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Seaberg John D

Disclosed activity across 1 company

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71205
SEC CIK
0001421888

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Anteris Technologies Global Corp.AVR · Entity 5089DirectorDecember 16, 2025December 18, 2025

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Anteris Technologies Global Corp.

Report date December 16, 2025 · Filed December 18, 2025

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect43,635 Reported balance After 2025-12-16 transaction · row 1
1 source row

Row 1 · 2025-12-16 · Exercise / conversion · Acquired 27,777 · Balance 43,635

F1: Each restricted stock unit converts into a share of common stock on a one-for-one basis.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect55,556 Reported balance After 2025-12-16 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2025-12-16 · Exercise / conversion · Disposed 27,777 · Balance 55,556

F1: Each restricted stock unit converts into a share of common stock on a one-for-one basis.

F3: On December 16, 2024, the Reporting Person was contingently granted 83,333 restricted stock units, which vest in approximately equal installments on December 16, 2025, 2026 and 2027, subject to the Reporting Person's continues service through each vesting date. These restricted stock units were approved by stockholders on December 3, 2025.

Common StockSEC Table I · non-derivativeIndirectSee Footnote3,852 Reported balance Holding disclosure · report date 2025-12-16 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 3,852

F2: Held by Citibank, N.A. London as custodian for Mr. Seaberg.

Filing footnotes · ownership attribution and instrument terms

F1: Each restricted stock unit converts into a share of common stock on a one-for-one basis.

F2: Held by Citibank, N.A. London as custodian for Mr. Seaberg.

F3: On December 16, 2024, the Reporting Person was contingently granted 83,333 restricted stock units, which vest in approximately equal installments on December 16, 2025, 2026 and 2027, subject to the Reporting Person's continues service through each vesting date. These restricted stock units were approved by stockholders on December 3, 2025.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
December 16, 2025 Filed Dec 18, 2025 23:30 UTC Anteris Technologies Global Corp. AVR · Entity 5089 Exercise / conversionRestricted Stock Units · Derivative 27,777 $0.00 $0.00
Disclosure

SEC source: 0001140361-25-046071 · form4.xml · derivative · entry 3

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,556

Underlying: Common Stock · 27,777 shares

Expires not disclosed

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: Each restricted stock unit converts into a share of common stock on a one-for-one basis.

F3 · derivative.exercise_date: On December 16, 2024, the Reporting Person was contingently granted 83,333 restricted stock units, which vest in approximately equal installments on December 16, 2025, 2026 and 2027, subject to the Reporting Person's continues service through each vesting date. These restricted stock units were approved by stockholders on December 3, 2025.

F3 · derivative.expiration_date: On December 16, 2024, the Reporting Person was contingently granted 83,333 restricted stock units, which vest in approximately equal installments on December 16, 2025, 2026 and 2027, subject to the Reporting Person's continues service through each vesting date. These restricted stock units were approved by stockholders on December 3, 2025.

Read SEC document
December 16, 2025 Filed Dec 18, 2025 23:30 UTC Anteris Technologies Global Corp. AVR · Entity 5089 Exercise / conversionCommon Stock 27,777 Not disclosed Not disclosed
Disclosure

SEC source: 0001140361-25-046071 · form4.xml · nonDerivative · entry 1

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,635

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: Each restricted stock unit converts into a share of common stock on a one-for-one basis.

Read SEC document
December 03, 2025 Filed Dec 5, 2025 23:30 UTC Anteris Technologies Global Corp. AVR · Entity 5089 GrantRestricted Stock Units · Derivative 56,053 $0.00 $0.00
Disclosure

SEC source: 0001140361-25-044606 · form4.xml · derivative · entry 2

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,053

Underlying: Common Stock · 56,053 shares

Expires not disclosed

F2 · derivative.exercise_price: Each RSU represents a right to receive one share of common stock. These RSU vest on the earlier of the first anniversary of the grant date and the date of the next occurring annual stockholders meeting, subject to continued service through the vesting date.

F2 · derivative.exercise_date: Each RSU represents a right to receive one share of common stock. These RSU vest on the earlier of the first anniversary of the grant date and the date of the next occurring annual stockholders meeting, subject to continued service through the vesting date.

F2 · derivative.expiration_date: Each RSU represents a right to receive one share of common stock. These RSU vest on the earlier of the first anniversary of the grant date and the date of the next occurring annual stockholders meeting, subject to continued service through the vesting date.

Read SEC document
December 03, 2025 Filed Dec 5, 2025 23:30 UTC Anteris Technologies Global Corp. AVR · Entity 5089 GrantRestricted Stock Units · Derivative 83,333 $0.00 $0.00
Disclosure

SEC source: 0001140361-25-044606 · form4.xml · derivative · entry 1

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,333

Underlying: Common Stock · 83,333 shares

Expires not disclosed

F1 · derivative.exercise_price: Each RSU represents a right to receive one share of common stock. These RSU vest in three approximately equal annual installments on December 16, 2025, 2026 and 2027, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.exercise_date: Each RSU represents a right to receive one share of common stock. These RSU vest in three approximately equal annual installments on December 16, 2025, 2026 and 2027, subject to the Reporting Person's continued service through each vesting date.

