MAGN

SEC source: 0001127602-24-005925 · form4.xml · derivative · entry 3

Beck Eileen L · CIK 0001702499 · VP, Global Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,828

Underlying: Common Stock, Par Value $.01 · 83 shares

Expires 2025-02-18

F3 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F4 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 2/18/2022 SET RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F6 · price: Not applicable to this transaction.

F5 · derivative.exercise_date: This RSU grant vesting on 2/18/2024 is the second one-third vesting of the SET RSU 2/18/2022 Grant. The final one-third vests, and all restrictions lapse, on 2/18/2025.

SEC source: 0001127602-24-005925 · form4.xml · nonDerivative · entry 2

Beck Eileen L · CIK 0001702499 · VP, Global Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,308

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 · price: Because the payout occurred on a Sunday, February 18, 2024, the value of the shares was determined using the closing price of the previous business day Friday, February 16, 2024.

SEC source: 0001127602-24-005925 · form4.xml · nonDerivative · entry 1

Beck Eileen L · CIK 0001702499 · VP, Global Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,475

F1 · shares: These shares are being withheld to satisfy tax obligations.

SEC source: 0001127602-24-005612 · form4.xml · derivative · entry 4

Urey Jill L. · CIK 0001789456 · VP, GC & Compliance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 2,402 shares

Expires 2024-02-17

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_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F5 · derivative.exercise_date: This grant vests in full, and all restrictions lapse, three years from the Grant Date.

SEC source: 0001127602-24-005612 · form4.xml · derivative · entry 3

Urey Jill L. · CIK 0001789456 · VP, GC & Compliance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,402

Underlying: Common Stock, Par Value $.01 · 159 shares

Expires 2024-02-17

F3 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F4 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 2/17/2021 SET RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F6 · price: Not applicable to this transaction.

F5 · derivative.exercise_date: This grant vests in full, and all restrictions lapse, three years from the Grant Date.

SEC source: 0001127602-24-005612 · form4.xml · nonDerivative · entry 2

Urey Jill L. · CIK 0001789456 · VP, GC & Compliance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,520

F2 · shares: These shares are being withheld to satisfy tax obligations.

SEC source: 0001127602-24-005612 · form4.xml · nonDerivative · entry 1

Urey Jill L. · CIK 0001789456 · VP, GC & Compliance

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,318

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: Because the payout occurred on a Saturday, February 17, 2024, the value of the shares was determined using the closing price of the previous business day Friday, February 16, 2024.

SEC source: 0001127602-24-005607 · form4.xml · derivative · entry 4

Shettigar Ramesh · CIK 0001884425 · Senior VP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 3,202 shares

Expires 2024-02-17

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_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F5 · derivative.exercise_date: This grant vests in full, and all restrictions lapse, three years from the Grant Date.

SEC source: 0001127602-24-005607 · form4.xml · derivative · entry 3

Shettigar Ramesh · CIK 0001884425 · Senior VP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,202

Underlying: Common Stock, Par Value $.01 · 212 shares

Expires 2024-02-17

F3 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F4 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 2/17/2021 SET RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F6 · price: Not applicable to this transaction.

F5 · derivative.exercise_date: This grant vests in full, and all restrictions lapse, three years from the Grant Date.

SEC source: 0001127602-24-005607 · form4.xml · nonDerivative · entry 2

Shettigar Ramesh · CIK 0001884425 · Senior VP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,557

F2 · shares: These shares are being withheld to satisfy tax obligations.

SEC source: 0001127602-24-005607 · form4.xml · nonDerivative · entry 1

Shettigar Ramesh · CIK 0001884425 · Senior VP, CFO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,784

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: Because the payout occurred on a Saturday, February 17, 2024, the value of the shares was determined using the closing price of the previous business day Friday, February 16, 2024.

SEC source: 0001127602-24-005603 · form4.xml · derivative · entry 4

ELDER DAVID C · CIK 0001272556 · Vice Pres, Finance and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 6,059 shares

Expires 2024-02-17

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_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F5 · derivative.exercise_date: This grant vests in full, and all restrictions lapse, three years from the Grant Date.

