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Heyburn William A.

Disclosed activity across 1 company

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27198
SEC CIK
0001859732

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Strata Critical Medical, Inc.SRTA · Entity 5512Director · Co-CEO and CFOSeptember 24, 2026September 25, 2026

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.

Strata Critical Medical, Inc.

Report date September 24, 2026 · Filed September 25, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A common stock, $0.0001 par value per shareSEC Table I · non-derivativeDirect1,757,850 Ending reported balance After 2026-09-24 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2026-09-24 · Grant · Acquired 177,858 · Balance 1,856,206

F1: Represents shares that were acquired upon the certification of the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance-based restricted stock units ("PSUs") granted to the Reporting Person on August 29. 2025.

Row 2 · 2026-09-24 · Tax withholding · Disposed 98,356 · Balance 1,757,850

F2: Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of PSUs.

Filing footnotes · ownership attribution and instrument terms

F1: Represents shares that were acquired upon the certification of the Compensation Committee of the Issuer's Board of Directors of the satisfaction of performance criteria underlying an award of performance-based restricted stock units ("PSUs") granted to the Reporting Person on August 29. 2025.

F2: Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of PSUs.

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
January 02, 2024 Filed Jan 3, 2024 21:02 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionStock Option (right to buy) · Derivative 57,686 $0.18 Strike: $0.18 $10,383.48
Disclosure

SEC source: 0001779128-24-000004 · wk-form4_1704315736.xml · derivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 350,000

Underlying: Class A common stock, $0.0001 par value per share · 57,686 shares

Expires 2030-07-28

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.

Read SEC document
January 02, 2024 Filed Jan 3, 2024 21:02 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionClass A common stock, $0.0001 par value per share 57,686 $0.18 $10,383.48
Disclosure

SEC source: 0001779128-24-000004 · wk-form4_1704315736.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,388,310

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.

Read SEC document
December 15, 2023 Filed Dec 15, 2023 23:58 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 6,793 $3.22 $21,863.95
Disclosure

SEC source: 0001779128-23-000138 · wk-form4_1702684729.xml · nonDerivative · entry 3

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,330,624

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.10 to $3.30, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
December 14, 2023 Filed Dec 15, 2023 23:58 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 16,073 $3.20 $51,493.07
Disclosure

SEC source: 0001779128-23-000138 · wk-form4_1702684729.xml · nonDerivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,337,417

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.12 to $3.29, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
December 13, 2023 Filed Dec 15, 2023 23:58 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 14,508 $2.95 $42,773.94
Disclosure

SEC source: 0001779128-23-000138 · wk-form4_1702684729.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,353,490

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.80 to $3.0750, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
October 06, 2023 Filed Oct 6, 2023 23:26 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 14,488 $2.40 $34,740.78
Disclosure

SEC source: 0001779128-23-000110 · wk-form4_1696634755.xml · nonDerivative · entry 3

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,367,998

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.335 to $2.435, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
October 05, 2023 Filed Oct 6, 2023 23:26 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 11,220 $2.41 $27,063.76
Disclosure

SEC source: 0001779128-23-000110 · wk-form4_1696634755.xml · nonDerivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,382,486

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.375 to $2.505, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
October 04, 2023 Filed Oct 6, 2023 23:26 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 13,419 $2.51 $33,691.08
Disclosure

SEC source: 0001779128-23-000110 · wk-form4_1696634755.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,393,706

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.495 to $2.575, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
July 18, 2023 Filed Jul 19, 2023 14:39 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionStock Option (right to buy) · Derivative 33,712 $0.18 Strike: $0.18 $6,068.16
Disclosure

SEC source: 0001779128-23-000070 · wf-form4_168977755288681.xml · derivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 407,686

Underlying: Class A common stock, $0.0001 par value per share · 33,712 shares

Expires 2030-07-28

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.

Read SEC document
July 18, 2023 Filed Jul 19, 2023 14:39 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionClass A common stock, $0.0001 par value per share 33,712 $0.18 $6,068.16
Disclosure

SEC source: 0001779128-23-000070 · wf-form4_168977755288681.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,407,125

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.

