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person · Reporting owner

Matuszewski Jason

Disclosed activity across 1 company

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23330
SEC CIK
0001634730

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
BioStem Technologies, Inc.BSEM · Entity 7054Director · Chief Executive Officer · 10% ownerOctober 07, 2026October 09, 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.

BioStem Technologies, Inc.

Report date October 07, 2026 · Filed October 09, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect1,553,551 Reported balance After 2026-10-07 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2026-10-07 · Exercise / conversion · Acquired 250,000 · Balance 1,553,551

F1: The amount corrects the number of shares of common stock held by the Reporting Person, which over-reported a prior vesting of restricted stock units by one share in the Form 3 filed on August 14, 2026 and the Form 4 filed on September 17, 2026 due to an administrative error.

Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $2.00 · Expires 2032-10-24Direct2,000,000 Reported balance After 2026-10-07 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-10-07 · Exercise / conversion · Disposed 250,000 · Balance 2,000,000

F5: These options are fully vested and exercisable.

Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $10.05 · Expires 2035-03-17Direct198,807 Reported balance Holding disclosure · report date 2026-10-07 · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · Balance 198,807

F6: These options vest according to the following schedule: 33% vested on March 17, 2026, the one-year anniversary of the grant date, with the remaining options vesting in equal quarterly installments over the subsequent two year period.

Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $10.05 · Expires 2035-10-13Direct40,427 Reported balance Holding disclosure · report date 2026-10-07 · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · Balance 40,427

F7: These options vest according to the following schedule: 33% will vest on October 13, 2026, the one-year anniversary of the grant date, with the remaining options vesting in equal quarterly installments over the subsequent two year period.

Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $5.50 · Expires 2036-02-11Direct440,529 Reported balance Holding disclosure · report date 2026-10-07 · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · Balance 440,529

F8: These options vest according to the following schedule: 33% will vest on February 11, 2027, the one year anniversary of the grant date, with the remaining options vesting in equal quarterly installments over the subsequent two year period.

Series A-1 Convertible Preferred SharesSEC Table II · derivative / convertible securityDirect100 Reported balance Holding disclosure · report date 2026-10-07 · row 2 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 2 · Balance 100

F2: The Series A-1 Convertible Preferred Shares is convertible in whole into shares of the Issuer's Common Stock on a one-to-one basis at the option of a majority of the holders of Series A-1 Convertible Preferred Shares.

F3: The Series A-1 Convertible Preferred Shares have no expiration date.

F4: Due to an administrative error, the Series A-1 Convertible Preferred Shares were inadvertently omitted from the Reporting Person's Form 3 filed on August 14, 2026.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect33,874 Reported balance Holding disclosure · report date 2026-10-07 · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · Balance 33,874

F9: Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock.

F10: These restricted stock units vest in equal quarterly installments over three year from the grant date (September 15, 2024).

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect99,901 Reported balance Holding disclosure · report date 2026-10-07 · row 8 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 8 · Balance 99,901

F9: Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock.

F11: These restricted stock units vest according to the following schedule: 33% vested on March 17, 2026, the one year anniversary of the grant date, with the remaining units vesting in equal quarterly installments over the subsequent two year period.

F1: The amount corrects the number of shares of common stock held by the Reporting Person, which over-reported a prior vesting of restricted stock units by one share in the Form 3 filed on August 14, 2026 and the Form 4 filed on September 17, 2026 due to an administrative error.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect363,636 Reported balance Holding disclosure · report date 2026-10-07 · row 9 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 9 · Balance 363,636

F9: Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock.

F12: These restricted stock units vest according to the following schedule: 33% will vest on February 11, 2027, the one year anniversary of the grant date, with the remaining units vesting in equal quarterly installments over the subsequent two year period.

Filing footnotes · ownership attribution and instrument terms

F1: The amount corrects the number of shares of common stock held by the Reporting Person, which over-reported a prior vesting of restricted stock units by one share in the Form 3 filed on August 14, 2026 and the Form 4 filed on September 17, 2026 due to an administrative error.

F2: The Series A-1 Convertible Preferred Shares is convertible in whole into shares of the Issuer's Common Stock on a one-to-one basis at the option of a majority of the holders of Series A-1 Convertible Preferred Shares.

F3: The Series A-1 Convertible Preferred Shares have no expiration date.

