AMPX

SEC source: 0002067233-26-000019 · wk-form4_1787692877.xml · nonDerivative · entry 7

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 37,260

F5 · shares: These securities were transferred by the reporting person to the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.

F6 · ownership.nature: These securities are held by the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.

SEC source: 0002067233-26-000019 · wk-form4_1787692877.xml · nonDerivative · entry 6

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 578,750

F5 · shares: These securities were transferred by the reporting person to the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.

F3 · balance_after: Includes 568,750 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0002067233-26-000019 · wk-form4_1787692877.xml · nonDerivative · entry 5

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 579,096

F4 · shares: These transfers were made on the same date as bona fide gifts.

F3 · balance_after: Includes 568,750 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0002067233-26-000019 · wk-form4_1787692877.xml · nonDerivative · entry 4

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 584,096

F4 · shares: These transfers were made on the same date as bona fide gifts.

F3 · balance_after: Includes 568,750 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0002067233-26-000019 · wk-form4_1787692877.xml · nonDerivative · entry 3

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 589,096

F4 · shares: These transfers were made on the same date as bona fide gifts.

F3 · balance_after: Includes 568,750 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0002067233-26-000019 · wk-form4_1787692877.xml · nonDerivative · entry 2

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 594,096

F3 · balance_after: Includes 568,750 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0002067233-26-000019 · wk-form4_1787692877.xml · nonDerivative · entry 1

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 602,096

F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.10 to $10.48, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · balance_after: Includes 568,750 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001940928-26-000024 · wk-form4_1787692925.xml · nonDerivative · entry 1

Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 771,629

F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.10 to $10.48, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · balance_after: Includes 525,176 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001476220-26-000034 · wk-form4_1787692956.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,218,397

F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.10 to $10.48, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · balance_after: Includes 911,688 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001045434-26-000009 · wk-form4_1781647250.xml · nonDerivative · entry 3

DIXON DONALD R · CIK 0001045434 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 359,380

F4 · ownership.nature: These securities are held directly by The Dixon Revocable Trust, for which the reporting person and his spouse are co-trustees.

SEC source: 0001045434-26-000009 · wk-form4_1781647250.xml · nonDerivative · entry 1

DIXON DONALD R · CIK 0001045434 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 280,079

F1 · shares: The securities are represented by restricted stock units. Each restricted stock unit represents the reporting person's right to receive one share of issuer's common stock. 100% of the restricted stock units vest on the earlier of (i) the one-year anniversary of the date the restricted stock units were granted and (ii) the day before the next annual meeting of stockholders, subject to the reporting person's continued service as of the vesting date.

F2 · balance_after: Includes 10,423 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001296381-26-000005 · wk-form4_1781647228.xml · nonDerivative · entry 1

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,762

F1 · shares: The securities are represented by restricted stock units. Each restricted stock unit represents the reporting person's right to receive one share of issuer's common stock. 100% of the restricted stock units vest on the earlier of (i) the one-year anniversary of the date the restricted stock units were granted and (ii) the day before the next annual meeting of stockholders, subject to the reporting person's continued service as of the vesting date.

F2 · balance_after: Includes 10,423 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001230569-26-000005 · wk-form4_1781647381.xml · nonDerivative · entry 1

BAYLESS KATHLEEN A · CIK 0001230569 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 216,120

F1 · shares: The securities are represented by restricted stock units. Each restricted stock unit represents the reporting person's right to receive one share of issuer's common stock. 100% of the restricted stock units vest on the earlier of (i) the one-year anniversary of the date the restricted stock units were granted and (ii) the day before the next annual meeting of stockholders, subject to the reporting person's continued service as of the vesting date.

F2 · balance_after: Includes 10,423 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001517394-26-000003 · wk-form4_1781647282.xml · nonDerivative · entry 1

SATTERTHWAITE LIVINGSTON · CIK 0001517394 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 346,506

F1 · shares: The securities are represented by restricted stock units. Each restricted stock unit represents the reporting person's right to receive one share of issuer's common stock. 100% of the restricted stock units vest on the earlier of (i) the one-year anniversary of the date the restricted stock units were granted and (ii) the day before the next annual meeting of stockholders, subject to the reporting person's continued service as of the vesting date.

