Apellis Pharmaceuticals, Inc.
APLSDelisted May 14, 2026- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001492422
Apellis Pharmaceuticals, Inc. was delisted on May 14, 2026; its insiders filed their last Form 4 on May 14, 2026; 324 institutions reported holding it in 13F filings for Q1 2026, worth $5.56B in total; Soros Fund Management was the only superinvestor holding it.
Holders of 5% or more of APLS
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Apellis Pharmaceuticals, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G | 10.50%13.2M shares | +6.00 ppfrom 4.50% | Oct 18, 20244 filings | Feb 6, 2026 | SEC |
| State Street Corp | 13G | 5.40%6.85M shares | New | May 12, 20261 filing | May 12, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
49 Schedule 13D and 13G filings on Apellis Pharmaceuticals, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jun 5, 20264:14 PM ET | Morgan Stanleyand 1 other | 13G/A | 0.00%0 shares | −7.70 ppfrom 7.70%Below 5% | May 31, 2026 | SEC |
| May 15, 20268:37 AM ET | Deep Track Capital, LPand 2 others | 13G/A | 3.55%4.53M shares | −2.02 ppfrom 5.57%Below 5% | Mar 31, 2026 | SEC |
| May 15, 20268:04 AM ET | RTW Investments, LPand 1 other | 13G/A | 2.90%3.69M shares | −3.20 ppfrom 6.10%Below 5% | Mar 31, 2026 | SEC |
| May 14, 20264:36 PM ET | Biogen Inc. | 13D/A | 0.00%0 shares | −14.20 ppfrom 14.20%Below 5% | May 14, 2026 | SEC |
| May 12, 20269:51 AM ET | State Street Corp | 13G | 5.40%6.85M shares | New | Mar 31, 2026 | SEC |
| Apr 7, 20268:06 AM ET | Wellington Management Group LLPand 2 others | 13G/A | 0.20%249.6K shares | −10.70 ppfrom 10.90%Below 5% | Mar 31, 2026 | SEC |
| Apr 6, 20266:08 PM ET | Biogen Inc. | 13D | 14.20%18.5M shares | New | Mar 31, 2026 | SEC |
| Mar 26, 20263:45 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Feb 17, 20268:25 AM ET | RTW Investments, LPand 1 other | 13G | 6.10%7.67M shares | New | Dec 31, 2025 | SEC |
| Feb 6, 202612:08 PM ET | BlackRock, Inc. | 13G | 10.50%13.2M shares | +6.00 ppfrom 4.50% | Jan 31, 2026 | SEC |
| Nov 14, 20253:45 PM ET | EcoR1 Capital, LLCand 2 others | 13G/A | 2.70%3.45M shares | –Below 5% | Sep 30, 2025 | SEC |
| Nov 7, 20258:18 AM ET | Wellington Management Group LLPand 3 others | 13G/A | 10.90%13.8M shares | +3.70 ppfrom 7.20% | Oct 31, 2025 | SEC |
| Aug 12, 202510:34 AM ET | Wellington Management Group LLPand 3 others | 13G/A | 7.20%9.01M shares | −2.30 ppfrom 9.50% | Jun 30, 2025 | SEC |
| May 16, 20254:42 PM ET | Deep Track Capital, LPand 2 others | 13G | 5.57%7.00M shares | – | May 9, 2025 | SEC |
| Apr 25, 20254:14 PM ET | BlackRock, Inc. | 13G/A | 4.50%5.60M shares | –Below 5% | Mar 31, 2025 | SEC |
| Feb 10, 202510:49 AM ET | Wellington Management Group LLPand 3 others | 13G/A | 9.50%11.8M shares | – | Dec 31, 2024 | SEC |
| Feb 3, 20251:09 PM ET | Morgan Stanleyand 1 other | 13G | 7.70%9.59M shares | New | Dec 31, 2024 | SEC |
| Nov 22, 2024 | Deep Track Capital, LP | 13G/AOld format | – | – | – | SEC |
| Nov 22, 2024 | Deep Track Capital, LP | 13GOld format | – | New | – | SEC |
| Nov 14, 2024 | T. Rowe Price Investment Management, Inc. | 13G/AOld format | – | – | – | SEC |
| Nov 8, 2024 | BlackRock, Inc. | 13GOld format | – | – | – | SEC |
| Nov 8, 2024 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Oct 18, 2024 | BlackRock, Inc. | 13GOld format | – | New | – | SEC |
| Feb 14, 2024 | T. Rowe Price Investment Management, Inc. | 13GOld format | – | – | – | SEC |
| Feb 14, 2024 | EcoR1 Capital, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2024 | Avoro Capital Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2024 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Sep 8, 2023 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Jul 18, 2023 | EcoR1 Capital, LLC | 13GOld format | – | New | – | SEC |
| Jul 7, 20234:35 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | T. Rowe Price Investment Management, Inc. | 13GOld format | – | New | – | SEC |
| Feb 14, 2023 | Avoro Capital Advisors LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 6, 2023 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Jan 31, 20235:52 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Morningside Venture Investments Ltd | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | HHLR Advisors, Ltd.SuperinvestorHHLR Advisors (Hillhouse) | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Price T Rowe Associates Inc | 13GOld format | – | New | – | SEC |