F1 · derivative.expiration_date: Each RSU represents a right to receive one share of common stock. These RSU vest in three approximately equal annual installments on December 16, 2025, 2026 and 2027, subject to the Reporting Person's continued service through each vesting date.

Read SEC document
March 06, 2025 Filed Mar 20, 2025 23:43 UTC Anteris Technologies Global Corp. AVR · Entity 5089 Exercise / conversionStock Option · Derivative 40,000 $0.00 Strike: $7.13 $0.00
Disclosure

SEC source: 0001140361-25-009754 · form4.xml · derivative · entry 4

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 40,000 shares

Expires 2025-03-20

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 · kind: A total of 36,148 options were exercised and settled in cash, with the net cash equivalent (after the exercise price) used to cover the exercise of an additional 3,852 options. The issuance of Common Stock was finalized on March 20, 2025.

F3 · derivative.exercise_date: The option vested in two equal installments on February 8, 2022 and June 24, 2022.

Read SEC document
March 06, 2025 Filed Mar 20, 2025 23:43 UTC Anteris Technologies Global Corp. AVR · Entity 5089 Tax withholdingCommon Stock 36,148 $7.89 $285,207.72
Disclosure

SEC source: 0001140361-25-009754 · form4.xml · nonDerivative · entry 2

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 3,852

F1 · ownership.nature: Held by Citibank, N.A. London as custodian for Mr. Seaberg.

Read SEC document
March 06, 2025 Filed Mar 20, 2025 23:43 UTC Anteris Technologies Global Corp. AVR · Entity 5089 Exercise / conversionCommon Stock 40,000 $7.13 $285,200.00
Disclosure

SEC source: 0001140361-25-009754 · form4.xml · nonDerivative · entry 1

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 40,000

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: A total of 36,148 options were exercised and settled in cash, with the net cash equivalent (after the exercise price) used to cover the exercise of an additional 3,852 options. The issuance of Common Stock was finalized on March 20, 2025.

F1 · ownership.nature: Held by Citibank, N.A. London as custodian for Mr. Seaberg.

Read SEC document
March 06, 2025 Filed Mar 21, 2025 13:30 UTC Amendment Anteris Technologies Global Corp. AVR · Entity 5089 Exercise / conversionStock Option · Derivative 40,000 $0.00 Strike: $7.13 $0.00
Disclosure

SEC source: 0001140361-25-009829 · form4.xml · derivative · entry 4

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 40,000 shares

Expires 2025-03-20

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 · kind: A total of 36,148 options were exercised and settled in cash, with the net cash equivalent (after the exercise price) used to cover the exercise of an additional 3,852 options. The issuance of Common Stock was finalized on March 20, 2025.

F3 · derivative.exercise_date: The option vested in two equal installments on February 8, 2022 and June 24, 2022.

Read SEC document
March 06, 2025 Filed Mar 21, 2025 13:30 UTC Amendment Anteris Technologies Global Corp. AVR · Entity 5089 Tax withholdingCommon Stock 36,148 $7.89 $285,207.72
Disclosure

SEC source: 0001140361-25-009829 · form4.xml · nonDerivative · entry 2

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 3,852

F1 · ownership.nature: Held by Citibank, N.A. London as custodian for Mr. Seaberg.

Read SEC document
March 06, 2025 Filed Mar 21, 2025 13:30 UTC Amendment Anteris Technologies Global Corp. AVR · Entity 5089 Exercise / conversionCommon Stock 40,000 $7.13 $285,200.00
Disclosure

SEC source: 0001140361-25-009829 · form4.xml · nonDerivative · entry 1

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 40,000

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: A total of 36,148 options were exercised and settled in cash, with the net cash equivalent (after the exercise price) used to cover the exercise of an additional 3,852 options. The issuance of Common Stock was finalized on March 20, 2025.

F1 · ownership.nature: Held by Citibank, N.A. London as custodian for Mr. Seaberg.

Read SEC document
December 16, 2024 Filed Dec 19, 2024 02:14 UTC Anteris Technologies Global Corp. AVR · Entity 5089 GrantStock Option · Derivative 75,000 $0.00 Strike: $14.64 $0.00
Disclosure

SEC source: 0001104659-24-129867 · tm2431370-1_4seq1.xml · derivative · entry 5

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 75,000 shares

Expires 2029-06-19

F2 · derivative.exercise_price: Options are issued in AUD. Exercise prices have been translated into USD using the December 15, 2024 exchange rate, which was approximately A$1.00 to $0.64.

