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person · Reporting owner

Corzo Kathryn Penkus

Disclosed activity across 2 companies

Tapewire entity
73641
SEC CIK
0001884123

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Marker Therapeutics, Inc.MRKR · Entity 7609DirectorOctober 31, 2025November 04, 2025
Matinas BioPharma Holdings, Inc.MTNB · Entity 8443DirectorNovember 01, 2023November 03, 2023

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.

Marker Therapeutics, Inc.

Report date October 31, 2025 · Filed November 04, 2025

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.99 · Expires 2035-10-31Direct147,611 Reported balance After 2025-10-31 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2025-10-31 · Grant · Acquired 147,611 · Balance 147,611

F1: Represents options granted under the Company's 2020 Omnibus Stock Ownership Plan. The shares vest equally over thirty six (36) monthly installments, subject to the Reporting Person's continued service as a director. The option exercise price is the closing price on the date of the grant, October 31, 2025.

Filing footnotes · ownership attribution and instrument terms

F1: Represents options granted under the Company's 2020 Omnibus Stock Ownership Plan. The shares vest equally over thirty six (36) monthly installments, subject to the Reporting Person's continued service as a director. The option exercise price is the closing price on the date of the grant, October 31, 2025.

Matinas BioPharma Holdings, Inc.

Report date November 01, 2023 · Filed November 03, 2023

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.21 · Expires 2033-11-01Direct437,244 Reported balance After 2023-11-01 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2023-11-01 · Grant · Acquired 437,244 · Balance 437,244

F1: The option award was made in accordance with the terms of the Issuer's Amended and Restated 2013 Equity Incentive Plan (the "2013 Plan"). The option vests in equal monthly installments over a period of 12 months commencing on November 1, 2023. The exercise price is based on the closing price for the shares of the Common Stock on the date of grant in accordance with the terms of the 2013 Plan.

Filing footnotes · ownership attribution and instrument terms

F1: The option award was made in accordance with the terms of the Issuer's Amended and Restated 2013 Equity Incentive Plan (the "2013 Plan"). The option vests in equal monthly installments over a period of 12 months commencing on November 1, 2023. The exercise price is based on the closing price for the shares of the Common Stock on the date of grant in accordance with the terms of the 2013 Plan.

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
October 31, 2025 Filed Nov 4, 2025 22:09 UTC Marker Therapeutics, Inc. MRKR · Entity 7609 GrantStock Option (Right to Buy) · Derivative 147,611 $0.00 Strike: $0.99 $0.00
Disclosure

SEC source: 0001884123-25-000010 · primary_doc.xml · derivative · entry 1

Corzo Kathryn Penkus · CIK 0001884123 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 147,611

Underlying: Common Stock · 147,611 shares

Expires 2035-10-31

F1 · derivative.exercise_date: Represents options granted under the Company's 2020 Omnibus Stock Ownership Plan. The shares vest equally over thirty six (36) monthly installments, subject to the Reporting Person's continued service as a director. The option exercise price is the closing price on the date of the grant, October 31, 2025.

Read SEC document
November 01, 2023 Filed Nov 3, 2023 20:49 UTC Matinas BioPharma Holdings, Inc. MTNB · Entity 8443 GrantStock option (right to buy) · Derivative 437,244 $0.00 Strike: $0.21 $0.00
Disclosure

SEC source: 0001493152-23-039338 · ownership.xml · derivative · entry 1

Corzo Kathryn Penkus · CIK 0001884123 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 437,244

Underlying: Common Stock · 437,244 shares

Expires 2033-11-01

F1 · derivative.exercise_date: The option award was made in accordance with the terms of the Issuer's Amended and Restated 2013 Equity Incentive Plan (the "2013 Plan"). The option vests in equal monthly installments over a period of 12 months commencing on November 1, 2023. The exercise price is based on the closing price for the shares of the Common Stock on the date of grant in accordance with the terms of the 2013 Plan.

Read SEC document
November 14, 2022 Filed Nov 17, 2022 02:36 UTC Matinas BioPharma Holdings, Inc. MTNB · Entity 8443 GrantStock option (right to buy) · Derivative 142,657 $0.00 Strike: $0.73 $0.00
Disclosure

SEC source: 0001493152-22-032694 · ownership.xml · derivative · entry 1

Corzo Kathryn Penkus · CIK 0001884123 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 142,657

Underlying: Common Stock · 142,657 shares

Expires 2032-11-14

F1 · derivative.exercise_date: The option award was made in accordance with the terms of the Issuer's Amended and Restated 2013 Equity Incentive Plan (the "2013 Plan"). The option vests in equal monthly installments over a period of 12 months commencing on November 14, 2022. The exercise price is based on the closing price for the shares of the Common Stock on the date of grant in accordance with the terms of the 2013 Plan.

Read SEC document
November 01, 2021 Filed Nov 2, 2021 20:13 UTC Matinas BioPharma Holdings, Inc. MTNB · Entity 8443 GrantStock option (right to buy) · Derivative 181,763 $0.00 Strike: $1.12 $0.00
Disclosure

SEC source: 0001493152-21-026985 · ownership.xml · derivative · entry 1

Corzo Kathryn Penkus · CIK 0001884123 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 181,763

Underlying: Common Stock · 181,763 shares

Expires 2031-11-01

F1 · derivative.exercise_date: The option award was made in accordance with the terms of the Issuer's Amended and Restated 2013 Equity Incentive Plan (the "2013 Plan"). The option vests in equal monthly installments over a period of 36 months commencing on November 30, 2021. The exercise price is based on the closing price for the shares of the Common Stock on the date of grant in accordance with the terms of the 2013 Plan.

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.