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Apellis Pharmaceuticals, Inc. (APLS) institutional ownership

Latest close $41.03 May 15, 2026
Market cap$3.2B 52-week range SectorHealthcare
Funds holding · Q1 2026
355
reported APLS position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net bought $294M
209 buyers · 146 sellers

Apellis Pharmaceuticals, Inc. (APLS) price and institutional activity

Dates

Q1 2026

$1.3B bought by 209 investors
BlackRock$157MPentwater Capital Management LP$113M +207 more
$987M sold by 146 investors
Wellington Management Group LLP-$269MRtw Investments, LP-$86M +144 more
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Bought Sold Totals per quarter; hover a bar for the names.

Apellis Pharmaceuticals, Inc. (APLS) institutional activity · 355

Investor Type Est. change Change Δ Own Date
Wellington Management Group LLP · Reduced −$269M
Change −12.5M Δ Own −98.0% Date Q1 2026
Wellington Management Group LLP Reduced· Q1 2026 −$269M −12.5M −98.0% Q1 2026
BlackRock · Added +$157M
Change +7.3M Date Q1 2026
BlackRock Added· Q1 2026 +$157M +7.3M Q1 2026
Pentwater Capital Management LP · New +$113M
Change +5.2M Date Q1 2026
Pentwater Capital Management LP New· Q1 2026 +$113M +5.2M Q1 2026
Rtw Investments, LP · Reduced −$86M
Change −4.0M Date Q1 2026
Rtw Investments, LP Reduced· Q1 2026 −$86M −4.0M Q1 2026
Polar Capital Holdings PLC · Exited −$80M
Change −3.7M Δ Own −100.0% Date Q1 2026
Polar Capital Holdings PLC Exited· Q1 2026 −$80M −3.7M −100.0% Q1 2026
Point72 Asset Management, L.P. · Added +$77M
Change +3.6M Δ Own +600.0% Date Q1 2026
Point72 Asset Management, L.P. Added· Q1 2026 +$77M +3.6M +600.0% Q1 2026
Hbk Investments L P · New +$76M
Change +3.5M Date Q1 2026
Hbk Investments L P New· Q1 2026 +$76M +3.5M Q1 2026
Deep Track Capital, LP · Reduced −$69M
Change −3.2M Date Q1 2026
Deep Track Capital, LP Reduced· Q1 2026 −$69M −3.2M Q1 2026
Siren, L.L.C. · Exited −$56M
Change −2.6M Δ Own −100.0% Date Q1 2026
Siren, L.L.C. Exited· Q1 2026 −$56M −2.6M −100.0% Q1 2026
Orbimed Advisors LLC · Exited −$52M
Change −2.4M Δ Own −100.0% Date Q1 2026
Orbimed Advisors LLC Exited· Q1 2026 −$52M −2.4M −100.0% Q1 2026
State Street · Added +$48M
Change +2.2M Date Q1 2026
State Street Added· Q1 2026 +$48M +2.2M Q1 2026
UBS Group AG · Added +$44M
Change +2.0M Date Q1 2026
UBS Group AG Added· Q1 2026 +$44M +2.0M Q1 2026
JPMorgan Chase & Co · Added +$41M
Change +1.9M Date Q1 2026
JPMorgan Chase & Co Added· Q1 2026 +$41M +1.9M Q1 2026
Balyasny Asset Management L.P. · Added +$40M
Change +1.9M Date Q1 2026
Balyasny Asset Management L.P. Added· Q1 2026 +$40M +1.9M Q1 2026
AQR Capital Management LLC · Reduced −$40M
Change −1.8M Date Q1 2026
AQR Capital Management LLC Reduced· Q1 2026 −$40M −1.8M Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 355

Famous investor activity in Apellis Pharmaceuticals, Inc. (APLS)