SEC source: 0001127602-24-005603 · form4.xml · derivative · entry 3

ELDER DAVID C · CIK 0001272556 · Vice Pres, Finance and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,059

Underlying: Common Stock, Par Value $.01 · 402 shares

Expires 2024-02-17

F3 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F4 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 2/17/2021 SET RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F6 · price: Not applicable to this transaction.

F5 · derivative.exercise_date: This grant vests in full, and all restrictions lapse, three years from the Grant Date.

SEC source: 0001127602-24-005603 · form4.xml · nonDerivative · entry 2

ELDER DAVID C · CIK 0001272556 · Vice Pres, Finance and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,148

F2 · shares: These shares are being withheld to satisfy tax obligations.

SEC source: 0001127602-24-005603 · form4.xml · nonDerivative · entry 1

ELDER DAVID C · CIK 0001272556 · Vice Pres, Finance and CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,198

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: Because the payout occurred on a Saturday, February 17, 2024, the value of the shares was determined using the closing price of the previous business day Friday, February 16, 2024.

SEC source: 0001127602-24-005555 · form4.xml · derivative · entry 4

Beck Eileen L · CIK 0001702499 · VP, Global Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 6,273 shares

Expires 2024-02-17

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_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F4 · derivative.exercise_date: This grant vests in full, and all restrictions lapse, three years from the Grant Date.

SEC source: 0001127602-24-005555 · form4.xml · derivative · entry 3

Beck Eileen L · CIK 0001702499 · VP, Global Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,273

Underlying: Common Stock, Par Value $.01 · 416 shares

Expires 2024-02-17

F2 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F3 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 2/17/2021 SET RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F5 · price: Not applicable to this transaction.

F4 · derivative.exercise_date: This grant vests in full, and all restrictions lapse, three years from the Grant Date.

SEC source: 0001127602-24-005555 · form4.xml · nonDerivative · entry 2

Beck Eileen L · CIK 0001702499 · VP, Global Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,853

F1 · shares: These shares are being withheld to satisfy tax obligations.

SEC source: 0001127602-24-005555 · form4.xml · nonDerivative · entry 1

Beck Eileen L · CIK 0001702499 · VP, Global Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,976

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: 0000950170-23-055740 · ownership.xml · nonDerivative · entry 3

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Black Diamond Offshore Ltd. · CIK 0001452364 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 7,176,000

F2 · ownership.nature: The shares of Common Stock to which this relates are held directly by Offshore, Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore"), Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage"), and EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA" and, together with Offshore, Double Offshore and Arbitrage, the "Funds"). Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F3 · ownership.nature: (continued from footnote 2) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

F5 · ownership.nature: Transaction reflects direct acquisition by Double Offshore of 15,804 shares, by Arbitrage of 23,634 shares, and by EDCA of 10,562 shares.

SEC source: 0000950170-23-055740 · ownership.xml · nonDerivative · entry 2

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Black Diamond Offshore Ltd. · CIK 0001452364 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 7,126,000

F4 · price: Transaction reflects direct acquisition by Offshore of 25,000 shares. The transactions referenced herein provide for various per share prices ranging from $1.52968 to $1.56. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

F2 · ownership.nature: The shares of Common Stock to which this relates are held directly by Offshore, Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore"), Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage"), and EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA" and, together with Offshore, Double Offshore and Arbitrage, the "Funds"). Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F3 · ownership.nature: (continued from footnote 2) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

F4 · ownership.nature: Transaction reflects direct acquisition by Offshore of 25,000 shares. The transactions referenced herein provide for various per share prices ranging from $1.52968 to $1.56. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

SEC source: 0000950170-23-055740 · ownership.xml · nonDerivative · entry 1

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Black Diamond Offshore Ltd. · CIK 0001452364 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 7,101,000

F1 · price: Transaction reflects direct acquisition by Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Offshore") of 75,000 shares. The transactions referenced herein provide for various per share prices ranging from $1.53189 to $1.54. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

