Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Tectonic Therapeutic, Inc.TECX · Entity 5328 | Chief Business Officer | September 25, 2026 | October 03, 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.
Tectonic Therapeutic, Inc.
Report date September 25, 2026 · Filed October 03, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 44,903 |
Reported balance
After 2026-09-25 transaction · row 1
1 source rowRow 1 · 2026-09-25 · Tax withholding · Disposed 411 · Balance 44,903 F1: This transaction reported represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of the restricted stock units granted on September 25, 2025. |
Filing footnotes · ownership attribution and instrument terms
F1: This transaction reported represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of the restricted stock units granted on September 25, 2025.
Transaction history
JSON APIPurchases/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 date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| September 25, 2026 Filed Oct 3, 2026 00:56 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | Tax withholdingCommon Stock | 411 | $23.67 | $9,728.37 |
DisclosureSEC source: 0002023175-26-000009 · form4-10022026_081032.xml · nonDerivative · entry 1 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 44,903 F1 · shares: This transaction reported represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of the restricted stock units granted on September 25, 2025. Read SEC document |
| September 03, 2026 Filed Sep 8, 2026 20:45 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | GrantEmployee Stock Option (Right to Buy) · Derivative | 17,750 | $0.00 Strike: $29.92 | $0.00 |
DisclosureSEC source: 0002023175-26-000007 · form4-09082026_040909.xml · derivative · entry 1 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,750 Underlying: Common Stock · 17,750 shares Expires 2036-09-02 F1 · derivative.exercise_date: 1/8th of the shares subject to the option vest on September 3, 2026 with the remaining shares subject to the option vesting in the following 42 equal monthly installments beginning on October 3, 2026, subject to the Reporting Person's continued service to the Issuer on each such vesting date. Read SEC document |
| March 04, 2026 Filed Mar 5, 2026 17:46 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | GrantEmployee Stock Option (Right to Buy) · Derivative | 17,750 | $0.00 Strike: $27.41 | $0.00 |
DisclosureSEC source: 0002023175-26-000005 · form4-03052026_100314.xml · derivative · entry 2 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,750 Underlying: Common Stock · 17,750 shares Expires 2036-03-03 F2 · derivative.exercise_date: The shares subject to the option vest in 48 equal monthly installments beginning on April 4, 2026, subject to the Reporting Person's continued service to the Issuer on each such vesting date. Read SEC document |
| March 04, 2026 Filed Mar 5, 2026 17:46 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | GrantCommon Stock | 19,500 | $0.00 | $0.00 |
DisclosureSEC source: 0002023175-26-000005 · form4-03052026_100314.xml · nonDerivative · entry 1 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 45,314 F1 · shares: These shares are represented by restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. The shares shall vest in 3 equal annual installments on each of March 4, 2027, March 4, 2028 and March 4, 2029, subject to the Reporting Person's continued service to the Issuer on each such vesting date. Read SEC document |
| February 10, 2026 Filed Feb 12, 2026 16:15 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative | 4,500 | Not disclosed Strike: $2.38 | Not disclosed |
DisclosureSEC source: 0002023175-26-000003 · form4-02122026_040201.xml · derivative · entry 2 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 82,014 Underlying: Common Stock · 4,500 shares Expires 2031-06-27 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: Received in exchange for a stock option to acquire 170,679 shares of Tectonic common stock pursuant to that certain merger, as more specifically described in the Reporting Person's Form 4 filed with the Securities and Exchange Commission on June 24, 2024. https://www.sec.gov/Archives/edgar/data/1681087/000141588924017972/xslF345X05/form4-06242024_080616.xml F1 · derivative.exercise_date: The shares subject to the option vest as to 25% of the shares on March 15, 2022 with the remainder vesting in the following 36 equal monthly installments, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| February 10, 2026 Filed Feb 12, 2026 16:15 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | Exercise / conversionCommon Stock | 4,500 | $2.38 | $10,710.00 |
