organization · Reporting owner

SR ONE CAPITAL MANAGEMENT, LLC

Disclosed activity across 7 companies

Tapewire entity: 48340
SEC CIK: 0001853723

Reported relationships

Latest disclosed role at each company.

Company	Last reported as	Report date	Published
ADARx Pharmaceuticals, Inc.ADRX · Entity 183937	10% owner	September 24, 2026	September 24, 2026
Design Therapeutics, Inc.DSGN · Entity 4991	10% owner	December 16, 2022	December 20, 2022

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.

ADARx Pharmaceuticals, Inc.

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

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Series B Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 2	Not disclosed	Reported balance Holding disclosure · report date 2026-09-24 · row 1 Instrument identity requires review; Table II rows are not merged. 1 source row Row 1 · Balance Not disclosed F1: Each share of Series B Preferred Stock, Series B-1 Preferred Stock and Series C Preferred Stock (collectively, the "Preferred Stock") will automatically convert on a 1-for-1.1717 basis into shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock has no expiration date. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series B-1 Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 2	Not disclosed	Reported balance Holding disclosure · report date 2026-09-24 · row 2 Instrument identity requires review; Table II rows are not merged. 1 source row Row 2 · Balance Not disclosed F1: Each share of Series B Preferred Stock, Series B-1 Preferred Stock and Series C Preferred Stock (collectively, the "Preferred Stock") will automatically convert on a 1-for-1.1717 basis into shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock has no expiration date. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series C Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 2	Not disclosed	Reported balance Holding disclosure · report date 2026-09-24 · row 3 Instrument identity requires review; Table II rows are not merged. 1 source row Row 3 · Balance Not disclosed F1: Each share of Series B Preferred Stock, Series B-1 Preferred Stock and Series C Preferred Stock (collectively, the "Preferred Stock") will automatically convert on a 1-for-1.1717 basis into shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock has no expiration date. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series C Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 3	Not disclosed	Reported balance Holding disclosure · report date 2026-09-24 · row 4 Instrument identity requires review; Table II rows are not merged. 1 source row Row 4 · Balance Not disclosed F1: Each share of Series B Preferred Stock, Series B-1 Preferred Stock and Series C Preferred Stock (collectively, the "Preferred Stock") will automatically convert on a 1-for-1.1717 basis into shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock has no expiration date. F3: The securities are directly held by SR One Capital Opportunities Fund I, LP ("SR One Opportunities Fund I"). SR One Capital Opportunities Partners I, LP ("SR One Opportunities Partners I") is the sole general partner of SR One Opportunities Fund I, and SR One Capital Management is the sole general partner of SR One Opportunities Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Opportunities Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series B Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 4	Not disclosed	Reported balance Holding disclosure · report date 2026-09-24 · row 5 Instrument identity requires review; Table II rows are not merged. 1 source row Row 5 · Balance Not disclosed F1: Each share of Series B Preferred Stock, Series B-1 Preferred Stock and Series C Preferred Stock (collectively, the "Preferred Stock") will automatically convert on a 1-for-1.1717 basis into shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock has no expiration date. F4: The securities are directly held by SR One Co-Invest III, LLC ("SR One Co-Invest"). SR One Co-Invest III Manager LLC ("SR One Co-Invest Manager") is the managing member of SR One-Co-Invest, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series B-1 Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 4	Not disclosed	Reported balance Holding disclosure · report date 2026-09-24 · row 6 Instrument identity requires review; Table II rows are not merged. 1 source row Row 6 · Balance Not disclosed F1: Each share of Series B Preferred Stock, Series B-1 Preferred Stock and Series C Preferred Stock (collectively, the "Preferred Stock") will automatically convert on a 1-for-1.1717 basis into shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock has no expiration date. F4: The securities are directly held by SR One Co-Invest III, LLC ("SR One Co-Invest"). SR One Co-Invest III Manager LLC ("SR One Co-Invest Manager") is the managing member of SR One-Co-Invest, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Each share of Series B Preferred Stock, Series B-1 Preferred Stock and Series C Preferred Stock (collectively, the "Preferred Stock") will automatically convert on a 1-for-1.1717 basis into shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock has no expiration date.

F3: The securities are directly held by SR One Capital Opportunities Fund I, LP ("SR One Opportunities Fund I"). SR One Capital Opportunities Partners I, LP ("SR One Opportunities Partners I") is the sole general partner of SR One Opportunities Fund I, and SR One Capital Management is the sole general partner of SR One Opportunities Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Opportunities Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

F4: The securities are directly held by SR One Co-Invest III, LLC ("SR One Co-Invest"). SR One Co-Invest III Manager LLC ("SR One Co-Invest Manager") is the managing member of SR One-Co-Invest, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

Design Therapeutics, Inc.

Report date December 16, 2022 · Filed December 20, 2022

Jointly reported with SR One Capital Fund I Aggregator LP, SR ONE CAPITAL PARTNERS I, LP

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	Direct	6,526,476	Last balance in matching sequence After 2022-12-20 transaction · row 3 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 3 source rows Row 1 · 2022-12-16 · Purchase · Acquired 500,000 · Balance 6,126,476 F1: The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $7.90 to $8.76 per share, inclusive. The Reporting Persons undertake 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 range set forth in this footnote. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Indirect Reporting Persons"). The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Indirect Reporting Persons have no pecuniary interest, and this report shall not be deemed an admission that the Indirect Reporting Persons are the beneficial owners of such securities for Section 16 or any other purpose. Row 2 · 2022-12-19 · Purchase · Acquired 360,000 · Balance 6,486,476 F3: The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $8.25 to $8.90 per share, inclusive. The Reporting Persons undertake 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 range set forth in this footnote. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Indirect Reporting Persons"). The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Indirect Reporting Persons have no pecuniary interest, and this report shall not be deemed an admission that the Indirect Reporting Persons are the beneficial owners of such securities for Section 16 or any other purpose. Row 3 · 2022-12-20 · Purchase · Acquired 40,000 · Balance 6,526,476 F4: The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $7.86 to $8.45 per share, inclusive. The Reporting Persons undertake 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 range set forth in this footnote. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Indirect Reporting Persons"). The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Indirect Reporting Persons have no pecuniary interest, and this report shall not be deemed an admission that the Indirect Reporting Persons are the beneficial owners of such securities for Section 16 or any other purpose.

Filing footnotes · ownership attribution and instrument terms

F1: The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $7.90 to $8.76 per share, inclusive. The Reporting Persons undertake 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 range set forth in this footnote.