F1 · ownership.nature: Transaction reflects direct acquisition by Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Offshore") of 75,000 shares. The transactions referenced herein provide for various per share prices ranging from $1.53189 to $1.54. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

F2 · ownership.nature: The shares of Common Stock to which this relates are held directly by Offshore, Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore"), Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage"), and EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA" and, together with Offshore, Double Offshore and Arbitrage, the "Funds"). Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F3 · ownership.nature: (continued from footnote 2) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

SEC source: 0000950170-23-053160 · ownership.xml · nonDerivative · entry 1

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 7,026,000

F1 · ownership.nature: Transaction reflects direct acquisition by Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore") of 155,298 shares, by Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage") of 55,776 shares and by EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA," together with Double Offshore and Arbitrage, the "Funds") of 24,926 shares.

F2 · ownership.nature: The shares of Common Stock to which this relates are held directly by Double Offshore, Arbitrage and EDCA. Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of, the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F3 · ownership.nature: (continued from footnote 2) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

SEC source: 0000950170-23-051896 · ownership.xml · nonDerivative · entry 2

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 6,790,000

F4 · price: Transaction reflects direct acquisition by Double Offshore of 28,635 shares, by Arbitrage of 36,229 shares and by EDCA of 10,136 shares. The transactions referenced herein provide for various per share prices ranging from $1.89903 to $1.91. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

F2 · ownership.nature: The shares of Common Stock to which this relates are held directly by Double Offshore, Arbitrage and EDCA. Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of, the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F3 · ownership.nature: (continued from footnote 2) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

F4 · ownership.nature: Transaction reflects direct acquisition by Double Offshore of 28,635 shares, by Arbitrage of 36,229 shares and by EDCA of 10,136 shares. The transactions referenced herein provide for various per share prices ranging from $1.89903 to $1.91. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

SEC source: 0000950170-23-051896 · ownership.xml · nonDerivative · entry 1

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 6,715,000

F1 · price: Transaction reflects direct acquisition by Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore") of 159,599 shares, by Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage") of 50,049 shares and by EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA," together with Double Offshore and Arbitrage, the "Funds") of 40,352 shares. The transactions referenced herein provide for various per share prices ranging from $1.95 to $1.99406. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

F1 · ownership.nature: Transaction reflects direct acquisition by Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore") of 159,599 shares, by Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage") of 50,049 shares and by EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA," together with Double Offshore and Arbitrage, the "Funds") of 40,352 shares. The transactions referenced herein provide for various per share prices ranging from $1.95 to $1.99406. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

F2 · ownership.nature: The shares of Common Stock to which this relates are held directly by Double Offshore, Arbitrage and EDCA. Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of, the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F3 · ownership.nature: (continued from footnote 2) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

SEC source: 0001127602-23-024800 · form4.xml · derivative · entry 2

STEWART LEE C · CIK 0001192102 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 23,000 shares

Expires 2024-05-08

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: 0001127602-23-024800 · form4.xml · nonDerivative · entry 1

STEWART LEE C · CIK 0001192102 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 123,719

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: Mr. Stewart resigned from Glatfelter's Board of Directors on September 25, 2023, and therefore, 100% of his unvested RSUs immediately vested and the restrictions with respect to such RSUs lapsed.

SEC source: 0000950170-23-047056 · ownership.xml · nonDerivative · entry 2

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 6,465,000

F4 · price: Transaction reflects direct acquisition by Double Offshore of 100,000 shares. The transactions referenced herein provide for various per share prices ranging from $1.996695 to $2.015. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

F2 · ownership.nature: The shares of Common Stock to which this relates are held directly by Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore"), Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage") and EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA," together with Double Offshore and Arbitrage, the "Funds"). Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of, the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F3 · ownership.nature: (continued from footnote 2) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

F4 · ownership.nature: Transaction reflects direct acquisition by Double Offshore of 100,000 shares. The transactions referenced herein provide for various per share prices ranging from $1.996695 to $2.015. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

SEC source: 0000950170-23-047056 · ownership.xml · nonDerivative · entry 1

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 6,365,000

F1 · price: Transaction reflects direct acquisition by Double Offshore of 200,000 shares. The transactions referenced herein provide for various per share prices ranging from $1.91 to $2.049989. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

F1 · ownership.nature: Transaction reflects direct acquisition by Double Offshore of 200,000 shares. The transactions referenced herein provide for various per share prices ranging from $1.91 to $2.049989. The Reporting Persons undertake to provide to the Staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased or sold at each separate price.