DisclosureSEC source: 0002023175-26-000003 · form4-02122026_040201.xml · nonDerivative · entry 1 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 25,814 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 04, 2026 Filed Feb 10, 2026 16:10 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | Tax withholdingCommon Stock | 1,619 | $23.22 | $37,593.18 |
DisclosureSEC source: 0002023175-26-000002 · form4-02102026_090237.xml · nonDerivative · entry 1 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 21,314 F1 · shares: This transaction reported represents the withholding of shares by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settlement of the restricted stock units granted on February 4, 2025. Read SEC document |
| September 25, 2025 Filed Sep 29, 2025 17:00 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | GrantEmployee Stock Option (Right to Buy) · Derivative | 7,650 | $0.00 Strike: $14.71 | $0.00 |
DisclosureSEC source: 0002023175-25-000003 · form4-09292025_050908.xml · derivative · entry 2 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,650 Underlying: Common Stock · 7,650 shares Expires 2035-09-24 F2 · derivative.exercise_date: The shares subject to the option vest in 48 equal monthly installments beginning on October 25, 2025, subject to the Reporting Person's continued service to the Issuer on each such vesting date. Read SEC document |
| September 25, 2025 Filed Sep 29, 2025 17:00 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | GrantCommon Stock | 4,210 | $0.00 | $0.00 |
DisclosureSEC source: 0002023175-25-000003 · form4-09292025_050908.xml · nonDerivative · entry 1 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,933 F1 · shares: These shares are represented by restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. The shares shall vest in 3 equal annual installments on each of September 25, 2026, September 25, 2027 and September 25, 2028, subject to the Reporting Person's continued service to the Issuer on each such vesting date. Read SEC document |
| February 04, 2025 Filed Feb 6, 2025 16:05 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | GrantEmployee Stock Option (Right to Buy) · Derivative | 25,496 | $0.00 Strike: $48.01 | $0.00 |
DisclosureSEC source: 0001415889-25-003229 · form4-02062025_040210.xml · derivative · entry 2 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 25,496 Underlying: Common Stock · 25,496 shares Expires 2035-02-03 F2 · derivative.exercise_date: The shares subject to the option vest in 48 equal monthly installments beginning on March 4, 2025, subject to the Reporting Person's continued service to the Issuer on each such vesting date. Read SEC document |
| February 04, 2025 Filed Feb 6, 2025 16:05 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | GrantCommon Stock | 14,023 | $0.00 | $0.00 |
DisclosureSEC source: 0001415889-25-003229 · form4-02062025_040210.xml · nonDerivative · entry 1 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,723 F1 · shares: These shares are represented by restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. The shares shall vest in 3 equal annual installments on each of February 4, 2026, February 4, 2027 and February 4, 2028, subject to the Reporting Person's continued service to the Issuer on each such vesting date. Read SEC document |
| January 28, 2025 Filed Jan 29, 2025 16:05 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative | 2,700 | Not disclosed Strike: $2.38 | Not disclosed |
DisclosureSEC source: 0001415889-25-002262 · form4-01292025_040101.xml · derivative · entry 2 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 86,514 Underlying: Common Stock · 2,700 shares Expires 2031-06-27 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: Received in exchange for a stock option to acquire 170,679 shares of common stock pursuant to that certain merger, as more fully described on the Reporting Person's Form 4 filed with the Securities and Exchange Commission on June 24, 2024. https://www.sec.gov/Archives/edgar/data/1681087/000141588924017972/xslF345X05/form4-06242024_080616.xml F1 · derivative.exercise_date: The shares subject to the option vest as to 25% of the shares on March 15, 2022 with the remainder vesting in the following 36 equal monthly installments, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| January 28, 2025 Filed Jan 29, 2025 16:05 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | Exercise / conversionCommon Stock | 2,700 | $2.38 | $6,426.00 |
DisclosureSEC source: 0001415889-25-002262 · form4-01292025_040101.xml · nonDerivative · entry 1 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,700 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 09, 2024 Filed Dec 11, 2024 16:21 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative | 2,000 | Not disclosed Strike: $2.38 | Not disclosed |