F2 · balance_after: Includes 199,102 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001045434-26-000007 · wk-form4_1781215013.xml · nonDerivative · entry 1

DIXON DONALD R · CIK 0001045434 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 444,380

F1 · ownership.nature: These securities are held directly by The Dixon Revocable Trust, for which the reporting person and his spouse are co-trustees.

SEC source: 0002067233-26-000015 · wk-form4_1780693023.xml · nonDerivative · entry 4

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 625,625

F2 · balance_after: Includes 615,625 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0002067233-26-000015 · wk-form4_1780693023.xml · nonDerivative · entry 3

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 36,914

F3 · shares: These securities were transferred by the reporting person to the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.

F4 · ownership.nature: These securities are held by the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.

SEC source: 0002067233-26-000015 · wk-form4_1780693023.xml · nonDerivative · entry 2

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 627,625

F3 · shares: These securities were transferred by the reporting person to the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.

F2 · balance_after: Includes 615,625 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0002067233-26-000015 · wk-form4_1780693023.xml · nonDerivative · entry 1

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 664,539

F1 · shares: These transfers were made on the same date as bona fide gifts.

F2 · balance_after: Includes 615,625 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0002067233-26-000012 · wk-form4_1780006923.xml · nonDerivative · entry 1

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 694,923

F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $17.13 to $17.3, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · balance_after: Includes 615,625 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001940928-26-000020 · wk-form4_1780006345.xml · nonDerivative · entry 1

Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 801,310

F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $17.13 to $17.3, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · balance_after: Includes 584,308 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001476220-26-000029 · wk-form4_1780007071.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,280,498

F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $17.13 to $17.3, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · balance_after: Includes 1,038,662 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001045434-26-000005 · wk-form4_1780006199.xml · nonDerivative · entry 1

DIXON DONALD R · CIK 0001045434 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 484,380

F1 · balance_after: On July 22, 2025, the reporting person transferred 125,000 shares of the issuer's common stock, which were previously held directly by the reporting person, to the The Dixon Revocable Trust, for which the reporting person and his spouse are co-trustees.

F2 · ownership.nature: These securities are held directly by The Dixon Revocable Trust, for which the reporting person and his spouse are co-trustees.

SEC source: 0002067233-26-000008 · wk-form4_1779836599.xml · nonDerivative · entry 1

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 699,298

F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $14.54 to $15.08, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · balance_after: Includes 625,000 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001940928-26-000016 · wk-form4_1779837023.xml · nonDerivative · entry 1

Stefan Constantin Ionel · CIK 0001940928 · Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 804,518

F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $14.54 to $15.08, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · balance_after: Includes 591,183 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001476220-26-000025 · wk-form4_1779838306.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,280,854

F1 · kind: This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $14.54 to $15.08, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · balance_after: Includes 1,039,443 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001476220-26-000017 · wk-form4_1778187113.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,348,650

F1 · shares: The securities are represented by restricted stock units. Each restricted stock unit represents the reporting person's right to receive one share of the issuer's common stock. 1/8th of shares subject to award will vest on May 20, 2026 and quarterly thereafter on each August 20, November 20, February 20 and May 20, subject to the reporting person's continued service on each such date, until the award is fully vested on February 20, 2028.