F4: Due to an administrative error, the Series A-1 Convertible Preferred Shares were inadvertently omitted from the Reporting Person's Form 3 filed on August 14, 2026.

F5: These options are fully vested and exercisable.

F6: These options vest according to the following schedule: 33% vested on March 17, 2026, the one-year anniversary of the grant date, with the remaining options vesting in equal quarterly installments over the subsequent two year period.

F7: These options vest according to the following schedule: 33% will vest on October 13, 2026, the one-year anniversary of the grant date, with the remaining options vesting in equal quarterly installments over the subsequent two year period.

F8: These options vest according to the following schedule: 33% will vest on February 11, 2027, the one year anniversary of the grant date, with the remaining options vesting in equal quarterly installments over the subsequent two year period.

F9: Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock.

F10: These restricted stock units vest in equal quarterly installments over three year from the grant date (September 15, 2024).

F11: These restricted stock units vest according to the following schedule: 33% vested on March 17, 2026, the one year anniversary of the grant date, with the remaining units vesting in equal quarterly installments over the subsequent two year period.

F12: These restricted stock units vest according to the following schedule: 33% will vest on February 11, 2027, the one year anniversary of the grant date, with the remaining units vesting in equal quarterly installments over the subsequent two year period.

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 07, 2026 Filed Oct 9, 2026 20:30 UTC BioStem Technologies, Inc. BSEM · Entity 7054 Exercise / conversionOptions (Right to Buy) · Derivative 250,000 $0.00 Strike: $2.00 $0.00
Disclosure

SEC source: 0001193125-26-419152 · ownership.xml · derivative · entry 3

Matuszewski Jason · CIK 0001634730 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,000,000

Underlying: Common Stock · 250,000 shares

Expires 2032-10-24

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.

F5 · derivative.exercise_date: These options are fully vested and exercisable.

Read SEC document
October 07, 2026 Filed Oct 9, 2026 20:30 UTC BioStem Technologies, Inc. BSEM · Entity 7054 Exercise / conversionCommon Stock 250,000 $2.00 $500,000.00
Disclosure

SEC source: 0001193125-26-419152 · ownership.xml · nonDerivative · entry 1

Matuszewski Jason · CIK 0001634730 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,553,551

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: The amount corrects the number of shares of common stock held by the Reporting Person, which over-reported a prior vesting of restricted stock units by one share in the Form 3 filed on August 14, 2026 and the Form 4 filed on September 17, 2026 due to an administrative error.

Read SEC document
September 17, 2026 Filed Sep 17, 2026 20:30 UTC BioStem Technologies, Inc. BSEM · Entity 7054 Exercise / conversionRestricted Stock Units · Derivative 16,650 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-394398 · ownership.xml · derivative · entry 8

Matuszewski Jason · CIK 0001634730 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,900

Underlying: Common Stock · 16,650 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock.

F7 · derivative.exercise_date: These restricted stock units vest according to the following schedule: 33% vested on March 17, 2026, the one year anniversary of the grant date, with the remaining units vesting in equal quarterly installments over the subsequent two year period.

F7 · derivative.expiration_date: These restricted stock units vest according to the following schedule: 33% vested on March 17, 2026, the one year anniversary of the grant date, with the remaining units vesting in equal quarterly installments over the subsequent two year period.

Read SEC document
September 17, 2026 Filed Sep 17, 2026 20:30 UTC BioStem Technologies, Inc. BSEM · Entity 7054 Exercise / conversionCommon Stock 16,650 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-394398 · ownership.xml · nonDerivative · entry 2

Matuszewski Jason · CIK 0001634730 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,303,552

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 15, 2026 Filed Sep 17, 2026 20:30 UTC BioStem Technologies, Inc. BSEM · Entity 7054 Exercise / conversionRestricted Stock Units · Derivative 8,469 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-394398 · ownership.xml · derivative · entry 7

Matuszewski Jason · CIK 0001634730 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,874

Underlying: Common Stock · 8,469 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.

F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock.

F6 · derivative.exercise_date: These restricted stock units vest quarterly over three years from the grant date (September 15, 2024).

F6 · derivative.expiration_date: These restricted stock units vest quarterly over three years from the grant date (September 15, 2024).

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:30 UTC BioStem Technologies, Inc. BSEM · Entity 7054 Exercise / conversionCommon Stock 8,469 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-394398 · ownership.xml · nonDerivative · entry 1

Matuszewski Jason · CIK 0001634730 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,286,902

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

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