Apellis Pharmaceuticals, Inc. (APLS) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Dunlop A. Sinclair · Director Other Form 4 events -162K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Dunlop A. Sinclair Director Other Form 4 events -162K 0 May 14, 2026 May 14, 2026
Dunlop A. Sinclair · Director 11 operations -123K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Dunlop A. Sinclair Director 11 operations -123K 0 May 14, 2026 May 14, 2026
Chopas James George · Officer Other Form 4 events -66K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Chopas James George Officer Other Form 4 events -66K 0 May 14, 2026 May 14, 2026
Chopas James George · Officer 14 operations -158K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Chopas James George Officer 14 operations -158K 0 May 14, 2026 May 14, 2026
Chopas James George · Officer 4 operations 38K
Owned 8K Trade date May 14, 2026 Filed date May 14, 2026
Chopas James George Officer 4 operations 38K 8K May 14, 2026 May 14, 2026
Dolsten Mikael · Director Other Form 4 events -14K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Dolsten Mikael Director Other Form 4 events -14K 0 May 14, 2026 May 14, 2026
Dolsten Mikael · Director 2 operations -38K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Dolsten Mikael Director 2 operations -38K 0 May 14, 2026 May 14, 2026
Meltzer Leslie · Officer Other Form 4 events -107K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Meltzer Leslie Officer Other Form 4 events -107K 0 May 14, 2026 May 14, 2026
Meltzer Leslie · Officer 5 operations -267K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Meltzer Leslie Officer 5 operations -267K 0 May 14, 2026 May 14, 2026
Meltzer Leslie · Officer 2 operations 68K
Owned 45K Trade date May 14, 2026 Filed date May 14, 2026
Meltzer Leslie Officer 2 operations 68K 45K May 14, 2026 May 14, 2026
Fonteyne Paul R. · Director Other Form 4 events -31K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Fonteyne Paul R. Director Other Form 4 events -31K 0 May 14, 2026 May 14, 2026
Fonteyne Paul R. · Director 12 operations -137K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Fonteyne Paul R. Director 12 operations -137K 0 May 14, 2026 May 14, 2026
Sullivan Timothy Eugene · CFO 2 operations -212K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Sullivan Timothy Eugene CFO 2 operations -212K 0 May 14, 2026 May 14, 2026
Sullivan Timothy Eugene · CFO 17 operations -948K
Owned 0 Trade date May 14, 2026 Filed date May 14, 2026
Sullivan Timothy Eugene CFO 17 operations -948K 0 May 14, 2026 May 14, 2026
Sullivan Timothy Eugene · CFO 4 operations 159K
Owned 58K Trade date May 14, 2026 Filed date May 14, 2026
Sullivan Timothy Eugene CFO 4 operations 159K 58K May 14, 2026 May 14, 2026
15 of 35
15 of 35 Sign in to continue to older insider transactions.

Apellis Pharmaceuticals, Inc. (APLS) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Morningside Venture Investments Ltd 12.8M
% of shares outstanding 13.2% Filing date Feb 14, 2022
Morningside Venture Investments Ltd 12.8M 13.2% Feb 14, 2022
Wellington Management Group LLP 15.6M
% of shares outstanding 12.8% Filing date Nov 8, 2024
Wellington Management Group LLP 15.6M 12.8% Nov 8, 2024
Avoro Capital Advisors LLC 13.4M
% of shares outstanding 9.9% Filing date Feb 14, 2024
Avoro Capital Advisors LLC 13.4M 9.9% Feb 14, 2024
Ecor1 Capital, LLC 11.2M
% of shares outstanding 9.4% Filing date Feb 14, 2024
Ecor1 Capital, LLC 11.2M 9.4% Feb 14, 2024
Vanguard Group Inc 9.6M
% of shares outstanding 8.1% Filing date Feb 13, 2024
Vanguard Group Inc 9.6M 8.1% Feb 13, 2024
State Street Corp 6.8M
% of shares outstanding 5.4% Filing date May 12, 2026
State Street Corp 6.8M 5.4% May 12, 2026
Blackrock, Inc. 6.2M
% of shares outstanding 5.1% Filing date Nov 8, 2024
Blackrock, Inc. 6.2M 5.1% Nov 8, 2024
BlackRock Inc. 5.7M
% of shares outstanding 4.9% Filing date Jul 7, 2023
BlackRock Inc. 5.7M 4.9% Jul 7, 2023
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Apellis Pharmaceuticals, Inc. (APLS) ownership FAQ

Who owns APLS?

355 reporting institutions disclosed APLS position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.