F3 · kind: Legacy awards originally issued by ATL that were assumed by the Issuer pursuant to a scheme of arrangement between ATL and its optionholders under Part 5.1 of the Corporations Act, effective on the Effective Date.

F7 · derivative.exercise_date: The option vests in three equal annual installments beginning on June 19, 2025, subject to the Reporting Person's continued service.

Read SEC document
December 16, 2024 Filed Dec 19, 2024 02:14 UTC Anteris Technologies Global Corp. AVR · Entity 5089 GrantStock Option · Derivative 157,500 $0.00 Strike: $15.28 $0.00
Disclosure

SEC source: 0001104659-24-129867 · tm2431370-1_4seq1.xml · derivative · entry 4

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,500

Underlying: Common Stock · 157,500 shares

Expires 2028-09-15

F2 · derivative.exercise_price: Options are issued in AUD. Exercise prices have been translated into USD using the December 15, 2024 exchange rate, which was approximately A$1.00 to $0.64.

F3 · kind: Legacy awards originally issued by ATL that were assumed by the Issuer pursuant to a scheme of arrangement between ATL and its optionholders under Part 5.1 of the Corporations Act, effective on the Effective Date.

F6 · derivative.exercise_date: The option vests in three equal annual installments beginning on September 15, 2024, subject to the Reporting Person's continued service.

Read SEC document
December 16, 2024 Filed Dec 19, 2024 02:14 UTC Anteris Technologies Global Corp. AVR · Entity 5089 GrantStock Option · Derivative 80,000 $0.00 Strike: $8.25 $0.00
Disclosure

SEC source: 0001104659-24-129867 · tm2431370-1_4seq1.xml · derivative · entry 3

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,000

Underlying: Common Stock · 80,000 shares

Expires 2027-06-13

F2 · derivative.exercise_price: Options are issued in AUD. Exercise prices have been translated into USD using the December 15, 2024 exchange rate, which was approximately A$1.00 to $0.64.

F3 · kind: Legacy awards originally issued by ATL that were assumed by the Issuer pursuant to a scheme of arrangement between ATL and its optionholders under Part 5.1 of the Corporations Act, effective on the Effective Date.

F5 · derivative.exercise_date: The option vests in three equal annual installments beginning on December 31, 2022, subject to the Reporting Person's continued service.

Read SEC document
December 16, 2024 Filed Dec 19, 2024 02:14 UTC Anteris Technologies Global Corp. AVR · Entity 5089 GrantStock Option · Derivative 40,000 $0.00 Strike: $7.13 $0.00
Disclosure

SEC source: 0001104659-24-129867 · tm2431370-1_4seq1.xml · derivative · entry 2

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,000

Underlying: Common Stock · 40,000 shares

Expires 2025-03-20

F2 · derivative.exercise_price: Options are issued in AUD. Exercise prices have been translated into USD using the December 15, 2024 exchange rate, which was approximately A$1.00 to $0.64.

F3 · kind: Legacy awards originally issued by ATL that were assumed by the Issuer pursuant to a scheme of arrangement between ATL and its optionholders under Part 5.1 of the Corporations Act, effective on the Effective Date.

F4 · derivative.exercise_date: The option vested in two equal installments on February 8, 2022 and June 24, 2022.

Read SEC document
December 16, 2024 Filed Dec 19, 2024 02:14 UTC Anteris Technologies Global Corp. AVR · Entity 5089 GrantCommon Stock 15,858 Not disclosed Not disclosed
Disclosure

SEC source: 0001104659-24-129867 · tm2431370-1_4seq1.xml · nonDerivative · entry 1

Seaberg John D · CIK 0001421888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,858

F1 · kind: Received in exchange for an equivalent number of ordinary shares of Anteris Technologies Ltd ("ATL") in connection with a series of reorganization transactions pursuant to which the Issuer received all of the issued and outstanding shares of ATL pursuant to a scheme of arrangement (the "Scheme") under Australian law between ATL and its shareholders under Part 5.1 of the Australian Corporations Act 2001 (Cth) (the "Corporations Act"). On December 16, 2024, the effective date of the Scheme and the closing of the Issuer's U.S. initial public offering (the "Effective Date"), the closing price of the Issuer's common stock was $5.50 per share.

F1 · price: Received in exchange for an equivalent number of ordinary shares of Anteris Technologies Ltd ("ATL") in connection with a series of reorganization transactions pursuant to which the Issuer received all of the issued and outstanding shares of ATL pursuant to a scheme of arrangement (the "Scheme") under Australian law between ATL and its shareholders under Part 5.1 of the Australian Corporations Act 2001 (Cth) (the "Corporations Act"). On December 16, 2024, the effective date of the Scheme and the closing of the Issuer's U.S. initial public offering (the "Effective Date"), the closing price of the Issuer's common stock was $5.50 per share.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.