Annexon, Inc.
Total Trades
59
Buys
21
Sells
33
Largest Trade
N/A
Insiders
10
Institutional Funds
114
Inst. Value
$1M+
Activist Filings
50
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Dananberg Jamie | CHIEF MEDICAL OFFI… | SELL | $15K–$50K | 6K | $5.43 | Mar 4, 2026 |
| Overdorf Michael | EVP & CHIEF BUSINE… | SELL | $15K–$50K | 4K | $5.42 | Mar 4, 2026 |
| Yednock Ted | EVP & CHIEF INNOVA… | SELL | $15K–$50K | 6K | $5.42 | Mar 4, 2026 |
| ARTIS DEAN RICHARD | EVP & CHIEF SCIENT… | SELL | $15K–$50K | 6K | $5.43 | Mar 4, 2026 |
| Lew Jennifer | EVP & CHIEF FINANC… | SELL | $15K–$50K | 6K | $5.42 | Mar 4, 2026 |
| Dananberg Jamie | CHIEF MEDICAL OFFI… | SELL | $15K–$50K | 5K | $5.10 | Feb 20, 2026 |
| Lew Jennifer | EVP & CHIEF FINANC… | SELL | $15K–$50K | 8K | $5.11 | Feb 20, 2026 |
| ARTIS DEAN RICHARD | EVP & CHIEF SCIENT… | SELL | $15K–$50K | 5K | $5.10 | Feb 20, 2026 |
| Yednock Ted | EVP & CHIEF INNOVA… | SELL | $15K–$50K | 8K | $5.11 | Feb 20, 2026 |
| Overdorf Michael | EVP & CHIEF BUSINE… | SELL | $15K–$50K | 6K | $5.10 | Feb 20, 2026 |
| Carson William H. | Director | BUY | $15K–$50K | 4K | $5.02 | Jan 2, 2026 |
| Choi Jung | Director | BUY | $100K–$500K | 33K | $4.19 | Dec 3, 2025 |
| Carson William H. | Director | BUY | $15K–$50K | 4K | $4.47 | Dec 3, 2025 |
| Satter Muneer A | Director | BUY | $1M+ | 823K | $4.38 | Nov 22, 2025 |
| Satter Muneer A | Director | BUY | $1M+ | 1.5M | $3.37 | Nov 20, 2025 |
| Carson William H. | Director | BUY | $1K–$15K | 4K | $3.17 | Oct 31, 2025 |
| Carson William H. | Director | BUY | $1K–$15K | 4K | $3.05 | Oct 2, 2025 |
| Carson William H. | Director | BUY | $1K–$15K | 4K | $2.09 | Sep 4, 2025 |
| Carson William H. | Director | BUY | $1K–$15K | 4K | $2.43 | Aug 1, 2025 |
| Yednock Ted | EVP & CHIEF INNOVA… | SELL | $1K–$15K | 1K | $2.58 | Jul 16, 2025 |
| Lew Jennifer | EVP & CHIEF FINANC… | SELL | $1K–$15K | 1K | $2.58 | Jul 16, 2025 |
| Overdorf Michael | EVP & CHIEF BUSINE… | SELL | $1K–$15K | 853 | $2.61 | Jul 16, 2025 |
| Carson William H. | Director | BUY | $1K–$15K | 4K | $2.46 | Jul 1, 2025 |
| Dananberg Jamie | CHIEF MEDICAL OFFI… | SELL | $15K–$50K | 6K | $2.96 | Feb 20, 2025 |
| ARTIS DEAN RICHARD | EVP & CHIEF SCIENT… | SELL | $15K–$50K | 6K | $2.97 | Feb 20, 2025 |
| Yednock Ted | EVP & CHIEF INNOVA… | SELL | $15K–$50K | 8K | $2.91 | Feb 20, 2025 |
| Overdorf Michael | EVP & CHIEF BUSINE… | SELL | $15K–$50K | 7K | $2.95 | Feb 20, 2025 |
| Lew Jennifer | EVP & CHIEF FINANC… | SELL | $15K–$50K | 7K | $2.92 | Feb 20, 2025 |
| Carson William H. | Director | BUY | $15K–$50K | 3K | $5.33 | Dec 4, 2024 |
| Yednock Ted | EVP & CHIEF INNOVA… | SELL | $15K–$50K | 5K | $7.41 | Oct 17, 2024 |
| Yednock Ted | EVP & CHIEF INNOVA… | EXERCISE | $1K–$15K | 5K | $1.85 | Oct 17, 2024 |
| Carson William H. | Director | BUY | $15K–$50K | 3K | $5.97 | Oct 2, 2024 |
| Yednock Ted | EVP & CHIEF INNOVA… | SELL | $15K–$50K | 6K | $5.95 | Aug 30, 2024 |