F2 · ownership.nature: The shares of Common Stock to which this relates are held directly by Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore"), Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage") and EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA," together with Double Offshore and Arbitrage, the "Funds"). Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of, the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F3 · ownership.nature: (continued from footnote 2) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

SEC source: 0000899243-23-018213 · doc4.xml · nonDerivative · entry 3

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 6,165,000

F1 · ownership.nature: The shares of Common Stock to which this relates are held directly by Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore"), Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage") and EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA," together with Double Offshore and Arbitrage, the "Funds"). Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of, the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F2 · ownership.nature: (continued from footnote 1) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

F5 · ownership.nature: Transaction reflects direct acquisition by Double Offshore of 22,171 shares, by Arbitrage of 30,519 shares and by EDCA of 12,310 shares.

SEC source: 0000899243-23-018213 · doc4.xml · nonDerivative · entry 2

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 6,100,000

F1 · ownership.nature: The shares of Common Stock to which this relates are held directly by Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore"), Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage") and EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA," together with Double Offshore and Arbitrage, the "Funds"). Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of, the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F2 · ownership.nature: (continued from footnote 1) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

F4 · ownership.nature: Transaction reflects direct acquisition by Double Offshore of 1,932 shares, by Arbitrage of 2,430 shares and by EDCA of 638 shares.

SEC source: 0000899243-23-018213 · doc4.xml · nonDerivative · entry 1

CARLSON CAPITAL L P · CIK 0001056973 · 10% owner

Double Black Diamond Offshore Ltd · CIK 0001404976 · 10% owner

Black Diamond Arbitrage Offshore Ltd. · CIK 0001613525 · 10% owner

EDCA 2019 Fund, L.P. · CIK 0001951606 · 10% owner

Asgard Investment Corp. II · CIK 0001503915 · 10% owner

Carlson Clint Duane · CIK 0001404625 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 6,095,000

F1 · ownership.nature: The shares of Common Stock to which this relates are held directly by Double Black Diamond Offshore Ltd., a Cayman Islands exempted company ("Double Offshore"), Black Diamond Arbitrage Offshore Ltd., a Cayman Islands exempted company ("Arbitrage") and EDCA 2019 Fund, L.P., a Delaware limited partnership ("EDCA," together with Double Offshore and Arbitrage, the "Funds"). Carlson Capital, L.P., a Delaware limited partnership ("Carlson Capital") serves as the investment manager to, and has the power to direct the affairs of, the Funds. Asgard Investment Corp. II, a Delaware corporation ("Asgard II") serves as the general partner of, and has the power to direct the affairs of, Carlson Capital. Mr. Clint D. Carlson, a U.S. citizen, serves as the president of, and has the power to direct the affairs of, Asgard II and Carlson Capital.

F2 · ownership.nature: (continued from footnote 1) Each of the reporting persons disclaims beneficial ownership of the securities to which this Form 4 relates for the purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of the reporting person's pecuniary interest in the securities.

F3 · ownership.nature: Transaction reflects direct acquisition by Double Offshore of 69,553 shares, by Arbitrage of 87,489 shares and by EDCA of 22,958 shares.

SEC source: 0001127602-24-021470 · form4.xml · derivative · entry 3

Illetschko Boris · CIK 0001995579 · SVP, Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,682

Underlying: Common Stock, Par Value $.01 · 39,682 shares

Expires 2026-08-01

F2 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F3 · derivative.exercise_date: This 2023 RSU LTIP grant vests one-third 8/1/2024, one-third 8/1/2025 and one-third 8/1/2026. This grant vests in full, and all restrictions lapse, three years from the Grant Date

SEC source: 0001127602-23-015743 · form4.xml · derivative · entry 4

Brown Bruce · CIK 0001436840 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 14,896 shares

Expires 2023-05-12

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.