| Feb 11, 2022 | Avoro Capital Advisors LLC | 13GOld format | – | New | – | SEC |
| Feb 9, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 4, 2022 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
| Feb 3, 20224:41 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Morningside Venture Investments Ltd | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | HHLR Advisors, Ltd.SuperinvestorHHLR Advisors (Hillhouse) | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13GOld format | – | New | – | SEC |
| Feb 5, 20217:51 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 3, 2021 | Wellington Management Group LLP | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
189 notices from officers, directors and other affiliates planning to sell Apellis Pharmaceuticals, Inc. shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Feb 11, 20264:13 PM ET | DeLong Mark JeffreyOfficer | 368 | $8.15K | Feb 11, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 22, 20264:42 PM ET | Watson David O.Officer | 7.83K | $170.5K | Jan 22, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 22, 20264:42 PM ET | Deschatelets PascalOfficer | 5.93K | $129.0K | Jan 22, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 22, 20264:37 PM ET | Sullivan Timothy EugeneOfficer | 10.3K | $223.9K | Jan 22, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 22, 20264:32 PM ET | DeLong Mark JeffreyOfficer | 3.37K | $73.4K | Jan 22, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 22, 20264:31 PM ET | Francois CedricOfficer | 27.2K | $591.8K | Jan 22, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 22, 20264:29 PM ET | Nicholson NurOfficer | 7.72K | $168.1K | Jan 22, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 22, 20264:24 PM ET | Chopas James GeorgeOfficer | 2.06K | $44.9K | Jan 22, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 22, 20264:14 PM ET | Baumal CarolineOfficer | 2.80K | $60.9K | Jan 22, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 20, 20263:42 PM ET | Nicholson NurOfficer | 2.20K | $43.6K | Jan 20, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 20, 20263:41 PM ET | Watson David O.Officer | 2.48K | $49.0K | Jan 20, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 20, 20263:31 PM ET | Francois CedricOfficer | 8.18K | $161.9K | Jan 20, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 20, 20263:26 PM ET | DeLong Mark JeffreyOfficer | 1.33K | $26.4K | Jan 20, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 20, 20263:26 PM ET | Deschatelets PascalOfficer | 909 | $18.0K | Jan 20, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 20, 20263:19 PM ET | Baumal CarolineOfficer | 1.88K | $37.3K | Jan 20, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 20, 20263:10 PM ET | Sullivan Timothy EugeneOfficer | 2.89K | $57.2K | Jan 20, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 20, 20263:10 PM ET | Chopas James GeorgeOfficer | 726 | $14.4K | Jan 20, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 13, 20264:12 PM ET | Nicholson NurOfficer | 2.62K | $58.1K | Jan 13, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 13, 20263:58 PM ET | Chopas James GeorgeOfficer | 873 | $19.4K | Jan 13, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 13, 20263:55 PM ET | Watson David O.Officer | 5.78K | $128.2K | Jan 13, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 13, 20263:53 PM ET | DeLong Mark JeffreyOfficer | 1.78K | $39.5K | Jan 13, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 13, 20263:48 PM ET | Deschatelets PascalOfficer | 2.28K | $50.5K | Jan 13, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 13, 20263:45 PM ET | Francois CedricOfficer · Director | 10.2K | $226.0K | Jan 13, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 13, 20263:40 PM ET | Sullivan Timothy EugeneOfficer | 3.86K | $85.6K | Jan 13, 2026 | Fidelity Brokerage Services LLC | SEC |
| Jan 5, 20263:06 PM ET | Baumal CarolineOfficer | 3.02K | $77.1K | Jan 5, 2026 | Fidelity Brokerage Services LLC | SEC |
Showing the latest 25. See the APLS notices from the last 12 months