| Carson William H. | Director | BUY | $15K–$50K | 3K | $5.00 | Jul 2, 2024 |
| Carson William H. | Director | BUY | $15K–$50K | 3K | $4.83 | Jun 5, 2024 |
| Carson William H. | Director | BUY | $1K–$15K | 3K | $4.68 | May 3, 2024 |
| Carson William H. | Director | BUY | $15K–$50K | 3K | $6.07 | Apr 10, 2024 |
| Lew Jennifer | EVP & CHIEF FINANC… | GRANT | N/A | 39K | — | Feb 21, 2024 |
| Lew Jennifer | EVP & CHIEF FINANC… | SELL | $1K–$15K | 3K | $5.53 | Feb 21, 2024 |
| Yednock Ted | EVP & CHIEF INNOVA… | GRANT | N/A | 39K | — | Feb 21, 2024 |
| Yednock Ted | EVP & CHIEF INNOVA… | SELL | $1K–$15K | 3K | $5.51 | Feb 21, 2024 |
| Overdorf Michael | EVP & CHIEF BUSINE… | SELL | $1K–$15K | 2K | $5.48 | Feb 21, 2024 |
| Overdorf Michael | EVP & CHIEF BUSINE… | GRANT | N/A | 39K | — | Feb 21, 2024 |
| Overdorf Michael | EVP & CHIEF BUSINE… | SELL | $1K–$15K | 1K | $5.53 | Feb 15, 2024 |
| Love Douglas | PRESIDENT AND CEO | SELL | $15K–$50K | 6K | $5.54 | Feb 15, 2024 |
| Lew Jennifer | EVP & CHIEF FINANC… | SELL | $1K–$15K | 2K | $5.54 | Feb 15, 2024 |
| Yednock Ted | EVP & CHIEF INNOVA… | SELL | $1K–$15K | 2K | $5.54 | Feb 15, 2024 |
| Overdorf Michael | EVP & Chief Busine… | SELL | $1K–$15K | 978 | $3.84 | Jan 23, 2024 |
| Lew Jennifer | CFO | SELL | $1K–$15K | 1K | $3.84 | Jan 23, 2024 |
| Yednock Ted | EVP & Chief Innova… | EXERCISE | $15K–$50K | 21K | $1.63 | Dec 29, 2023 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 114 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Redmile Group, LLC | 10.1M | $1M+ | SH |
| VANGUARD GROUP INC | 6.9M | $1M+ | SH |
| Bain Capital Life Sciences Investors, LLC | 5.2M | $1M+ | SH |
| STATE STREET CORP | 4.7M | $1M+ | SH |
| BALYASNY ASSET MANAGEMENT L.P. | 3.3M | $1M+ | SH |
| Longaeva Partners L.P. | 3.1M | $1M+ | SH |
| MAK CAPITAL ONE LLC | 3.0M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5M | $1M+ | SH |
| Palo Alto Investors LP | 2.4M | $1M+ | SH |
| SPHERA FUNDS MANAGEMENT LTD. | 1.3M | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.1M | $1M+ | SH |
| J. Goldman & Co LP | 994K | $1M+ | SH |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 903K | $1M+ | SH |
| ACADIAN ASSET MANAGEMENT LLC | 861K | $1M+ | SH |
| RENAISSANCE TECHNOLOGIES LLC | 803K | $1M+ | SH |
| AQR CAPITAL MANAGEMENT LLC | 761K | $1M+ | SH |
| SIRIOS CAPITAL MANAGEMENT L P | 710K | $1M+ | SH |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 684K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 651K | $1M+ | SH |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC | 642K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 17, 2026
9.9%
15.4M shares
SC 13G/A · Feb 5, 2026
7.1%
10.2M shares
SC 13G/A · Jan 21, 2026
6.1%
8.9M shares
SC 13D/A · Nov 22, 2025
7.2%
10.4M shares
SC 13G/A · Nov 5, 2025
10.1%
11.1M shares
SC 13G · Oct 30, 2025
5.3%
5.8M shares
SC 13G/A · Aug 14, 2025
0.0%
0 shares
SC 13G/A · Aug 6, 2025
14.3%
15.7M shares
Point72 Asset Management, L.P.
