Plan of Merger on May 16, 2026 (as amended, the "Merger Agreement"), by and among XOMA Royalty Corporation (the "Issuer"), Ligand Pharmaceuticals Incorporated ("Parent"), Flex Merger Sub, Inc., a wholly-owned subsidiary of Parent ("Merger Sub"), and XOMA Royalty Holdings Corporation ("HoldCo"). Pursuant to the Merger Agreement, on July 14, 2026, the Issuer effected a holding company reorganization, and Merger Sub merged with and into HoldCo (the "Merger"), with HoldCo surviving the Merger as a wholly-owned subsidiary of Parent. Unless context otherwise requires, all references in this Form 4 to the "Issuer" refer to HoldCo, which assumed all obligations of the Issuer under the Merger Agreement.

F2: At the time the Merger became effective (the "Effective Time"), pursuant to the Merger Agreement, each issued and outstanding share of common stock, par value $0.0075 per share, of the Issuer (the "Shares") (other than certain Shares cancelled pursuant to the Merger Agreement and Dissenting Shares (as defined in the Merger Agreement)) automatically converted into the right to receive (i) $39.00 per Share in cash, without interest, and subject to deduction for any required withholding tax (the "Closing Amount"), plus (ii) an amount of contingent value rights (each, a "CVR") representing a right to receive certain contingent payments subject to and in accordance with the terms of the CVR Agreement (as defined in the Merger Agreement) (the Closing Amount plus CVR, the "Merger Consideration").

Row 3 · 2026-07-14 · Disposition to issuer · Disposed 102,000 · Balance 0

F1: Disposed of pursuant to the Agreement and Plan of Merger, dated April 27, 2026, as amended by Amendment No. 1 to the Agreement and Plan of Merger on May 16, 2026 (as amended, the "Merger Agreement"), by and among XOMA Royalty Corporation (the "Issuer"), Ligand Pharmaceuticals Incorporated ("Parent"), Flex Merger Sub, Inc., a wholly-owned subsidiary of Parent ("Merger Sub"), and XOMA Royalty Holdings Corporation ("HoldCo"). Pursuant to the Merger Agreement, on July 14, 2026, the Issuer effected a holding company reorganization, and Merger Sub merged with and into HoldCo (the "Merger"), with HoldCo surviving the Merger as a wholly-owned subsidiary of Parent. Unless context otherwise requires, all references in this Form 4 to the "Issuer" refer to HoldCo, which assumed all obligations of the Issuer under the Merger Agreement.

F4: Prior to the Effective Time, pursuant to the Merger Agreement, each issued and outstanding share of 8.375% Series B Cumulative Perpetual Preferred Stock, par value $0.05 per share, of the Issuer (including the Depositary Shares) was redeemed by the Issuer in accordance with the terms of the certificate of designation governing such stock, including payment of all accrued and unpaid dividends thereon through the date of such redemption.

Row 4 · 2026-07-14 · Disposition to issuer · Disposed 100,000 · Balance 0

F1: Disposed of pursuant to the Agreement and Plan of Merger, dated April 27, 2026, as amended by Amendment No. 1 to the Agreement and Plan of Merger on May 16, 2026 (as amended, the "Merger Agreement"), by and among XOMA Royalty Corporation (the "Issuer"), Ligand Pharmaceuticals Incorporated ("Parent"), Flex Merger Sub, Inc., a wholly-owned subsidiary of Parent ("Merger Sub"), and XOMA Royalty Holdings Corporation ("HoldCo"). Pursuant to the Merger Agreement, on July 14, 2026, the Issuer effected a holding company reorganization, and Merger Sub merged with and into HoldCo (the "Merger"), with HoldCo surviving the Merger as a wholly-owned subsidiary of Parent. Unless context otherwise requires, all references in this Form 4 to the "Issuer" refer to HoldCo, which assumed all obligations of the Issuer under the Merger Agreement.

F5: At the Effective Time, pursuant to the Merger Agreement, each outstanding option to purchase Shares (each, a "Company Stock Option") that had an exercise price per Share that was less than the sum of the Closing Amount and the fair market value of one CVR (each, a "Terminating Company Stock Option") became fully vested and was cancelled, and in exchange therefor, the holder received (i) an amount in cash, without interest, and subject to deduction for any required withholding taxes, equal to the product of (A) the excess of the Closing Amount over the exercise price per Share with respect to such Terminating Company Stock Option and (B) the number of Shares subject to such Terminating Company Stock Option, plus (ii) one CVR with respect to each Share subject to such Terminating Company Stock Option.

F6: As of immediately prior to the Effective Time, each Company Stock Option that did not constitute a Terminating Company Stock Option was cancelled and no consideration was delivered in exchange therefor.

Row 5 · 2026-07-14 · Disposition to issuer · Disposed 75,000 · Balance 0

F1: Disposed of pursuant to the Agreement and Plan of Merger, dated April 27, 2026, as amended by Amendment No. 1 to the Agreement and Plan of Merger on May 16, 2026 (as amended, the "Merger Agreement"), by and among XOMA Royalty Corporation (the "Issuer"), Ligand Pharmaceuticals Incorporated ("Parent"), Flex Merger Sub, Inc., a wholly-owned subsidiary of Parent ("Merger Sub"), and XOMA Royalty Holdings Corporation ("HoldCo"). Pursuant to the Merger Agreement, on July 14, 2026, the Issuer effected a holding company reorganization, and Merger Sub merged with and into HoldCo (the "Merger"), with HoldCo surviving the Merger as a wholly-owned subsidiary of Parent. Unless context otherwise requires, all references in this Form 4 to the "Issuer" refer to HoldCo, which assumed all obligations of the Issuer under the Merger Agreement.

