Annexon Inc

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Annexon Inc
TickerANNX
CIK #0001528115
CUSIP03589W102
SectorLife Sciences - Pharmaceutical Preparations
Address180 Kimball Way Suite 200, South San Francisco, CA 94080
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Annexon Inc 2022-07-22 130.5 M Exemption: 506(b) · Duration: One year or less · Commission: $6,719,478 · Revenue: Decline to Disclose
CIK Filing 2011 - 2026
[0001528115] 10-K
[0001528115] 10-Q
[0001528115] 3
[0001528115] 4
[0001528115] 8-K
[0001528115] D
[0001528115] SC 13D
[0001528115] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Vanguard Group Inc Annexon Inc [2025-10-30] 0.0
Logos Global Management LP Annexon Inc [2025-04-28] 0.0
Vanguard Group Inc Annexon Inc [2025-01-31] 0.0
BlackRock Inc Annexon Inc [2024-11-08] 7.2
BlackRock Inc Annexon Inc [2024-10-22] 7.2
BB Biotech AG Annexon Inc [2024-04-22] 81945.2
Point72 Asset Management LP Annexon Inc [2024-02-12] 6.2
FMR LLC Annexon Inc [2024-01-10] 0.0
Logos Global Management LP Annexon Inc [2023-06-22] 5.8
Citadel Advisors LLC Annexon Inc [2023-02-27] 4.9
Pictet Asset Management Sa Annexon Inc [2023-02-03] 2.59
Adage Capital Partners GP LLC Annexon Inc [2022-07-18] 8.68
Satter Muneer A Annexon Inc [2022-07-18] 10.4
BlackRock Inc Annexon Inc [2022-07-08] 2.5
Venrock Healthcare Capital Partners II LP Annexon Inc [2022-06-23] 5.0
Biotechnology Value Fund L P Annexon Inc [2022-05-26] 4.7
Fairmount Funds Management LLC Annexon Inc [2022-04-21] 6.7
Federated Hermes Inc Annexon Inc [2022-02-14] 5.28
Price T Rowe Associates Inc /MD/ Annexon Inc [2022-02-14] 7.4
AllianceBernstein LP Annexon Inc [2022-02-14] 5.4
Pictet Asset Management Sa Annexon Inc [2022-02-10] 5.63
Redmile Group LLC Annexon Inc [2021-02-16] 0.04
Bain Capital Life Sciences Fund LP Annexon Inc [2021-02-16] 7.7
New Enterprise Associates 15 LP Annexon Inc [2021-02-12] 6.5
Eventide Asset Management LLC Annexon Inc [2021-02-12] 5.3
Satter Muneer A Annexon Inc [2021-02-12] 5.1
FMR LLC Annexon Inc [2021-02-08] 0.0
BlackRock Inc Annexon Inc [2021-02-02] 6.5
Novartis BioVentures Ltd Annexon Inc [2021-01-29] 5.52
Zone II Healthcare Holdings LLC Annexon Inc [2020-08-07] 4.1
Blackstone Holdings II LP Annexon Inc [2020-08-07] 7.6
Citadel Advisors LLC Annexon Inc [2020-08-07] 5.5
Flynn James E Annexon Inc [2020-07-28] 2.25
Form 3/4/5 Filer 2011 - 2026
Yednock Ted
Annexon Inc
Jones William A Jr
Satter Muneer A
Waddill William D
Cockroft Bettina M
Carson William H
Choi Jung
Dananberg Jamie
Artis Dean Richard
Overdorf Michael
Lew Jennifer
Love Douglas
Wiggans Thomas G
Bain Capital Life Sciences Fund LP
BCIP Life Sciences Associates LP
Bain Capital Life Sciences Partners LP
Bain Capital Life Sciences Investors LLC
Mattheakis Larry
Keswani Sanjay Chandru
Sun Ricky
Green Jeremy
Redmile Group LLC
Clarus Lifesciences III LP
Blackstone Holdings I/II GP Inc
Blackstone Group Inc
Blackstone Group Management LLC
Schwarzman Stephen A
Blackstone Clarus III LLC
Blackstone Holdings II LP