F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Indirect Reporting Persons"). The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Indirect Reporting Persons have no pecuniary interest, and this report shall not be deemed an admission that the Indirect Reporting Persons are the beneficial owners of such securities for Section 16 or any other purpose.

F3: The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $8.25 to $8.90 per share, inclusive. The Reporting Persons undertake 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 range set forth in this footnote.

F4: The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $7.86 to $8.45 per share, inclusive. The Reporting Persons undertake 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 range set forth in this footnote.

Past disclosures · reporting ended (5)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Arcellx, Inc.

Report date May 11, 2023 · Filed May 15, 2023

Jointly reported with SR One Capital Fund I Aggregator LP, SR ONE CAPITAL PARTNERS I, LP, George Simeon, SR One Co-Invest II, LLC, SR One Co-Invest II Manager, LLC

Section 16 reporting ended · disclosed 2023-05-15. Current position is not established by this disclosure.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee Note 2	2,828,394	Last balance in matching sequence After 2023-05-11 transaction · row 3 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 2 source rows Row 1 · 2023-05-11 · Sale · Disposed 631,932 · Balance 2,834,879 F1: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.00 to $45.745 per share, 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 (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Fund I Indirect Reporting Persons"). The Fund I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Fund I Indirect Reporting Persons have no pecuniary interest. Row 3 · 2023-05-11 · Sale · Disposed 6,485 · Balance 2,828,394 F4: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.00 to $46.56 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Fund I Indirect Reporting Persons"). The Fund I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Fund I Indirect Reporting Persons have no pecuniary interest.
Common StockSEC Table I · non-derivative	IndirectSee Note 3	1,658,780	Last balance in matching sequence After 2023-05-11 transaction · row 4 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 2 source rows Row 2 · 2023-05-11 · Sale · Disposed 370,612 · Balance 1,662,584 F1: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.00 to $45.745 per share, 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 (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F3: The securities are directly held by SR One Co-Invest II, LLC ("SR One Co-Invest II"). SR One Co-Invest II Manager, LLC ("SR One Co-Invest II Manager") is the managing member of SR One Co-Invest II and SR One Capital Management is the managing member of SR One Co-Invest II Manager. Dr. George is the managing member of SR One Capital Management (SR One Co-Invest II Manager, SR One Capital Management, and Dr. George together, the "Co-Invest II Indirect Reporting Persons"). The Co-Invest II Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 or otherwise of such portion of the securities held by SR One Co-Invest II in which the Co-Invest II Indirect Reporting Persons have no pecuniary interest. Row 4 · 2023-05-11 · Sale · Disposed 3,804 · Balance 1,658,780 F4: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.00 to $46.56 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F3: The securities are directly held by SR One Co-Invest II, LLC ("SR One Co-Invest II"). SR One Co-Invest II Manager, LLC ("SR One Co-Invest II Manager") is the managing member of SR One Co-Invest II and SR One Capital Management is the managing member of SR One Co-Invest II Manager. Dr. George is the managing member of SR One Capital Management (SR One Co-Invest II Manager, SR One Capital Management, and Dr. George together, the "Co-Invest II Indirect Reporting Persons"). The Co-Invest II Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 or otherwise of such portion of the securities held by SR One Co-Invest II in which the Co-Invest II Indirect Reporting Persons have no pecuniary interest.

Filing footnotes · ownership attribution and instrument terms

F1: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.00 to $45.745 per share, 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 (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Fund I Indirect Reporting Persons"). The Fund I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Fund I Indirect Reporting Persons have no pecuniary interest.

F3: The securities are directly held by SR One Co-Invest II, LLC ("SR One Co-Invest II"). SR One Co-Invest II Manager, LLC ("SR One Co-Invest II Manager") is the managing member of SR One Co-Invest II and SR One Capital Management is the managing member of SR One Co-Invest II Manager. Dr. George is the managing member of SR One Capital Management (SR One Co-Invest II Manager, SR One Capital Management, and Dr. George together, the "Co-Invest II Indirect Reporting Persons"). The Co-Invest II Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 or otherwise of such portion of the securities held by SR One Co-Invest II in which the Co-Invest II Indirect Reporting Persons have no pecuniary interest.

F4: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.00 to $46.56 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Avalyn Pharma Inc.