F5: At the Effective Time, pursuant to the Merger Agreement, each outstanding option to purchase Shares (each, a "Company Stock Option") that had an exercise price per Share that was less than the sum of the Closing Amount and the fair market value of one CVR (each, a "Terminating Company Stock Option") became fully vested and was cancelled, and in exchange therefor, the holder received (i) an amount in cash, without interest, and subject to deduction for any required withholding taxes, equal to the product of (A) the excess of the Closing Amount over the exercise price per Share with respect to such Terminating Company Stock Option and (B) the number of Shares subject to such Terminating Company Stock Option, plus (ii) one CVR with respect to each Share subject to such Terminating Company Stock Option.

F6: As of immediately prior to the Effective Time, each Company Stock Option that did not constitute a Terminating Company Stock Option was cancelled and no consideration was delivered in exchange therefor.

Row 6 · 2026-07-14 · Disposition to issuer · Disposed 116,245 · Balance 0

F1: Disposed of pursuant to the Agreement and Plan of Merger, dated April 27, 2026, as amended by Amendment No. 1 to the Agreement and Plan of Merger on May 16, 2026 (as amended, the "Merger Agreement"), by and among XOMA Royalty Corporation (the "Issuer"), Ligand Pharmaceuticals Incorporated ("Parent"), Flex Merger Sub, Inc., a wholly-owned subsidiary of Parent ("Merger Sub"), and XOMA Royalty Holdings Corporation ("HoldCo"). Pursuant to the Merger Agreement, on July 14, 2026, the Issuer effected a holding company reorganization, and Merger Sub merged with and into HoldCo (the "Merger"), with HoldCo surviving the Merger as a wholly-owned subsidiary of Parent. Unless context otherwise requires, all references in this Form 4 to the "Issuer" refer to HoldCo, which assumed all obligations of the Issuer under the Merger Agreement.

F7: Immediately prior to the Effective Time, pursuant to the Merger Agreement, each outstanding performance stock unit award ("PSU") automatically converted into and was substituted with a restricted stock unit award (each, a "Converted PSU") with respect to a number of Shares equal to either (x) for each PSU granted on or after March 1, 2026, the excess of (A) 100% of the "Target Shares" (as the term "Target Shares" is defined and set forth in the applicable award agreement governing such PSU) underlying such PSU over (B) the number of "Target Shares" as to which, as of immediately prior to the Effective Time, the "Performance-Requirement" has been achieved, or (y) for each PSU granted prior to March 1, 2026, the excess of (A) the percentage of the "Target Shares" underlying such PSU as to which the "Performance-Requirement" would be satisfied if the "Closing Price" (as defined in the applicable award agreement governing such PSU) were equal to the Closing Amount over

F8: (Continued from footnote 7) (B) the number of "Target Shares" as to which, as of immediately prior to the Effective Time, the "Performance-Requirement" has been achieved. Immediately prior to the Effective Time, each Converted PSU was automatically cancelled and converted into the right to receive (A) an amount in cash, without interest, and subject to deduction for any required tax withholding, equal to the product of (i) the number of Shares subject to such Converted PSU and (ii) the Closing Amount, and (B) one CVR for each Share subject to such Converted PSU.

Row 7 · 2026-07-14 · Disposition to issuer · Disposed 132,714 · Balance 0

F1: Disposed of pursuant to the Agreement and Plan of Merger, dated April 27, 2026, as amended by Amendment No. 1 to the Agreement and Plan of Merger on May 16, 2026 (as amended, the "Merger Agreement"), by and among XOMA Royalty Corporation (the "Issuer"), Ligand Pharmaceuticals Incorporated ("Parent"), Flex Merger Sub, Inc., a wholly-owned subsidiary of Parent ("Merger Sub"), and XOMA Royalty Holdings Corporation ("HoldCo"). Pursuant to the Merger Agreement, on July 14, 2026, the Issuer effected a holding company reorganization, and Merger Sub merged with and into HoldCo (the "Merger"), with HoldCo surviving the Merger as a wholly-owned subsidiary of Parent. Unless context otherwise requires, all references in this Form 4 to the "Issuer" refer to HoldCo, which assumed all obligations of the Issuer under the Merger Agreement.

F7: Immediately prior to the Effective Time, pursuant to the Merger Agreement, each outstanding performance stock unit award ("PSU") automatically converted into and was substituted with a restricted stock unit award (each, a "Converted PSU") with respect to a number of Shares equal to either (x) for each PSU granted on or after March 1, 2026, the excess of (A) 100% of the "Target Shares" (as the term "Target Shares" is defined and set forth in the applicable award agreement governing such PSU) underlying such PSU over (B) the number of "Target Shares" as to which, as of immediately prior to the Effective Time, the "Performance-Requirement" has been achieved, or (y) for each PSU granted prior to March 1, 2026, the excess of (A) the percentage of the "Target Shares" underlying such PSU as to which the "Performance-Requirement" would be satisfied if the "Closing Price" (as defined in the applicable award agreement governing such PSU) were equal to the Closing Amount over

F8: (Continued from footnote 7) (B) the number of "Target Shares" as to which, as of immediately prior to the Effective Time, the "Performance-Requirement" has been achieved. Immediately prior to the Effective Time, each Converted PSU was automatically cancelled and converted into the right to receive (A) an amount in cash, without interest, and subject to deduction for any required tax withholding, equal to the product of (i) the number of Shares subject to such Converted PSU and (ii) the Closing Amount, and (B) one CVR for each Share subject to such Converted PSU.