As of September 29, 2026, Passage BIO's top three insider holders are Capital Management Lp Lynx1 (TenPercentOwner, 673.76K shares), Capital Management Lp Lynx1 (TenPercentOwner, 623.70K shares), Capital Management Lp Lynx1 (TenPercentOwner, 462.85K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Capital Management Lp Lynx1 | TenPercentOwner | 0 | 1,760,311 | 1,760,311 | 83.7% | 29 Jun, 2026 |
| 2 | Advisors Llc Orbimed | TenPercentOwner | 0 | 303,317 | 303,317 | 14.4% | 26 Jun, 2025 |
| 3 | Jill M. Quigley | Chief Operating Officer | 18,438 | 0 | 18,438 | 0.9% | 10 Dec, 2021 |
| 4 | William Chou | President And Ceo | 6,524 | 0 | 6,524 | 0.3% | 12 Jan, 2026 |
| 5 | Kathleen Borthwick | Cfo | 5,402 | 0 | 5,402 | 0.3% | 12 Jan, 2026 |
| 6 | Edgar B. Cale | Gc Corporate Secretary | 2,300 | 0 | 2,300 | 0.1% | 03 Jan, 2024 |
| 7 | Mark S Forman | Chief Medical Officer | 2,263 | 0 | 2,263 | 0.1% | 03 Jan, 2024 |
| 8 | Alexandros Fotopoulos | Chief Technical Officer | 1,435 | 0 | 1,435 | 0.1% | 20 Jun, 2023 |
| 9 | Simona King | Chief Financial Officer | 1,200 | 0 | 1,200 | 0.1% | 01 Aug, 2023 |
| 10 | Bruce A Goldsmith | Ceo And President | 799 | 0 | 799 | 0.0% | 23 Mar, 2022 |
| 11 | Monika Maria Toernsen | Chief Commercial Officer | 166 | 0 | 166 | 0.0% | 18 Nov, 2022 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 25 Jun, 2026 | Capital Management Lp Lynx1 | TenPercentOwner | Acquired P | 50,055 | $4.12 | $206.10K | 673,759 | Indirect |
| 19 May, 2026 | Athena Countouriotis | Director | Acquired A | 10,539 | $0.00 | $0 | 10,539 | Direct |
| 19 May, 2026 | Sandip Kapadia | Director | Acquired A | 10,539 | $0.00 | $0 | 10,539 | Direct |
| 19 May, 2026 | Derrell Porter | Director | Acquired A | 10,539 | $0.00 | $0 | 10,539 | Direct |
| 19 May, 2026 | Thomas Richard Kassberg | Director | Acquired A | 10,539 | $0.00 | $0 | 10,539 | Direct |
| 19 May, 2026 | Dolan Sondhi | Director | Acquired A | 10,539 | $0.00 | $0 | 10,539 | Direct |
| 19 May, 2026 | Maxine Gowen | Director | Acquired A | 10,539 | $0.00 | $0 | 10,539 | Direct |
| 16 Mar, 2026 | Kathleen Borthwick | Cfo | Acquired A | 15,610 | $0.00 | $0 | 15,610 | Direct |
| 16 Mar, 2026 | William Chou | President And Ceo | Acquired A | 58,000 | $0.00 | $0 | 58,000 | Direct |
| 08 Jan, 2026 | Kathleen Borthwick | Cfo | Acquired M | 5,000 | — | — | 7,464 | Direct |
| 08 Jan, 2026 | William Chou | President And Ceo | Acquired M | 10,000 | — | — | 10,600 | Direct |
| 08 Jan, 2026 | William Chou | President And Ceo | Disposed S | 4,076 | $18.44 | $75.16K | 6,524 | Direct |
| 08 Jan, 2026 | Kathleen Borthwick | Cfo | Disposed S | 2,062 | $18.44 | $38.02K | 5,402 | Direct |
| 08 Jan, 2026 | Kathleen Borthwick | Cfo | Disposed M | 5,000 | $0.00 | $0 | 5,000 | Direct |
| 08 Jan, 2026 | William Chou | President And Ceo | Disposed M | 10,000 | $0.00 | $0 | 10,000 | Direct |
| 11 Sep, 2025 | Capital Management Lp Lynx1 | TenPercentOwner | Acquired P | 325 | $6.96 | $2.26K | 592,021 | Indirect |
| 12 Sep, 2025 | Capital Management Lp Lynx1 | TenPercentOwner | Acquired P | 19,783 | $6.99 | $138.30K | 611,804 | Indirect |
| 15 Sep, 2025 | Capital Management Lp Lynx1 | TenPercentOwner | Acquired P | 11,900 | $6.99 | $83.18K | 623,704 | Indirect |
| 22 Jul, 2025 | Capital Management Lp Lynx1 | TenPercentOwner | Acquired P | 13,123 | $5.44 | $71.34K | 475,971 | Indirect |
| 23 Jul, 2025 | Capital Management Lp Lynx1 | TenPercentOwner | Acquired P | 49,302 | $5.74 | $283.03K | 525,273 | Indirect |