Report date May 01, 2026 · Filed May 01, 2026

Jointly reported with George Simeon

Section 16 reporting ended · disclosed 2026-05-01. Current position is not established by this disclosure.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee Note 2	2,186,562	Last balance in matching sequence After 2026-05-01 transaction · row 3 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 3 source rows Row 1 · 2026-05-01 · Conversion · Acquired 1,419,298 · Balance 1,419,298 F1: On May 1, 2026, each share of Series C-1 Convertible Preferred Stock (the "Series C-1 Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series C-1 Preferred Stock had no expiration date. F2: The reported securities are held directly by SR One Capital Fund II Aggregator, LP ("SR One Fund II Aggregator"). SR One Capital Partners II, LP ("SR One Partners II") is the general partner of SR One Fund II, and SR One Capital Management, LLC ("SR One Capital Management") is the general partner of SR One Partners II. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners II, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 2 · 2026-05-01 · Conversion · Acquired 489,486 · Balance 1,908,784 F3: On May 1, 2026, each share of Series D Convertible Preferred Stock (the "Series D Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series D Preferred Stock had no expiration date. F2: The reported securities are held directly by SR One Capital Fund II Aggregator, LP ("SR One Fund II Aggregator"). SR One Capital Partners II, LP ("SR One Partners II") is the general partner of SR One Fund II, and SR One Capital Management, LLC ("SR One Capital Management") is the general partner of SR One Partners II. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners II, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 3 · 2026-05-01 · Purchase · Acquired 277,778 · Balance 2,186,562 F2: The reported securities are held directly by SR One Capital Fund II Aggregator, LP ("SR One Fund II Aggregator"). SR One Capital Partners II, LP ("SR One Partners II") is the general partner of SR One Fund II, and SR One Capital Management, LLC ("SR One Capital Management") is the general partner of SR One Partners II. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners II, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee Note 4	1,122,087	Last balance in matching sequence After 2026-05-01 transaction · row 6 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 3 source rows Row 4 · 2026-05-01 · Conversion · Acquired 354,824 · Balance 354,824 F1: On May 1, 2026, each share of Series C-1 Convertible Preferred Stock (the "Series C-1 Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series C-1 Preferred Stock had no expiration date. F4: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 5 · 2026-05-01 · Conversion · Acquired 489,486 · Balance 844,310 F3: On May 1, 2026, each share of Series D Convertible Preferred Stock (the "Series D Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series D Preferred Stock had no expiration date. F4: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 6 · 2026-05-01 · Purchase · Acquired 277,777 · Balance 1,122,087 F4: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series C-1 Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 2	0	Reported balance After 2026-05-01 transaction · row 7 Instrument identity requires review; Table II rows are not merged. 1 source row Row 7 · 2026-05-01 · Conversion · Disposed 27,309,719 · Balance 0 F1: On May 1, 2026, each share of Series C-1 Convertible Preferred Stock (the "Series C-1 Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series C-1 Preferred Stock had no expiration date. F2: The reported securities are held directly by SR One Capital Fund II Aggregator, LP ("SR One Fund II Aggregator"). SR One Capital Partners II, LP ("SR One Partners II") is the general partner of SR One Fund II, and SR One Capital Management, LLC ("SR One Capital Management") is the general partner of SR One Partners II. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners II, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series D Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 2	0	Reported balance After 2026-05-01 transaction · row 8 Instrument identity requires review; Table II rows are not merged. 1 source row Row 8 · 2026-05-01 · Conversion · Disposed 9,418,561 · Balance 0 F3: On May 1, 2026, each share of Series D Convertible Preferred Stock (the "Series D Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series D Preferred Stock had no expiration date. F2: The reported securities are held directly by SR One Capital Fund II Aggregator, LP ("SR One Fund II Aggregator"). SR One Capital Partners II, LP ("SR One Partners II") is the general partner of SR One Fund II, and SR One Capital Management, LLC ("SR One Capital Management") is the general partner of SR One Partners II. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners II, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series C-1 Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 4	0	Reported balance After 2026-05-01 transaction · row 9 Instrument identity requires review; Table II rows are not merged. 1 source row Row 9 · 2026-05-01 · Conversion · Disposed 6,827,429 · Balance 0 F1: On May 1, 2026, each share of Series C-1 Convertible Preferred Stock (the "Series C-1 Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series C-1 Preferred Stock had no expiration date. F4: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series D Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 4	0	Reported balance After 2026-05-01 transaction · row 10 Instrument identity requires review; Table II rows are not merged. 1 source row Row 10 · 2026-05-01 · Conversion · Disposed 9,418,560 · Balance 0 F3: On May 1, 2026, each share of Series D Convertible Preferred Stock (the "Series D Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series D Preferred Stock had no expiration date. F4: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: On May 1, 2026, each share of Series C-1 Convertible Preferred Stock (the "Series C-1 Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series C-1 Preferred Stock had no expiration date.

F2: The reported securities are held directly by SR One Capital Fund II Aggregator, LP ("SR One Fund II Aggregator"). SR One Capital Partners II, LP ("SR One Partners II") is the general partner of SR One Fund II, and SR One Capital Management, LLC ("SR One Capital Management") is the general partner of SR One Partners II. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners II, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

F3: On May 1, 2026, each share of Series D Convertible Preferred Stock (the "Series D Preferred Stock") automatically converted into shares of Common Stock on a one-for-19.2417 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The Series D Preferred Stock had no expiration date.

F4: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

Odyssey Therapeutics, Inc.