SC 13G/A · May 15, 2025
0.1%
95K shares
SC 13G/A · Apr 30, 2025
4.9%
5.4M shares
SC 13G · Apr 28, 2025
6.0%
6.6M shares
SC 13G/A · Feb 14, 2025
4.9%
5.2M shares
SC 13G · Jan 31, 2025
5.2%
5.5M shares
SC 13G/A · Dec 6, 2024
13.1%
13.9M shares
SC 13G/A · Nov 15, 2024
4.9%
5.2M shares
SC 13G/A · Nov 14, 2024
2.7%
2.9M shares
Bain Capital Life Sciences Fund, L.P. 2
SC 13G/A · Nov 14, 2024
2.1%
2.2M shares
Biotechnology Value Fund, L.P.
SC 13G/A · Nov 14, 2024
4.5%
4.8M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Nov 14, 2024
1.0%
1.0M shares
SC 13G/A · Nov 12, 2024
8.1%
8.6M shares
Adage Capital Management, L.P.
SC 13G/A · Nov 12, 2024
3.3%
3.5M shares
SC 13G · Nov 8, 2024
7.2%
7.6M shares
SC 13G · Oct 22, 2024
7.2%
7.6M shares
SC 13G · Apr 23, 2024
5.2%
4.7M shares
Venrock Healthcare Capital Partners II, L.P.
SC 13G/A · Feb 15, 2024
0.0%
0 shares
SC 13G/A · Feb 14, 2024
1.3%
6 shares
SC 13G/A · Feb 14, 2024
9.9%
8.1M shares
Fairmount Funds Management LLC
SC 13G/A · Feb 14, 2024
0.4%
323K shares
Eventide Asset Management, LLC
SC 13G/A · Feb 14, 2024
0.0%
0 shares
Biotechnology Value Fund, L.P.
SC 13G/A · Feb 14, 2024
4.7%
3.7M shares
SC 13G/A · Feb 14, 2024
8.3%
6.9M shares
Bain Capital Life Sciences Fund, L.P. 2
SC 13G/A · Feb 13, 2024
10.0%
8.1M shares
Point72 Asset Management, L.P.
SC 13G · Feb 12, 2024
6.2%
4.9M shares
SC 13G · Jan 10, 2024
12.4%
9.7M shares
SC 13G/A · Aug 8, 2023
4.4%
2.3M shares
SC 13G · Jun 22, 2023
5.8%
3.1M shares
Bain Capital Life Sciences Fund, L.P.
SC 13G/A · May 30, 2023
5.5%
2.9M shares
SC 13G · Feb 27, 2023
4.9%
6 shares
SC 13D/A · Feb 17, 2023
15.0%
7.7M shares
SC 13G/A · Feb 14, 2023
9.9%
4.9M shares
Venrock Healthcare Capital Partners II, L.P.
SC 13G/A · Feb 14, 2023
10.0%
4.9M shares
Fairmount Funds Management LLC
SC 13G/A · Feb 14, 2023
7.7%
3.7M shares
Eventide Asset Management, LLC
SC 13G/A · Feb 14, 2023
7.6%
3.6M shares
Bain Capital Life Sciences Fund, L.P.
SC 13G/A · Feb 14, 2023
10.0%
4.9M shares
AllianceBernstein L.P. 13-4064930
SC 13G/A · Feb 14, 2023
0.0%
0 shares
Biotechnology Value Fund, L.P.
SC 13G/A · Feb 13, 2023
4.3%
2.0M shares
SC 13G · Feb 3, 2023
2.6%
1.2M shares
SC 13G/A · Feb 1, 2023
6.4%
3.1M shares
SC 13G/A · Jul 18, 2022
9.9%
4.9M shares
SC 13D · Jul 18, 2022
10.4%
5.0M shares