Clarus Ventures III GP LP
Deerfield Private Design Fund IV LP
Deerfield Management Company LP
Deerfield Capital LP
Deerfield Partners LP
Flynn James E
Deerfield Mgmt IV LP
Schwartz Jeffrey Lawrence
Koppel Adam
Sandell Scott D
Makower Joshua
Makhzoumi Mohamad
Florence Anthony A Jr
Baskett Forest
Gallagher Carol Giltner
NEA Partners 15 LP
NEA 15 GP LLC
New Enterprise Associates 15 LP
Cunningham Emmett
Young William
Sonsini Peter W
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Carson William H
Common Stock
2026-03-10 Buy 8,000 $5.67 45,360
Overdorf Michael
Common Stock
2026-03-02 Sell 4,339 $5.42 23,517
Yednock Ted
Common Stock
2026-03-02 Sell 5,566 $5.42 30,168
Artis Dean Richard
Common Stock
2026-03-02 Sell 5,894 $5.43 32,004
Lew Jennifer
Common Stock
2026-03-02 Sell 5,565 $5.42 30,162
Dananberg Jamie
Common Stock
2026-03-02 Sell 5,820 $5.43 31,603
Lew Jennifer
Stock Option (Right to Buy) · derivative
2026-02-19 Grant 250,000 $0.00
Dananberg Jamie
Common Stock
2026-02-19 Grant 56,250 $0.00
Overdorf Michael
Common Stock
2026-02-19 Grant 62,500 $0.00
Artis Dean Richard
Common Stock
2026-02-19 Grant 62,500 $0.00
Yednock Ted
Common Stock
2026-02-19 Grant 62,500 $0.00
Lew Jennifer
Common Stock
2026-02-19 Grant 62,500 $0.00
Love Douglas
Stock Option (Right to Buy) · derivative
2026-02-19 Grant 1,250,000 $0.00
Dananberg Jamie
Stock Option (Right to Buy) · derivative
2026-02-19 Grant 225,000 $0.00
Overdorf Michael
Stock Option (Right to Buy) · derivative
2026-02-19 Grant 250,000 $0.00
Artis Dean Richard
Stock Option (Right to Buy) · derivative
2026-02-19 Grant 250,000 $0.00
Yednock Ted
Stock Option (Right to Buy) · derivative
2026-02-19 Grant 250,000 $0.00
Yednock Ted
Common Stock
2026-02-18 Sell 7,857 $5.11 40,149
Overdorf Michael
Common Stock
2026-02-18 Sell 6,225 $5.10 31,747
Dananberg Jamie
Common Stock
2026-02-18 Sell 5,290 $5.10 26,979
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 217 156,049,960
2025-12-31 168 137,063,687
2025-09-30 144 101,328,094
2025-06-30 129 99,783,244
2025-03-31 149 99,736,570
2024-12-31 154 112,367,036
2024-09-30 143 111,224,167
2024-06-30 144 118,196,786
2024-03-31 130 98,548,519
2023-12-31 101 80,185,104
2023-09-30 95 53,974,519
2023-06-30 97 53,913,125
Form 13F Holdings
Firm Period DFND Voting Shares
Y-Intercept Hong Kong Ltd [2026-06-30] SOLE 734,585 734,585
Hennion & Walsh Asset Management Inc [2026-06-30] SOLE 507,050 507,050
Diversified Trust Co [2026-06-30] SOLE 0 61,797
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 641 20,253
Balefire LLC [2026-06-30] SOLE 0 15,011
Merit Financial Group LLC [2026-06-30] OTR 0 9,587
Merit Financial Group LLC [2026-06-30] SOLE 16 1,516
Farther Finance Advisors LLC [2026-06-30] SOLE 0 738
Gamma Investing LLC [2026-06-30] DFND 570 570
IFP Advisors LLC [2026-06-30] SOLE 569 569
Fortitude Family Office LLC [2026-06-30] SOLE 483 483
True Wealth Design LLC [2026-06-30] SOLE 0 283
Physician Wealth Advisors Inc [2026-06-30] SOLE 0 269
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