Report date May 11, 2026 · Filed May 12, 2026

Jointly reported with George Simeon

Section 16 reporting ended · disclosed 2026-05-12. Current position is not established by this disclosure.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee Note 2	1,831,383	Last balance in matching sequence After 2026-05-11 transaction · row 8 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 8 source rows Row 1 · 2026-05-11 · Conversion · Acquired 474,048 · Balance 474,048 F1: The Series A Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 2 · 2026-05-11 · Conversion · Acquired 139,366 · Balance 613,414 F3: The Series A-2 Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.3268 basis for no additional consideration. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 3 · 2026-05-11 · Conversion · Acquired 59,692 · Balance 673,106 F4: The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 4 · 2026-05-11 · Conversion · Acquired 61,762 · Balance 734,868 F5: The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 5 · 2026-05-11 · Conversion · Acquired 683,817 · Balance 1,418,685 F6: The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 6 · 2026-05-11 · Other · Acquired 191,541 · Balance 1,610,226 F7: The warrants to purchase shares of common stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 7 · 2026-05-11 · Sale · Disposed 1,065 · Balance 1,609,161 F7: The warrants to purchase shares of common stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. F8: Pursuant to the terms of the warrants, the Issuer withheld 1,065 warrant shares to pay the exercise price in connection with the net exercise. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 8 · 2026-05-11 · Purchase · Acquired 222,222 · Balance 1,831,383 F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee Note 9	374,335	Last balance in matching sequence After 2026-05-11 transaction · row 10 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 2 source rows Row 9 · 2026-05-11 · Conversion · Acquired 118,512 · Balance 118,512 F1: The Series A Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F9: The securities are directly held by SR One Co-Invest IV, LLC ("SR One Co-Invest IV"). SR One Co-Invest IV Manager, LLC ("SR One Co-Invest Manager") is the managing member of SR One-Co-Invest IV, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 10 · 2026-05-11 · Conversion · Acquired 255,823 · Balance 374,335 F4: The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. F9: The securities are directly held by SR One Co-Invest IV, LLC ("SR One Co-Invest IV"). SR One Co-Invest IV Manager, LLC ("SR One Co-Invest Manager") is the managing member of SR One-Co-Invest IV, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee Note 10	574,314	Last balance in matching sequence After 2026-05-11 transaction · row 16 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 6 source rows Row 11 · 2026-05-11 · Conversion · Acquired 204,658 · Balance 204,658 F4: The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 12 · 2026-05-11 · Conversion · Acquired 20,582 · Balance 225,240 F5: The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 13 · 2026-05-11 · Conversion · Acquired 166,168 · Balance 391,408 F6: The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 14 · 2026-05-11 · Other · Acquired 49,850 · Balance 441,258 F7: The warrants to purchase shares of common stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 15 · 2026-05-11 · Sale · Disposed 277 · Balance 440,981 F7: The warrants to purchase shares of common stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. F11: Pursuant to the terms of the warrants, the Issuer withheld 277 warrant shares to pay the exercise price in connection with the net exercise. F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 16 · 2026-05-11 · Purchase · Acquired 133,333 · Balance 574,314 F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee Note 12	1,014,851	Last balance in matching sequence After 2026-05-11 transaction · row 21 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 5 source rows Row 17 · 2026-05-11 · Conversion · Acquired 463,106 · Balance 463,106 F5: The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F12: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 18 · 2026-05-11 · Conversion · Acquired 273,527 · Balance 736,633 F6: The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F12: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 19 · 2026-05-11 · Other · Acquired 78,656 · Balance 815,289 F7: The warrants to purchase shares of common stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. F12: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 20 · 2026-05-11 · Sale · Disposed 438 · Balance 814,851 F7: The warrants to purchase shares of common stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. F13: Pursuant to the terms of the warrants, the Issuer withheld 438 warrant shares to pay the exercise price in connection with the net exercise. F12: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Row 21 · 2026-05-11 · Purchase · Acquired 200,000 · Balance 1,014,851 F12: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series A Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 2	0	Reported balance After 2026-05-11 transaction · row 22 Instrument identity requires review; Table II rows are not merged. 1 source row Row 22 · 2026-05-11 · Conversion · Disposed 4,606,320 · Balance 0 F1: The Series A Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series A-2 Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 2	0	Reported balance After 2026-05-11 transaction · row 23 Instrument identity requires review; Table II rows are not merged. 1 source row Row 23 · 2026-05-11 · Conversion · Disposed 1,299,842 · Balance 0 F3: The Series A-2 Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.3268 basis for no additional consideration. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series B Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 2	0	Reported balance After 2026-05-11 transaction · row 24 Instrument identity requires review; Table II rows are not merged. 1 source row Row 24 · 2026-05-11 · Conversion · Disposed 544,162 · Balance 0 F4: The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series C Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 2	0	Reported balance After 2026-05-11 transaction · row 25 Instrument identity requires review; Table II rows are not merged. 1 source row Row 25 · 2026-05-11 · Conversion · Disposed 600,142 · Balance 0 F5: The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series D Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 2	0	Reported balance After 2026-05-11 transaction · row 26 Instrument identity requires review; Table II rows are not merged. 1 source row Row 26 · 2026-05-11 · Conversion · Disposed 6,644,650 · Balance 0 F6: The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series D Warrants (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.10	IndirectSee Note 2	0	Reported balance After 2026-05-11 transaction · row 27 Instrument identity requires review; Table II rows are not merged. 1 source row Row 27 · 2026-05-11 · Other · Disposed 1,861,211 · Balance 0 F7: The warrants to purchase shares of common stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Capital Partners I, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series A Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 9	0	Reported balance After 2026-05-11 transaction · row 28 Instrument identity requires review; Table II rows are not merged. 1 source row Row 28 · 2026-05-11 · Conversion · Disposed 1,151,580 · Balance 0 F1: The Series A Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F9: The securities are directly held by SR One Co-Invest IV, LLC ("SR One Co-Invest IV"). SR One Co-Invest IV Manager, LLC ("SR One Co-Invest Manager") is the managing member of SR One-Co-Invest IV, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series B Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 9	0	Reported balance After 2026-05-11 transaction · row 29 Instrument identity requires review; Table II rows are not merged. 1 source row Row 29 · 2026-05-11 · Conversion · Disposed 2,374,981 · Balance 0 F4: The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. F9: The securities are directly held by SR One Co-Invest IV, LLC ("SR One Co-Invest IV"). SR One Co-Invest IV Manager, LLC ("SR One Co-Invest Manager") is the managing member of SR One-Co-Invest IV, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series B Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 10	0	Reported balance After 2026-05-11 transaction · row 30 Instrument identity requires review; Table II rows are not merged. 1 source row Row 30 · 2026-05-11 · Conversion · Disposed 1,899,984 · Balance 0 F4: The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration. F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series C Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 10	0	Reported balance After 2026-05-11 transaction · row 31 Instrument identity requires review; Table II rows are not merged. 1 source row Row 31 · 2026-05-11 · Conversion · Disposed 200,000 · Balance 0 F5: The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series D Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 10	0	Reported balance After 2026-05-11 transaction · row 32 Instrument identity requires review; Table II rows are not merged. 1 source row Row 32 · 2026-05-11 · Conversion · Disposed 1,614,650 · Balance 0 F6: The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series D Warrants (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.10	IndirectSee Note 10	0	Reported balance After 2026-05-11 transaction · row 33 Instrument identity requires review; Table II rows are not merged. 1 source row Row 33 · 2026-05-11 · Other · Disposed 484,395 · Balance 0 F7: The warrants to purchase shares of common stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series C Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 12	0	Reported balance After 2026-05-11 transaction · row 34 Instrument identity requires review; Table II rows are not merged. 1 source row Row 34 · 2026-05-11 · Conversion · Disposed 4,500,000 · Balance 0 F5: The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F12: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series D Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Note 12	0	Reported balance After 2026-05-11 transaction · row 35 Instrument identity requires review; Table II rows are not merged. 1 source row Row 35 · 2026-05-11 · Conversion · Disposed 2,657,860 · Balance 0 F6: The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration. F12: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Series D Warrants (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $0.10	IndirectSee Note 12	0	Reported balance After 2026-05-11 transaction · row 36 Instrument identity requires review; Table II rows are not merged. 1 source row Row 36 · 2026-05-11 · Other · Disposed 764,312 · Balance 0 F7: The warrants to purchase shares of common stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis. F12: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: The Series A Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration.

F3: The Series A-2 Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.3268 basis for no additional consideration.

F4: The Series B Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.2837 basis for no additional consideration.

F5: The Series C Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration.

F6: The Series D Preferred Stock automatically converted into Common Stock immediately prior to the closing of the Issuer's initial public offering on a 1-for-9.7170 basis for no additional consideration.

F7: The warrants to purchase shares of common stock were automatically exercised into shares of Common Stock by their terms immediately prior to the closing of the Issuer's initial public offering on a net exercise basis.

F8: Pursuant to the terms of the warrants, the Issuer withheld 1,065 warrant shares to pay the exercise price in connection with the net exercise.

F9: The securities are directly held by SR One Co-Invest IV, LLC ("SR One Co-Invest IV"). SR One Co-Invest IV Manager, LLC ("SR One Co-Invest Manager") is the managing member of SR One-Co-Invest IV, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

F10: The securities are directly held by SR One Co-Invest IV-A, LLC ("SR One Co-Invest IV-A"). SR One Co-Invest IV Manager is the managing member of SR One-Co-Invest IV-A, and SR One Capital Management is the managing member of SR One Co-Invest Manager. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Co-Invest Manager, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

F11: Pursuant to the terms of the warrants, the Issuer withheld 277 warrant shares to pay the exercise price in connection with the net exercise.

F12: The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

F13: Pursuant to the terms of the warrants, the Issuer withheld 438 warrant shares to pay the exercise price in connection with the net exercise.

Zenas BioPharma, Inc.