Read SEC document
July 10, 2023 Filed Jul 10, 2023 22:48 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 32,774 $3.88 $127,307.33
Disclosure

SEC source: 0001779128-23-000066 · wf-form4_168902932044553.xml · nonDerivative · entry 3

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,373,413

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.81 to $3.95, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
July 07, 2023 Filed Jul 10, 2023 22:48 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 25,371 $3.82 $96,962.89
Disclosure

SEC source: 0001779128-23-000066 · wf-form4_168902932044553.xml · nonDerivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,406,187

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.65 to $3.92, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
July 06, 2023 Filed Jul 10, 2023 22:48 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 25,652 $3.75 $96,223.22
Disclosure

SEC source: 0001779128-23-000066 · wf-form4_168902932044553.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,431,558

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.605 to $3.88, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
April 10, 2023 Filed Apr 11, 2023 21:10 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 19,159 $2.83 $54,287.03
Disclosure

SEC source: 0001779128-23-000040 · wf-form4_168124739543748.xml · nonDerivative · entry 3

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,457,210

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.805 to $2.935, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
April 06, 2023 Filed Apr 11, 2023 21:10 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 9,727 $2.92 $28,357.12
Disclosure

SEC source: 0001779128-23-000040 · wf-form4_168124739543748.xml · nonDerivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,476,369

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.87 to $3.01, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
April 05, 2023 Filed Apr 11, 2023 21:10 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 12,627 $2.98 $37,603.21
Disclosure

SEC source: 0001779128-23-000040 · wf-form4_168124739543748.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,486,096

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.825 to $3.18, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
February 01, 2023 Filed Feb 2, 2023 20:38 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionStock Option (right to buy) · Derivative 49,451 $0.18 Strike: $0.18 $8,901.18
Disclosure

SEC source: 0001779128-23-000017 · wf-form4_167537030000142.xml · derivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A common stock, $0.0001 par value per share · 49,451 shares

Expires 2029-07-11

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.

Read SEC document
February 01, 2023 Filed Feb 2, 2023 20:38 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionClass A common stock, $0.0001 par value per share 49,451 $0.18 $8,901.18
Disclosure

SEC source: 0001779128-23-000017 · wf-form4_167537030000142.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,498,723

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.

Read SEC document
January 09, 2023 Filed Jan 12, 2023 15:31 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 4,306 $3.47 $14,959.04
Disclosure

SEC source: 0001779128-23-000015 · wf-form4_167353746919119.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,449,272

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.42 to $3.53. 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 ranges set forth in this footnote to this Form 4.

Read SEC document
January 04, 2023 Filed Jan 6, 2023 02:28 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionStock Option (right to buy) · Derivative 56,238 $0.18 Strike: $0.18 $10,122.84
Disclosure

SEC source: 0001779128-23-000001 · wf-form4_167297210648396.xml · derivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,451

Underlying: Class A common stock, $0.0001 par value per share · 56,238 shares

Expires 2029-07-11

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.

Read SEC document
January 04, 2023 Filed Jan 6, 2023 02:28 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionClass A common stock, $0.0001 par value per share 56,238 $0.18 $10,122.84
Disclosure

SEC source: 0001779128-23-000001 · wf-form4_167297210648396.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,453,578

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.

Read SEC document
November 08, 2022 Filed Nov 14, 2022 15:04 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 GrantClass A common stock, $0.0001 par value per share 916,323 $0.00 $0.00
Disclosure

SEC source: 0001779128-22-000122 · wf-form4_166843825828837.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,397,340

F1 · shares: Represents a grant of Restricted Stock Units ("RSUs"), which will be settled in shares of the Issuer's common stock upon vesting. 6.25% (rounded down to the nearest whole number) will vest on the first day of every calendar quarter following January 1, 2023 (with the first tranche to vest on April 1, 2023), with any remaining unvested RSUs to vest on January 1, 2027, subject to the Reporting Person's continued service to the Issuer.

Read SEC document
October 06, 2022 Filed Oct 11, 2022 14:17 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 SaleClass A common stock, $0.0001 par value per share 3,744 $3.97 $14,865.93
Disclosure

SEC source: 0001779128-22-000103 · wf-form4_166549781558335.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 481,017

F1 · shares: Represents shares automatically sold to cover tax withholding obligations associated with the vesting of a restricted stock unit award.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.97 to $3.9986, 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 ranges set forth in this footnote to this Form 4.

Read SEC document
July 15, 2022 Filed Aug 8, 2022 14:26 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Tax withholdingClass A common stock, $0.0001 par value per share 3,677 $4.41 $16,215.57
Disclosure

SEC source: 0001779128-22-000072 · wf-form4_165996878370944.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 484,761

Read SEC document
April 05, 2022 Filed Apr 6, 2022 14:35 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Tax withholdingClass A common stock, par value $0.0001 per share 3,866 $8.60 $33,247.60
Disclosure

SEC source: 0001779128-22-000028 · wf-form4_164925569829924.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 488,438

Read SEC document
January 31, 2022 Filed Feb 1, 2022 21:20 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionStock Option (right to buy) · Derivative 70,000 $0.18 Strike: $0.18 $12,600.00
Disclosure

SEC source: 0001779128-22-000002 · wf-form4_164375038434093.xml · derivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 105,689

Underlying: Class A common stock, par value $0.0001 per share · 70,000 shares

Expires 2029-07-11

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.

