Comparable stake leader
BlackRock, Inc.
SEC ownership of Apellis Pharmaceuticals, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001492422.
Disclosed value leader
Morningside Venture Investments Ltd
Comparable rows
8/31
Latest evidence
30 Jun 2026
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
8 of 31
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001492422
- Issuer location
- Waltham, MA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Apellis Pharmaceuticals, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
Morningside Venture Inves...
Comparable rows
8/31
Latest evidence
30 Jun 2026
13D/G
3/4/5
13F
Lead comparable stake: 10%
23 rows are not safely comparable across share classes.
13D/G row: BlackRock, Inc.
Showing 1-8 of 31 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 10%.
8 of 31 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
10%
STATE STREET CORP
5.4%
Deep Track Capital, LP
3.6%
RTW INVESTMENTS, LP
2.9%
EcoR1 Capital, LLC
2.7%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 31 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13D/G
|
10%
|
$332,289,194
13,228,073 shares
|
+$191,653,065 | 31 Jan 2026 |
| STATE STREET CORP |
13D/G
STATE STREET CORPORATION
|
5.4%
|
$278,524,311
6,845,031 shares
|
$0 | 31 Mar 2026 |
| Deep Track Capital, LP |
13D/G
|
3.6%
|
$184,422,298
4,532,374 shares
|
-$100,407,702 | 31 Mar 2026 |
| RTW INVESTMENTS, LP |
13D/G
|
2.9%
|
$149,944,481
3,685,045 shares
|
-$162,016,146 | 31 Mar 2026 |
| EcoR1 Capital, LLC |
13D/G
|
2.7%
|
$78,009,140
3,447,156 shares
|
$0 | 30 Sep 2025 |
| WELLINGTON MANAGEMENT GROUP LLP |
13D/G
|
0.2%
|
$10,042,791
249,635 shares
|
-$543,140,340 | 31 Mar 2026 |
| Timothy Eugene Sullivan |
3/4/5
Chief Financial Officer
|
0.05%
|
$3,116,828
60,396 shares
mixed-class rows
|
-$1,837,126 | 14 May 2026 |
| IFP Advisors, Inc |
13F
Company
|
0%
|
$10,175
248 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$8,618,797.
Buys
$0
Insiders: 0
Sells
$8,618,797
Insiders: 9
Net
-$8,618,797
Shares: -355,262
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 355,262
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 123,557 | $0 | $2,685,304 | -$2,685,304 |
| 9-12 | 0 | 231,705 | $0 | $5,933,493 | -$5,933,493 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 27 reporting-owner rows connected to Apellis Pharmaceuticals, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
27
Largest Forms 3/4/5 holder
Morningside Venture Investments Ltd
Net 12M change
-$7,200,348
Latest report
14 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Morningside Venture Investments Ltd | 10%+ Owner | $815,635,922 | Mixed | 18 Nov 2021 | ||
| Lukas Scheibler | Chief Research Officer | $6,961,586 | Mixed | 01 Dec 2023 | ||
| Federico Grossi | Chief Medical Officer | $6,043,162 | Mixed | 05 Jan 2023 | ||
| Cedric Francois | Chief Executive Officer, Director | $5,574,625 | -$979,789 | -15% | Mixed | 14 May 2026 |
| Timothy Eugene Sullivan | Chief Financial Officer | $3,116,828 | -$1,837,126 | -37% | Mixed | 14 May 2026 |
| Adam J. Townsend | Chief Commercial Officer | $2,481,459 | Filing P/S | 29 Jan 2025 | ||
| Karen Lewis | Chief People Officer | $2,074,062 | Filing P/S | 29 Jan 2025 | ||
| Jeffrey Eisele | Chief Development Officer | $1,633,009 | Filing P/S | 29 Jan 2025 | ||
| Mark Jeffrey DeLong | Chief Business & Strat Officer | $1,599,675 | -$147,421 | -8.4% | Mixed | 14 May 2026 |
| Nur Nicholson | Chief Technical Officer | $1,599,675 | -$269,828 | -14% | Mixed | 14 May 2026 |
| Watson David O | General Counsel | $1,599,675 | -$1,341,646 | -46% | Mixed | 14 May 2026 |
| Pascal Deschatelets | Chief Scientific Officer | $1,599,675 | -$197,537 | -11% | Mixed | 14 May 2026 |
| Caroline Baumal | Chief Medical Officer | $1,599,675 | -$175,225 | -9.9% | Mixed | 14 May 2026 |
| Victoria L. Brown | Program Team Lead | $1,500,282 | Mixed | 20 Jan 2023 | ||
| Kelley Boucher | Chief People Officer | $1,306,808 | Mixed | 14 May 2026 | ||
| Nicole D. Perry | Vice President - Accounting | $717,179 | Mixed | 02 Aug 2021 | ||
| Craig A. Wheeler | Director | $513,149 | Mixed | 14 May 2026 | ||
| Keli Walbert | Director | $507,804 | Mixed | 14 May 2026 | ||
| Mikael Dolsten | Director | $505,869 | Mixed | 14 May 2026 | ||
| Stephanie Monaghan O'Brien | Director | $381,092 | Mixed | 14 May 2026 |
Recent insider transactions for Apellis Pharmaceuticals, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| A. Sinclair Dunlop | APLS | Common Stock | Disposed to Issuer | -100% | -20,311 | 0 | 14 May 2026 | Direct | ||
| A. Sinclair Dunlop | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -161,567 | 0 | 14 May 2026 | Direct | ||
| A. Sinclair Dunlop | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -102,826 | 0 | 14 May 2026 | Direct | ||
| James George Chopas | APLS | Common Stock | Disposed to Issuer | -100% | -76,650 | 0 | 14 May 2026 | Direct | ||
| James George Chopas | APLS | Common Stock | Award | 38,244 | 16,150 | 14 May 2026 | Direct | |||
| James George Chopas | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -65,955 | 0 | 14 May 2026 | Direct | ||