Report date October 09, 2025 · Filed October 14, 2025

Jointly reported with George Simeon

Section 16 reporting ended · disclosed 2025-10-14. Current position is not established by this disclosure.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee Note 2	1,173,395	Reported balance After 2025-10-09 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 1 · 2025-10-09 · Purchase · Acquired 63,158 · Balance 1,173,395 F1: Acquired from the Issuer on October 9, 2025 pursuant to a Securities Purchase Agreement dated October 7, 2025. F2: The reported securities are held directly by SR One Capital Opportunities Fund I, LP. SR One Capital Opportunities Partners I, LP is the general partner of SR One Capital Opportunities Fund I, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Opportunities Partners I, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Opportunities Partners I, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee Note 3	1,917,895	Reported balance After 2025-10-09 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 2 · 2025-10-09 · Purchase · Acquired 63,157 · Balance 1,917,895 F1: Acquired from the Issuer on October 9, 2025 pursuant to a Securities Purchase Agreement dated October 7, 2025. F3: The reported securities are held directly by AMZL, LP. SR One Capital SMA Partners, LP is the general partner of AMZL, LP, and SR One Capital Management, LLC is the general partner of SR One Capital SMA Partners, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital SMA Partners, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee Note 4	1,946,564	Reported balance Holding disclosure · report date 2025-10-09 · row 3 Holding and transaction disclosures are not merged. 1 source row Row 3 · Balance 1,946,564 F4: The reported securities are held directly by SR One Capital Fund II Aggregator, LP. SR One Capital Partners II, LP is the general partner of SR One Capital Fund II Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners II, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners II, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Acquired from the Issuer on October 9, 2025 pursuant to a Securities Purchase Agreement dated October 7, 2025.

F2: The reported securities are held directly by SR One Capital Opportunities Fund I, LP. SR One Capital Opportunities Partners I, LP is the general partner of SR One Capital Opportunities Fund I, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Opportunities Partners I, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Opportunities Partners I, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

F3: The reported securities are held directly by AMZL, LP. SR One Capital SMA Partners, LP is the general partner of AMZL, LP, and SR One Capital Management, LLC is the general partner of SR One Capital SMA Partners, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital SMA Partners, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

F4: The reported securities are held directly by SR One Capital Fund II Aggregator, LP. SR One Capital Partners II, LP is the general partner of SR One Capital Fund II Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners II, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners II, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein.

eFFECTOR Therapeutics, Inc.

Report date November 27, 2023 · Filed November 29, 2023

Jointly reported with SR One Capital Fund I Aggregator LP, SR ONE CAPITAL PARTNERS I, LP, SR One Co-Invest I, LLC, SR One Co-Invest I Manager, LLC, George Simeon

Section 16 reporting ended · disclosed 2023-11-29. Current position is not established by this disclosure.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee Note 2	4,391,536	Reported balance After 2023-11-27 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 1 · 2023-11-27 · Sale · Disposed 430,578 · Balance 4,391,536 F1: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $0.5691 to $0.68 per share, 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 range set forth in this footnote. F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Fund I Indirect Reporting Persons"). The Fund I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Fund I Indirect Reporting Persons have no pecuniary interest.
Common StockSEC Table I · non-derivative	IndirectSee Note 3	1,821,415	Reported balance After 2023-11-27 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 2 · 2023-11-27 · Sale · Disposed 178,585 · Balance 1,821,415 F1: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $0.5691 to $0.68 per share, 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 range set forth in this footnote. F3: The securities are directly held by SR One Co-Invest I, LLC ("SR One Co-Invest I"). SR One Co-Invest I Manager, LLC ("SR One Co-Invest I Manager") is the managing member of SR One Co-Invest I and SR One Capital Management is the managing member of SR One Co-Invest I Manager. Dr. George is the managing member of SR One Capital Management (SR One Co-Invest I Manager, SR One Capital Management, and Dr. George together, the "Co-Invest I Indirect Reporting Persons"). The Co-Invest I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 or otherwise of such portion of the securities held by SR One Co-Invest I in which the Co-Invest I Indirect Reporting Persons have no pecuniary interest.

Filing footnotes · ownership attribution and instrument terms

F1: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $0.5691 to $0.68 per share, 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 range set forth in this footnote.

F2: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Fund I Indirect Reporting Persons"). The Fund I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Fund I Indirect Reporting Persons have no pecuniary interest.

F3: The securities are directly held by SR One Co-Invest I, LLC ("SR One Co-Invest I"). SR One Co-Invest I Manager, LLC ("SR One Co-Invest I Manager") is the managing member of SR One Co-Invest I and SR One Capital Management is the managing member of SR One Co-Invest I Manager. Dr. George is the managing member of SR One Capital Management (SR One Co-Invest I Manager, SR One Capital Management, and Dr. George together, the "Co-Invest I Indirect Reporting Persons"). The Co-Invest I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 or otherwise of such portion of the securities held by SR One Co-Invest I in which the Co-Invest I Indirect Reporting Persons have no pecuniary interest.

