According to recent filings covering the 90 days ending December 12, 2025, the three most significant insider holders at Apellis Pharmaceuticals are Chief Financial Officer Timothy Eugene Sullivan (171.33K shares), General Counsel David O. Watson (158.87K shares), Chief Research And Development Leslie Meltzer (61.80K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Venture Investments Ltd Morningside | 12,806,342 | 18 Nov, 2021 | |
| Pascal Deschatelets | Chief Scientific Officer | 1,160,496 | 22 May, 2025 |
| Cedric Francois | Chief Executive Officer | 639,551 | 18 Jul, 2025 |
| Alec Machiels | 388,978 | 03 Jan, 2025 | |
| A. Sinclair Dunlop | 188,535 | 03 Jan, 2025 | |
| Timothy Eugene Sullivan | Chief Financial Officer | 171,332 | 23 Oct, 2025 |
| David O. Watson | General Counsel | 158,866 | 18 Nov, 2025 |
| Kelley Boucher | Chief People Officer | 97,658 | 03 Sep, 2025 |
| Federico Grossi | Chief Medical Officer | 94,884 | 09 Jan, 2023 |
| Caroline Baumal | Chief Medical Officer | 93,301 | 21 Jan, 2025 |
| Adam J. Townsend | Chief Commercial Officer | 84,050 | 30 Jan, 2025 |
| Mark Jeffrey Delong | Chief Business & Strat Officer | 83,945 | 12 Feb, 2025 |
| Nur Nicholson | Chief Technical Officer | 83,664 | 30 Jan, 2025 |
| Karen Lewis | Chief People Officer | 70,251 | 30 Jan, 2025 |
| Lukas Scheibler | Chief Research Officer | 68,299 | 05 Dec, 2023 |
| Leslie Meltzer | Chief Research And Development | 61,804 | 02 Sep, 2025 |
| Jeffrey Eisele | Chief Development Officer | 55,312 | 30 Jan, 2025 |
| James George Chopas | VP/Chief Accounting Officer | 53,468 | 16 Sep, 2025 |
| Victoria L. Brown | Program Team Lead | 23,556 | 24 Jan, 2023 |
| Paul R. Fonteyne | 22,705 | 03 Jan, 2025 | |
| Stephanie Monaghan O'Brien | 17,705 | 03 Jan, 2025 | |
| Gerald Chan | 17,705 | 03 Jan, 2025 | |
| Craig A Wheeler | 16,483 | 21 Apr, 2025 | |
| Keli Walbert | 9,090 | 10 Jan, 2025 | |
| Nicole D Perry | Vice President Accounting | 4,847 | 03 Aug, 2021 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 17 Nov, 2025 | David O. Watson | Common Stock | D | 5,000 | $20.06 | 108,730 | D | S |
| 21 Oct, 2025 | Timothy Eugene Sullivan | Common Stock | A | 10,000 | $10.03 | 120,936 | D | M |
| 21 Oct, 2025 | Timothy Eugene Sullivan | Common Stock | D | 10,000 | $28.03 | 110,936 | D | S |
| 16 Oct, 2025 | David O. Watson | Common Stock | D | 5,000 | $25.22 | 113,730 | D | S |
| 30 Sep, 2025 | A. Sinclair Dunlop | Common Stock | D | 31,092 | $22.58 | 33,979 | I | S |
| 30 Sep, 2025 | A. Sinclair Dunlop | Common Stock | D | 3,837 | $0.00 | 30,142 | I | J |
| 19 Sep, 2025 | A. Sinclair Dunlop | - | - | 68,908 | I | |||
| 19 Sep, 2025 | A. Sinclair Dunlop | Common Stock | D | 31,092 | $22.95 | 68,908 | I | S |
| 19 Sep, 2025 | A. Sinclair Dunlop | Common Stock | D | 3,837 | $0.00 | 65,071 | I | J |
| 19 Sep, 2025 | A. Sinclair Dunlop | - | - | 65,071 | I | |||
| 16 Sep, 2025 | David O. Watson | Common Stock | D | 5,000 | $24.34 | 118,730 | D | S |
| 15 Sep, 2025 | James George Chopas | - | - | 53,468 | D | |||
| 15 Sep, 2025 | James George Chopas | Common Stock | D | 189 | $24.19 | 53,468 | D | S |
| 10 Sep, 2025 | David O. Watson | Common Stock | D | 20,000 | $26.17 | 50,136 | I | S |
| 08 Sep, 2025 | Timothy Eugene Sullivan | Common Stock | A | 15,000 | $10.03 | 143,665 | D | M |
| 08 Sep, 2025 | Timothy Eugene Sullivan | Common Stock | D | 32,729 | $27.86 | 110,936 | D | S |
| 08 Sep, 2025 | Timothy Eugene Sullivan | Common Stock | D | 10,000 | $27.83 | 60,396 | I | S |
| 02 Sep, 2025 | Kelley Boucher | - | - | 97,658 | D | |||
| 02 Sep, 2025 | James George Chopas | Common Stock | D | 548 | $28.08 | 53,657 | D | S |
| 02 Sep, 2025 | Kelley Boucher | Common Stock | A | 30,476 | $0.00 | 97,658 | D | A |