DisclosureSEC source: 0001415889-24-028948 · form4-12112024_091246.xml · derivative · entry 2 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 89,214 Underlying: Common Stock · 2,000 shares Expires 2031-06-27 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: Received in exchange for a stock option to acquire 170,679 shares of common stock pursuant to that certain merger, as more fully described on the Reporting Person's Form 4 filed with the Securities and Exchange Commission on June 24, 2024. https://www.sec.gov/Archives/edgar/data/1681087/000141588924017972/xslF345X05/form4-06242024_080616.xml F1 · derivative.exercise_date: The shares subject to the option vest as to 25% of the shares on March 15, 2022 with the remainder vesting in the following 36 equal monthly installments, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| December 09, 2024 Filed Dec 11, 2024 16:21 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | Exercise / conversionCommon Stock | 2,000 | $2.38 | $4,760.00 |
DisclosureSEC source: 0001415889-24-028948 · form4-12112024_091246.xml · nonDerivative · entry 1 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,000 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. Read SEC document |
| June 20, 2024 Filed Jun 24, 2024 16:25 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | GrantEmployee Stock Option (Right to Buy) · Derivative | 61,600 | $0.00 Strike: $16.80 | $0.00 |
DisclosureSEC source: 0001415889-24-017972 · form4-06242024_080616.xml · derivative · entry 3 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 61,600 Underlying: Common Stock · 61,600 shares Expires 2034-06-19 F6 · derivative.exercise_date: The shares subject to the option vest as to 25% of the shares on June 20, 2025 with the remainder vesting in the following 36 equal monthly installments, subject to the Reporting Person's continued service on each such vesting date. Read SEC document |
| June 20, 2024 Filed Jun 24, 2024 16:25 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | GrantEmployee Stock Option (Right to Buy) · Derivative | 8,016 | Not disclosed Strike: $5.38 | Not disclosed |
DisclosureSEC source: 0001415889-24-017972 · form4-06242024_080616.xml · derivative · entry 2 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 8,016 Underlying: Common Stock · 8,016 shares Expires 2033-11-30 F1 · derivative.exercise_price: Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split. F1 · shares: Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split. F1 · price: Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split. F5 · price: Received in exchange for a stock option to acquire 15,000 shares of Tectonic common stock pursuant to the Merger Agreement. F4 · derivative.exercise_date: The shares subject to the option vest in 48 equal monthly installments beginning on December 1, 2023, subject to the Reporting Person's continued service to the Issuer on each such vesting date F1 · derivative.underlying_shares: Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split. Read SEC document |
| June 20, 2024 Filed Jun 24, 2024 16:25 UTC | Tectonic Therapeutic, Inc. TECX · Entity 5328 | GrantEmployee Stock Option (Right to Buy) · Derivative | 91,214 | Not disclosed Strike: $2.38 | Not disclosed |
DisclosureSEC source: 0001415889-24-017972 · form4-06242024_080616.xml · derivative · entry 1 Schwabish Marc · CIK 0002023175 · Chief Business Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 91,214 Underlying: Common Stock · 91,214 shares Expires 2031-06-27 F1 · derivative.exercise_price: Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split. F1 · shares: Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split. F1 · price: Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split. F3 · price: Received in exchange for a stock option to acquire 170,679 shares of Tectonic common stock pursuant to the Merger Agreement. F2 · derivative.exercise_date: The shares subject to the option vest as to 25% of the shares on March 15, 2022 with the remainder vesting in the following 36 equal monthly installments, subject to the Reporting Person's continued service on each such vesting date. F1 · derivative.underlying_shares: Upon the closing of the Merger, each outstanding option to purchase shares of Tectonic common stock was assumed by the Issuer and converted into an option to purchase the Issuer's common stock, on the same terms and conditions as were applicable to such Tectonic stock option prior to the Merger, as adjusted for the exchange ratio and the reverse stock split. 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.