| James George Chopas | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -81,053 | 0 | 14 May 2026 | Direct | ||
| Mikael Dolsten | APLS | Common Stock | Disposed to Issuer | -100% | -14,312 | 0 | 14 May 2026 | Direct | ||
| Mikael Dolsten | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -14,312 | 0 | 14 May 2026 | Direct | ||
| Mikael Dolsten | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -24,135 | 0 | 14 May 2026 | Direct | ||
| Leslie Meltzer | APLS | Common Stock | Disposed to Issuer | -100% | -174,854 | 0 | 14 May 2026 | Direct | ||
| Leslie Meltzer | APLS | Common Stock | Award | 67,830 | 45,220 | 14 May 2026 | Direct | |||
| Leslie Meltzer | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -107,024 | 0 | 14 May 2026 | Direct | ||
| Leslie Meltzer | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -92,592 | 0 | 14 May 2026 | Direct | ||
| Paul R. Fonteyne | APLS | Common Stock | Disposed to Issuer | -100% | -24,188 | 0 | 14 May 2026 | Direct | ||
| Paul R. Fonteyne | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -30,666 | 0 | 14 May 2026 | Direct | ||
| Paul R. Fonteyne | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -112,726 | 0 | 14 May 2026 | Direct | ||
| Timothy Eugene Sullivan | APLS | Common Stock | Disposed to Issuer | -100% | -270,413 | 0 | 14 May 2026 | Direct | ||
| Timothy Eugene Sullivan | APLS | Common Stock | Award | 159,080 | 58,140 | 14 May 2026 | Direct | |||
| Timothy Eugene Sullivan | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -71,492 | 0 | 14 May 2026 | Indirect Owner (The Timothy E Sullivan Irrevocable Trust of 2023) | ||
| Timothy Eugene Sullivan | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -140,945 | 0 | 14 May 2026 | Direct | ||
| Timothy Eugene Sullivan | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -677,390 | 0 | 14 May 2026 | Direct | ||
| Alec Machiels | APLS | Common Stock | Disposed to Issuer | -100% | -20,311 | 0 | 14 May 2026 | Direct | ||
| Alec Machiels | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -150,000 | 0 | 14 May 2026 | Indirect Owner (Spouse Trust) | ||
| Alec Machiels | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -11,950 | 0 | 14 May 2026 | Indirect Owner (Owned by Spouse) | ||
| Alec Machiels | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -250,000 | 0 | 14 May 2026 | Indirect Owner (Bauhaus 1 LLC) | ||
| Alec Machiels | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -384,989 | 0 | 14 May 2026 | Direct | ||
| Alec Machiels | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -242,300 | 0 | 14 May 2026 | Direct | ||
| Pascal Deschatelets | APLS | Common Stock | Disposed to Issuer | -100% | -135,445 | 0 | 14 May 2026 | Direct | ||
| Pascal Deschatelets | APLS | Common Stock | Award | 90,040 | 41,250 | 14 May 2026 | Direct | |||
| Pascal Deschatelets | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -1,177,222 | 0 | 14 May 2026 | Direct | ||
| Pascal Deschatelets | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -588,996 | 0 | 14 May 2026 | Direct | ||
| Gerald Chan | APLS | Common Stock | Disposed to Issuer | -100% | -24,188 | 0 | 14 May 2026 | Direct | ||
| Gerald Chan | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -25,666 | 0 | 14 May 2026 | Direct | ||
| Gerald Chan | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -242,300 | 0 | 14 May 2026 | Direct | ||
| Nur Nicholson | APLS | Common Stock | Disposed to Issuer | -100% | -221,303 | 0 | 14 May 2026 | Direct | ||
| Nur Nicholson | APLS | Common Stock | Award | 133,364 | 45,220 | 14 May 2026 | Direct | |||
| Nur Nicholson | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -116,338 | 0 | 14 May 2026 | Direct | ||
| Nur Nicholson | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -357,594 | 0 | 14 May 2026 | Direct | ||
| Keli Walbert | APLS | Common Stock | Disposed to Issuer | -100% | -16,293 | 0 | 14 May 2026 | Direct | ||
| Keli Walbert | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -17,051 | 0 | 14 May 2026 | Direct | ||
| Keli Walbert | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -30,072 | 0 | 14 May 2026 | Direct | ||
| Mark Jeffrey DeLong | APLS | Common Stock | Disposed to Issuer | -100% | -186,543 | 0 | 14 May 2026 | Direct | ||
| Mark Jeffrey DeLong | APLS | Common Stock | Award | 115,165 | 41,250 | 14 May 2026 | Direct | |||
| Mark Jeffrey DeLong | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -114,591 | 0 | 14 May 2026 | Direct | ||
| Mark Jeffrey DeLong | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -235,736 | 0 | 14 May 2026 | Direct | ||
| Stephanie Monaghan O'Brien | APLS | Common Stock | Disposed to Issuer | -100% | -24,188 | 0 | 14 May 2026 | Direct | ||
| Stephanie Monaghan O'Brien | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -5,750 | 0 | 14 May 2026 | By Spouse | ||
| Stephanie Monaghan O'Brien | APLS | Common Stock | Disposition pursuant to a tender of shares in a change of control transaction | -100% | -25,666 | 0 | 14 May 2026 | Direct | ||
| Stephanie Monaghan O'Brien | APLS | Stock Option (right to buy) | Disposed to Issuer | -100% | -242,300 | 0 | 14 May 2026 | Direct |
* marks a reported price that did not pass the local price check.