Transaction history

JSON API

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 date	Company	Activity / security	Shares / units	Reported price	Reported value	Details
September 16, 2024 Filed Sep 17, 2024 00:51 UTC	Zenas BioPharma, Inc. ZBIO · Entity 275	ConversionSeries C Convertible Preferred Stock · Derivative	13,071,439	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-106978 · ownership.xml · derivative · entry 7 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner George Simeon · CIK 0001595117 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 2 Disclosed balance after: 0 Underlying: Common Stock · 1,505,388 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: On September 16, 2024, the shares of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 8.6831-for-1 basis without payment of further consideration upon the closing of the Issuer's initial public offering. The shares have no expiration date. F1 · price: On September 16, 2024, the shares of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 8.6831-for-1 basis without payment of further consideration upon the closing of the Issuer's initial public offering. The shares have no expiration date. F1 · derivative.exercise_date: On September 16, 2024, the shares of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 8.6831-for-1 basis without payment of further consideration upon the closing of the Issuer's initial public offering. The shares have no expiration date. F1 · derivative.expiration_date: On September 16, 2024, the shares of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 8.6831-for-1 basis without payment of further consideration upon the closing of the Issuer's initial public offering. The shares have no expiration date. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund II Aggregator, LP. SR One Capital Partners II, LP is the general partner of SR One Capital Fund II Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners II, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners II, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
September 16, 2024 Filed Sep 17, 2024 00:51 UTC	Zenas BioPharma, Inc. ZBIO · Entity 275	PurchaseCommon Stock	441,176	$17.00	$7,499,992.00	Disclosure SEC source: 0000950170-24-106978 · ownership.xml · nonDerivative · entry 6 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner George Simeon · CIK 0001595117 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 4 Disclosed balance after: 1,110,237 F4 · ownership.nature: The reported securities are held directly by SR One Capital Opportunities Fund I, LP. SR One Capital Opportunities Partners I, LP is the general partner of SR One Capital Opportunities Fund I, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Opportunities Partners I, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Opportunities Partners I, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
September 16, 2024 Filed Sep 17, 2024 00:51 UTC	Zenas BioPharma, Inc. ZBIO · Entity 275	ConversionCommon Stock	669,061	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-106978 · ownership.xml · nonDerivative · entry 5 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner George Simeon · CIK 0001595117 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 4 Disclosed balance after: 669,061 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 · kind: On September 16, 2024, the shares of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 8.6831-for-1 basis without payment of further consideration upon the closing of the Issuer's initial public offering. The shares have no expiration date. F1 · price: On September 16, 2024, the shares of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 8.6831-for-1 basis without payment of further consideration upon the closing of the Issuer's initial public offering. The shares have no expiration date. F4 · ownership.nature: The reported securities are held directly by SR One Capital Opportunities Fund I, LP. SR One Capital Opportunities Partners I, LP is the general partner of SR One Capital Opportunities Fund I, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Opportunities Partners I, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Opportunities Partners I, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
September 16, 2024 Filed Sep 17, 2024 00:51 UTC	Zenas BioPharma, Inc. ZBIO · Entity 275	PurchaseCommon Stock	1,352,942	$17.00	$23,000,014.00	Disclosure SEC source: 0000950170-24-106978 · ownership.xml · nonDerivative · entry 4 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner George Simeon · CIK 0001595117 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 3 Disclosed balance after: 1,854,738 F3 · ownership.nature: The reported securities are held directly by AMZL, LP. SR One Capital SMA Partners, LP is the general partner of AMZL, LP, and SR One Capital Management, LLC is the general partner of SR One Capital SMA Partners, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital SMA Partners, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
September 16, 2024 Filed Sep 17, 2024 00:51 UTC	Zenas BioPharma, Inc. ZBIO · Entity 275	ConversionCommon Stock	501,796	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-106978 · ownership.xml · nonDerivative · entry 3 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner George Simeon · CIK 0001595117 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 3 Disclosed balance after: 501,796 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 · kind: On September 16, 2024, the shares of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 8.6831-for-1 basis without payment of further consideration upon the closing of the Issuer's initial public offering. The shares have no expiration date. F1 · price: On September 16, 2024, the shares of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 8.6831-for-1 basis without payment of further consideration upon the closing of the Issuer's initial public offering. The shares have no expiration date. F3 · ownership.nature: The reported securities are held directly by AMZL, LP. SR One Capital SMA Partners, LP is the general partner of AMZL, LP, and SR One Capital Management, LLC is the general partner of SR One Capital SMA Partners, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital SMA Partners, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
September 16, 2024 Filed Sep 17, 2024 00:51 UTC	Zenas BioPharma, Inc. ZBIO · Entity 275	PurchaseCommon Stock	441,176	$17.00	$7,499,992.00	Disclosure SEC source: 0000950170-24-106978 · ownership.xml · nonDerivative · entry 2 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner George Simeon · CIK 0001595117 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 2 Disclosed balance after: 1,946,564 F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund II Aggregator, LP. SR One Capital Partners II, LP is the general partner of SR One Capital Fund II Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners II, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners II, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
September 16, 2024 Filed Sep 17, 2024 00:51 UTC	Zenas BioPharma, Inc. ZBIO · Entity 275	ConversionCommon Stock	1,505,388	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-106978 · ownership.xml · nonDerivative · entry 1 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner George Simeon · CIK 0001595117 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 2 Disclosed balance after: 1,505,388 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 · kind: On September 16, 2024, the shares of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 8.6831-for-1 basis without payment of further consideration upon the closing of the Issuer's initial public offering. The shares have no expiration date. F1 · price: On September 16, 2024, the shares of Series C Convertible Preferred Stock automatically converted into shares of Common Stock on a 8.6831-for-1 basis without payment of further consideration upon the closing of the Issuer's initial public offering. The shares have no expiration date. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund II Aggregator, LP. SR One Capital Partners II, LP is the general partner of SR One Capital Fund II Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners II, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners II, LP, SR One Capital Management, LLC and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
November 27, 2023 Filed Nov 29, 2023 17:07 UTC	eFFECTOR Therapeutics, Inc. EFTR · Entity 89916	SaleCommon Stock	178,585	$0.61	$108,311.80	Disclosure SEC source: 0001209191-23-056920 · doc4.xml · nonDerivative · entry 2 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Co-Invest I, LLC · CIK 0001864915 · 10% owner SR One Co-Invest I Manager, LLC · CIK 0001881204 · 10% owner George Simeon · CIK 0001595117 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 3 Disclosed balance after: 1,821,415 F1 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $0.5691 to $0.68 per share, 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 range set forth in this footnote. F3 · ownership.nature: The securities are directly held by SR One Co-Invest I, LLC ("SR One Co-Invest I"). SR One Co-Invest I Manager, LLC ("SR One Co-Invest I Manager") is the managing member of SR One Co-Invest I and SR One Capital Management is the managing member of SR One Co-Invest I Manager. Dr. George is the managing member of SR One Capital Management (SR One Co-Invest I Manager, SR One Capital Management, and Dr. George together, the "Co-Invest I Indirect Reporting Persons"). The Co-Invest I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 or otherwise of such portion of the securities held by SR One Co-Invest I in which the Co-Invest I Indirect Reporting Persons have no pecuniary interest. Read SEC document