Read SEC document
January 31, 2022 Filed Feb 1, 2022 21:20 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionClass A common stock, par value $0.0001 per share 70,000 $0.18 $12,600.00
Disclosure

SEC source: 0001779128-22-000002 · wf-form4_164375038434093.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 492,304

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.

Read SEC document
December 16, 2021 Filed Dec 20, 2021 16:40 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 GrantClass A common stock, par value $0.0001 per share 106,371 $0.00 $0.00
Disclosure

SEC source: 0001779128-21-000021 · wf-form4_164001841480227.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 422,304

F1 · shares: Represents a grant of Restricted Stock Units ("RSUs"), which will be settled in shares of the Issuer's common stock upon vesting. 6.25% (rounded down to the nearest whole number) will vest every three calendar months from January 1,2022 (with the first tranche to vest on April 1, 2022), with any remaining unvested Restricted Stock Units to vest on January 1, 2026, subject to the Reporting Person's continued service to the Issuer.

Read SEC document
December 14, 2021 Filed Dec 16, 2021 23:26 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionStock Option (right to buy) · Derivative 6,312 $0.18 Strike: $0.18 $1,136.16
Disclosure

SEC source: 0001779128-21-000011 · wf-form4_163969718553035.xml · derivative · entry 5

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,377

Underlying: Class A common stock, par value $0.0001 per share · 6,312 shares

Expires 2028-11-16

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.

Read SEC document
December 14, 2021 Filed Dec 16, 2021 23:26 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionStock Option (right to buy) · Derivative 13,688 $0.18 Strike: $0.18 $2,463.84
Disclosure

SEC source: 0001779128-21-000011 · wf-form4_163969718553035.xml · derivative · entry 4

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A common stock, par value $0.0001 per share · 13,688 shares

Expires 2028-11-16

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.

Read SEC document
December 14, 2021 Filed Dec 16, 2021 23:26 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionClass A common stock, par value $0.0001 per share 6,312 $0.18 $1,136.16
Disclosure

SEC source: 0001779128-21-000011 · wf-form4_163969718553035.xml · nonDerivative · entry 3

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 315,933

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.

Read SEC document
December 14, 2021 Filed Dec 16, 2021 23:26 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionClass A common stock, par value $0.0001 per share 13,688 $0.18 $2,463.84
Disclosure

SEC source: 0001779128-21-000011 · wf-form4_163969718553035.xml · nonDerivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 309,621

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.

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December 14, 2021 Filed Dec 16, 2021 23:26 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Tax withholdingClass A common stock, $0.0001 par value per share 125,320 $8.38 $1,050,181.60
Disclosure

SEC source: 0001779128-21-000011 · wf-form4_163969718553035.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 295,933

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September 16, 2021 Filed Sep 20, 2021 21:05 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionStock Option (right to buy) · Derivative 5,000 $0.00 Strike: $0.18 $0.00
Disclosure

SEC source: 0001062993-21-008792 · form4.xml · derivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,688

Underlying: Class A common stock, par value $0.0001 per share · 5,000 shares

Expires 2028-11-16

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.

Read SEC document
September 16, 2021 Filed Sep 20, 2021 21:05 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionClass A common stock, $0.0001 par value per share 5,000 $0.18 $900.00
Disclosure

SEC source: 0001062993-21-008792 · form4.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 421,253

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.

Read SEC document
August 16, 2021 Filed Aug 17, 2021 22:02 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionStock Option (right to buy) · Derivative 75,000 $0.00 Strike: $0.18 $0.00
Disclosure

SEC source: 0001062993-21-007691 · form4.xml · derivative · entry 3

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,689

Underlying: Class A common stock, par value $0.0001 per share · 75,000 shares

Expires 2028-11-16

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.

Read SEC document
August 16, 2021 Filed Aug 17, 2021 22:02 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 Exercise / conversionClass A common stock, $0.0001 par value per share 75,000 $0.18 $13,500.00
Disclosure

SEC source: 0001062993-21-007691 · form4.xml · nonDerivative · entry 2

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 416,253

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.

Read SEC document
August 13, 2021 Filed Aug 17, 2021 22:02 UTC Strata Critical Medical, Inc. BLDE · Entity 5512 GrantClass A common stock, $0.0001 par value per share 122,851 $0.00 $0.00
Disclosure

SEC source: 0001062993-21-007691 · form4.xml · nonDerivative · entry 1

Heyburn William A. · CIK 0001859732 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 341,253

F1 · shares: Represents a grant of Restricted Stock Units ("RSUs"), which will be settled in shares of the Issuer's common stock upon vesting. 66.67% of the RSUs will vest on July 1, 2023, and the remaining RSUs will vest on July 1, 2024, subject to the Reporting Person's continued service to the Issuer.

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