F2 · balance_after: Includes 1,165,635 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · derivative · entry 7

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,787,007

Underlying: Common stock · 187,495 shares

Expires 2031-12-15

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 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · derivative · entry 6

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 1,312,505 shares

Expires 2031-06-16

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 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · nonDerivative · entry 4

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,342,400

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

F4 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $16.37 to $17.31, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F2 · balance_after: Includes 1,159,385 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · nonDerivative · entry 3

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,591,437

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

F3 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $15.37 to $16.36, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F2 · balance_after: Includes 1,159,385 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · nonDerivative · entry 2

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,842,400

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 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

F2 · balance_after: Includes 1,159,385 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001476220-26-000015 · wk-form4_1775163061.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,654,905

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 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

F2 · balance_after: Includes 1,159,385 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001476220-26-000013 · wk-form4_1774393890.xml · nonDerivative · entry 2

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 56,406

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

F4 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $18.89 to $19.36, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · ownership.nature: These securities are held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.

SEC source: 0001476220-26-000013 · wk-form4_1774393890.xml · nonDerivative · entry 1

Sun Kang · CIK 0001476220 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 121,452

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 18, 2025.

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $17.89 to $18.88, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F3 · ownership.nature: These securities are held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.

SEC source: 0001296381-26-000003 · wk-form4_1773357924.xml · derivative · entry 10

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 69,422 shares

Expires 2027-12-12

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.

SEC source: 0001296381-26-000003 · wk-form4_1773357924.xml · derivative · entry 9

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 184,108

Underlying: Common stock · 86,143 shares

Expires 2032-04-13

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.

SEC source: 0001296381-26-000003 · wk-form4_1773357924.xml · nonDerivative · entry 7

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 127,339

F5 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $18.50 to $18.61, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F1 · balance_after: Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001296381-26-000003 · wk-form4_1773357924.xml · nonDerivative · entry 6

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 132,904

F4 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $18.20 to $18.26, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F1 · balance_after: Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001296381-26-000003 · wk-form4_1773357924.xml · nonDerivative · entry 5

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 182,904

F3 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $18.60 to $18.78, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F1 · balance_after: Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001296381-26-000003 · wk-form4_1773357924.xml · nonDerivative · entry 4

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 282,904

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

F1 · balance_after: Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001296381-26-000003 · wk-form4_1773357924.xml · nonDerivative · entry 3

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 213,482

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

F1 · balance_after: Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001835160-26-000007 · wk-form4_1773439724.xml · derivative · entry 4

HSIEH Wen Hsuan · CIK 0001835160 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 270,251 shares

Expires 2032-04-13

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.

SEC source: 0001835160-26-000007 · wk-form4_1773439724.xml · nonDerivative · entry 3

HSIEH Wen Hsuan · CIK 0001835160 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,444

F3 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $18.12 to $18.39, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F1 · balance_after: Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001835160-26-000007 · wk-form4_1773439724.xml · nonDerivative · entry 2

HSIEH Wen Hsuan · CIK 0001835160 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,090

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $18.45 to $18.78, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F1 · balance_after: Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001835160-26-000007 · wk-form4_1773439724.xml · nonDerivative · entry 1

HSIEH Wen Hsuan · CIK 0001835160 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 457,590

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

F1 · balance_after: Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001296381-26-000003 · wk-form4_1773357924.xml · derivative · entry 8

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 69,422

Underlying: Common stock · 104,132 shares

Expires 2027-12-12

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.

SEC source: 0001296381-26-000003 · wk-form4_1773357924.xml · nonDerivative · entry 2

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 127,339

F2 · price: The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $17.90 to $18.00, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, 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 above.

F1 · balance_after: Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0001296381-26-000003 · wk-form4_1773357924.xml · nonDerivative · entry 1

Chu Steven · CIK 0001296381 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 293,971

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

F1 · balance_after: Includes 44,444 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.

SEC source: 0002067233-26-000002 · wk-form4_1772837200.xml · nonDerivative · entry 1

Stepien Thomas M · CIK 0002067233 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 760,000

F1 · shares: The securities are represented by restricted stock units. Each restricted stock unit represents the reporting person's right to receive one share of the issuer's common stock. 1/16th of shares subject to award will vest on May 20, 2026 and quarterly thereafter on each August 20, November 20, February 20 and May 20, subject to the reporting person's continued service on each such date, until the award is fully vested on February 20, 2030.

F2 · balance_after: Includes 750,000 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.