November 27, 2023 Filed Nov 29, 2023 17:07 UTC	eFFECTOR Therapeutics, Inc. EFTR · Entity 89916	SaleCommon Stock	430,578	$0.61	$261,145.56	Disclosure SEC source: 0001209191-23-056920 · doc4.xml · nonDerivative · entry 1 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Co-Invest I, LLC · CIK 0001864915 · 10% owner SR One Co-Invest I Manager, LLC · CIK 0001881204 · 10% owner George Simeon · CIK 0001595117 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 2 Disclosed balance after: 4,391,536 F1 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $0.5691 to $0.68 per share, 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 range set forth in this footnote. F2 · ownership.nature: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Fund I Indirect Reporting Persons"). The Fund I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Fund I Indirect Reporting Persons have no pecuniary interest. Read SEC document
May 11, 2023 Filed May 15, 2023 22:16 UTC	Arcellx, Inc. ACLX · Entity 15294	SaleCommon Stock	3,804	$46.15	$175,554.60	Disclosure SEC source: 0001209191-23-029610 · doc4.xml · nonDerivative · entry 4 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 3 Disclosed balance after: 1,658,780 F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.00 to $46.56 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F3 · ownership.nature: The securities are directly held by SR One Co-Invest II, LLC ("SR One Co-Invest II"). SR One Co-Invest II Manager, LLC ("SR One Co-Invest II Manager") is the managing member of SR One Co-Invest II and SR One Capital Management is the managing member of SR One Co-Invest II Manager. Dr. George is the managing member of SR One Capital Management (SR One Co-Invest II Manager, SR One Capital Management, and Dr. George together, the "Co-Invest II Indirect Reporting Persons"). The Co-Invest II Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 or otherwise of such portion of the securities held by SR One Co-Invest II in which the Co-Invest II Indirect Reporting Persons have no pecuniary interest. Read SEC document
May 11, 2023 Filed May 15, 2023 22:16 UTC	Arcellx, Inc. ACLX · Entity 15294	SaleCommon Stock	6,485	$46.15	$299,282.75	Disclosure SEC source: 0001209191-23-029610 · doc4.xml · nonDerivative · entry 3 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 2 Disclosed balance after: 2,828,394 F4 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.00 to $46.56 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F2 · ownership.nature: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Fund I Indirect Reporting Persons"). The Fund I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Fund I Indirect Reporting Persons have no pecuniary interest. Read SEC document
May 11, 2023 Filed May 15, 2023 22:16 UTC	Arcellx, Inc. ACLX · Entity 15294	SaleCommon Stock	370,612	$45.00	$16,677,540.00	Disclosure SEC source: 0001209191-23-029610 · doc4.xml · nonDerivative · entry 2 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 3 Disclosed balance after: 1,662,584 F1 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.00 to $45.745 per share, 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 (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F3 · ownership.nature: The securities are directly held by SR One Co-Invest II, LLC ("SR One Co-Invest II"). SR One Co-Invest II Manager, LLC ("SR One Co-Invest II Manager") is the managing member of SR One Co-Invest II and SR One Capital Management is the managing member of SR One Co-Invest II Manager. Dr. George is the managing member of SR One Capital Management (SR One Co-Invest II Manager, SR One Capital Management, and Dr. George together, the "Co-Invest II Indirect Reporting Persons"). The Co-Invest II Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 or otherwise of such portion of the securities held by SR One Co-Invest II in which the Co-Invest II Indirect Reporting Persons have no pecuniary interest. Read SEC document
May 11, 2023 Filed May 15, 2023 22:16 UTC	Arcellx, Inc. ACLX · Entity 15294	SaleCommon Stock	631,932	$45.00	$28,436,940.00	Disclosure SEC source: 0001209191-23-029610 · doc4.xml · nonDerivative · entry 1 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Note 2 Disclosed balance after: 2,834,879 F1 · price: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.00 to $45.745 per share, 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 (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F2 · ownership.nature: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Fund I Indirect Reporting Persons"). The Fund I Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Fund I Indirect Reporting Persons have no pecuniary interest. Read SEC document
December 20, 2022 Filed Dec 20, 2022 23:37 UTC	Design Therapeutics, Inc. DSGN · Entity 4991	PurchaseCommon Stock	40,000	$8.14	$325,432.00	Disclosure SEC source: 0001209191-22-062226 · doc4.xml · nonDerivative · entry 3 SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,526,476 F4 · price: The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $7.86 to $8.45 per share, inclusive. The Reporting Persons undertake 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 range set forth in this footnote. F2 · ownership.direct: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Indirect Reporting Persons"). The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Indirect Reporting Persons have no pecuniary interest, and this report shall not be deemed an admission that the Indirect Reporting Persons are the beneficial owners of such securities for Section 16 or any other purpose. Read SEC document
December 19, 2022 Filed Dec 20, 2022 23:37 UTC	Design Therapeutics, Inc. DSGN · Entity 4991	PurchaseCommon Stock	360,000	$8.63	$3,108,096.00	Disclosure SEC source: 0001209191-22-062226 · doc4.xml · nonDerivative · entry 2 SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,486,476 F3 · price: The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $8.25 to $8.90 per share, inclusive. The Reporting Persons undertake 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 range set forth in this footnote. F2 · ownership.direct: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Indirect Reporting Persons"). The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Indirect Reporting Persons have no pecuniary interest, and this report shall not be deemed an admission that the Indirect Reporting Persons are the beneficial owners of such securities for Section 16 or any other purpose. Read SEC document
December 16, 2022 Filed Dec 20, 2022 23:37 UTC	Design Therapeutics, Inc. DSGN · Entity 4991	PurchaseCommon Stock	500,000	$8.28	$4,140,550.00	Disclosure SEC source: 0001209191-22-062226 · doc4.xml · nonDerivative · entry 1 SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 6,126,476 F1 · price: The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $7.90 to $8.76 per share, inclusive. The Reporting Persons undertake 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 range set forth in this footnote. F2 · ownership.direct: The securities are directly held by SR One Capital Fund I Aggregator, LP ("SR One Fund I Aggregator"). SR One Capital Partners I, LP ("SR One Partners I") is the sole general partner of SR One Fund I Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the sole general partner of SR One Partners I. Simeon George, M.D. is the managing member of SR One Capital Management (SR One Partners I, SR One Capital Management, and Dr. George together, the "Indirect Reporting Persons"). The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), or otherwise of such portion of the securities held by SR One Fund I Aggregator in which the Indirect Reporting Persons have no pecuniary interest, and this report shall not be deemed an admission that the Indirect Reporting Persons are the beneficial owners of such securities for Section 16 or any other purpose. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	ConversionSeries C Preferred Stock · Derivative	433,196	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · derivative · entry 12 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 0 Underlying: Common Stock · 433,196 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: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · price: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · derivative.exercise_date: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · derivative.expiration_date: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F4 · ownership.nature: The reported securities are held directly by SR One Co-Invest II, LLC. SR One Co-Invest Manager II, LLC is the managing member of SR One Co-Invest II, LLC, and SR One Capital Management, LLC is the managing member of SR One Co-Invest Manager II, LLC. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Co-Invest Manager II, LLC, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	ConversionSeries C Preferred Stock · Derivative	649,795	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · derivative · entry 11 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 0 Underlying: Common Stock · 649,795 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: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · price: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · derivative.exercise_date: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · derivative.expiration_date: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	ConversionSeries B-2 Preferred Stock · Derivative	533,389	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · derivative · entry 10 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 0 Underlying: Common Stock · 533,389 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: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · price: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · derivative.exercise_date: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · derivative.expiration_date: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	ConversionSeries B-1 Preferred Stock · Derivative	666,651	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · derivative · entry 9 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 0 Underlying: Common Stock · 666,651 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: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · price: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · derivative.exercise_date: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · derivative.expiration_date: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	ConversionSeries A Preferred Stock · Derivative	1,550,309	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · derivative · entry 8 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 0 Underlying: Common Stock · 1,550,309 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: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · price: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · derivative.exercise_date: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F1 · derivative.expiration_date: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	PurchaseCommon Stock	1,600,000	$15.00	$24,000,000.00	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · nonDerivative · entry 7 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 2,033,196 F5 · shares: SR One Co-Invest II, LLC purchased 1,600,000 shares of Common Stock of the Issuer in connection with the Issuer's public offering. F4 · ownership.nature: The reported securities are held directly by SR One Co-Invest II, LLC. SR One Co-Invest Manager II, LLC is the managing member of SR One Co-Invest II, LLC, and SR One Capital Management, LLC is the managing member of SR One Co-Invest Manager II, LLC. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Co-Invest Manager II, LLC, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	ConversionCommon Stock	433,196	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · nonDerivative · entry 6 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 433,196 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: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F4 · ownership.nature: The reported securities are held directly by SR One Co-Invest II, LLC. SR One Co-Invest Manager II, LLC is the managing member of SR One Co-Invest II, LLC, and SR One Capital Management, LLC is the managing member of SR One Co-Invest Manager II, LLC. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Co-Invest Manager II, LLC, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	PurchaseCommon Stock	66,667	$15.00	$1,000,005.00	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · nonDerivative · entry 5 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 3,466,811 F3 · shares: SR One Capital Fund I Aggregator, LP purchased 66,667 shares of Common Stock of the Issuer in connection with the Issuer's public offering. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	ConversionCommon Stock	649,795	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · nonDerivative · entry 4 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 3,400,144 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: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	ConversionCommon Stock	533,389	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · nonDerivative · entry 3 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 2,750,349 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: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	ConversionCommon Stock	666,651	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · nonDerivative · entry 2 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 2,216,960 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: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2022 Filed Feb 10, 2022 13:41 UTC	Arcellx, Inc. ACLX · Entity 15294	ConversionCommon Stock	1,550,309	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-22-008281 · doc4.xml · nonDerivative · entry 1 SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR One Co-Invest II, LLC · CIK 0001867644 · 10% owner George Simeon · CIK 0001595117 · 10% owner SR One Co-Invest II Manager, LLC · CIK 0001910324 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See Footnote Disclosed balance after: 1,550,309 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: All outstanding shares of Preferred Stock will automatically convert into shares of Common Stock at the Reporting Person's election and automatically upon the closing of the initial public offering of Arcellx, Inc. (the "Issuer"). The Preferred Stock has no expiration date. F2 · ownership.nature: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
March 30, 2021 Filed Apr 1, 2021 22:23 UTC	Design Therapeutics, Inc. DSGN · Entity 4991	ConversionSeries B Preferred Stock · Derivative	1,526,718	$0.00	$0.00	Disclosure SEC source: 0001209191-21-024238 · doc4.xml · derivative · entry 5 SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 936,637 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: The Series A Preferred Stock and the Series B Preferred Stock were converted into Common Stock on a 1.63-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A Preferred Stock and Series B Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. F1 · derivative.exercise_date: The Series A Preferred Stock and the Series B Preferred Stock were converted into Common Stock on a 1.63-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A Preferred Stock and Series B Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. F1 · derivative.expiration_date: The Series A Preferred Stock and the Series B Preferred Stock were converted into Common Stock on a 1.63-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A Preferred Stock and Series B Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. F2 · ownership.direct: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
March 30, 2021 Filed Apr 1, 2021 22:23 UTC	Design Therapeutics, Inc. DSGN · Entity 4991	ConversionSeries A Preferred Stock · Derivative	7,236,938	$0.00	$0.00	Disclosure SEC source: 0001209191-21-024238 · doc4.xml · derivative · entry 4 SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 4,439,839 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: The Series A Preferred Stock and the Series B Preferred Stock were converted into Common Stock on a 1.63-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A Preferred Stock and Series B Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. F1 · derivative.exercise_date: The Series A Preferred Stock and the Series B Preferred Stock were converted into Common Stock on a 1.63-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A Preferred Stock and Series B Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. F1 · derivative.expiration_date: The Series A Preferred Stock and the Series B Preferred Stock were converted into Common Stock on a 1.63-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A Preferred Stock and Series B Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. F2 · ownership.direct: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
March 30, 2021 Filed Apr 1, 2021 22:23 UTC	Design Therapeutics, Inc. DSGN · Entity 4991	PurchaseCommon Stock	250,000	$20.00	$5,000,000.00	Disclosure SEC source: 0001209191-21-024238 · doc4.xml · nonDerivative · entry 3 SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,626,476 F3 · kind: SR One Capital Fund I Aggregator, LP purchased 250,000 shares of Common Stock of Design Therapeutics, Inc. (the "Issuer") in connection with the Issuer's public offering. F2 · ownership.direct: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
March 30, 2021 Filed Apr 1, 2021 22:23 UTC	Design Therapeutics, Inc. DSGN · Entity 4991	ConversionCommon Stock	936,637	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-21-024238 · doc4.xml · nonDerivative · entry 2 SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,376,476 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: The Series A Preferred Stock and the Series B Preferred Stock were converted into Common Stock on a 1.63-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A Preferred Stock and Series B Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. F2 · ownership.direct: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Read SEC document
March 30, 2021 Filed Apr 1, 2021 22:23 UTC	Design Therapeutics, Inc. DSGN · Entity 4991	ConversionCommon Stock	4,439,839	Not disclosed	Not disclosed	Disclosure SEC source: 0001209191-21-024238 · doc4.xml · nonDerivative · entry 1 SR One Capital Fund I Aggregator LP · CIK 0001848319 · 10% owner SR ONE CAPITAL PARTNERS I, LP · CIK 0001853724 · 10% owner SR ONE CAPITAL MANAGEMENT, LLC · CIK 0001853723 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 4,439,839 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: The Series A Preferred Stock and the Series B Preferred Stock were converted into Common Stock on a 1.63-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A Preferred Stock and Series B Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. F2 · ownership.direct: The reported securities are held directly by SR One Capital Fund I Aggregator, LP. SR One Capital Partners I, LP is the general partner of SR One Capital Fund I Aggregator, LP, and SR One Capital Management, LLC is the general partner of SR One Capital Partners I, LP. Simeon George, M.D. is the managing member of SR One Capital Management, LLC. Each of SR One Capital Partners I, LP, SR One Capital Management, LLC and Mr. George may each be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. 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.