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

SEC source: 0001127602-23-015743 · form4.xml · derivative · entry 3

Brown Bruce · CIK 0001436840 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,896

Underlying: Common Stock, Par Value $.01 · 321 shares

Expires 2023-05-12

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F2 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 05/12/2022 Director RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F3 · price: Not applicable to this transaction.

SEC source: 0001127602-23-015743 · form4.xml · nonDerivative · entry 1

Brown Bruce · CIK 0001436840 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,865

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: 0001127602-23-015737 · form4.xml · derivative · entry 3

DAHLBERG KATHLEEN · CIK 0001192107 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 14,896 shares

Expires 2023-05-12

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.

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

SEC source: 0001127602-23-015737 · form4.xml · derivative · entry 2

DAHLBERG KATHLEEN · CIK 0001192107 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,896

Underlying: Common Stock, Par Value $.01 · 321 shares

Expires 2023-05-12

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F2 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 05/12/2022 Director RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F3 · price: Not applicable to this transaction.

SEC source: 0001127602-23-015737 · form4.xml · nonDerivative · entry 1

DAHLBERG KATHLEEN · CIK 0001192107 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,719

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: 0001127602-23-015731 · form4.xml · derivative · entry 4

Fogarty Kevin Michael · CIK 0001478560 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 14,896 shares

Expires 2023-05-12

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.

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

SEC source: 0001127602-23-015731 · form4.xml · derivative · entry 3

Fogarty Kevin Michael · CIK 0001478560 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,896

Underlying: Common Stock, Par Value $.01 · 321 shares

Expires 2023-05-12

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F2 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 05/12/2022 Director RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F3 · price: Not applicable to this transaction.

SEC source: 0001127602-23-015731 · form4.xml · nonDerivative · entry 1

Fogarty Kevin Michael · CIK 0001478560 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,021

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: 0001127602-23-015728 · form4.xml · derivative · entry 3

Gallagher Marie T. · CIK 0001521126 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 14,896 shares

Expires 2023-05-12

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.

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

SEC source: 0001127602-23-015728 · form4.xml · derivative · entry 2

Gallagher Marie T. · CIK 0001521126 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,896

Underlying: Common Stock, Par Value $.01 · 321 shares

Expires 2023-05-12

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F2 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 05/12/2022 Director RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F3 · price: Not applicable to this transaction.

SEC source: 0001127602-23-015728 · form4.xml · nonDerivative · entry 1

Gallagher Marie T. · CIK 0001521126 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,528

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: 0001127602-23-015717 · form4.xml · derivative · entry 3

HALL J ROBERT · CIK 0001194710 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 14,896 shares

Expires 2023-05-12

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.

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

SEC source: 0001127602-23-015717 · form4.xml · derivative · entry 2

HALL J ROBERT · CIK 0001194710 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,896

Underlying: Common Stock, Par Value $.01 · 321 shares

Expires 2023-05-12

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F2 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 05/12/2022 Director RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F3 · price: Not applicable to this transaction.

SEC source: 0001127602-23-015717 · form4.xml · nonDerivative · entry 1

HALL J ROBERT · CIK 0001194710 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 122,469

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: 0001127602-23-015723 · form4.xml · derivative · entry 3

Hackett Darrel H. · CIK 0001829199 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, Par Value $.01 · 14,896 shares

Expires 2023-05-12

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.

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

SEC source: 0001127602-23-015723 · form4.xml · derivative · entry 2

Hackett Darrel H. · CIK 0001829199 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,896

Underlying: Common Stock, Par Value $.01 · 321 shares

Expires 2023-05-12

F1 · derivative.exercise_price: Not applicable to this transaction. RSUs have no value until all restrictions lapse on the final vesting date.

F2 · shares: These are dividend equivalents in the form of additional Restricted Stock Units ("RSUs") that have accrued on the 05/12/2022 Director RSU Grant reported previously. The dividend equivalents are added to the initial grant at the time of payout.

F3 · price: Not applicable to this transaction.