ANAB · Insider trading · 13F holders · Congress trades
Anaptysbio, Inc (ANAB)
Who is buying and selling ANAB: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 15
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $249K
- Congress trades, 12 months
- 0
ANAB at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 ANAB insider filed 1 sale worth $249K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
- 15 13F filers hold ANAB among their 50 largest positions, worth $961.0M combined, including Oleg Nodelman. The biggest bets by portfolio weight are Oleg Nodelman (26.4%), Sanofi (10.4%) and Greenhaven Road Investment Management, L.P. (7.5%). In their latest 13Fs, 3 managers opened a new position and 3 added to one.
- No member of Congress has disclosed a trade in ANAB.
- ANAB last closed at $48.64 on Oct 29, 2026.
ANAB insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 ANAB insider filed 1 sale worth $249K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 2, 2026 | Renton Hollings | Director | Sale10b5-1 | 5,000 | $49.87 | $249K | SEC |
Who owns ANAB? Hedge funds and superinvestors
15 13F filers hold ANAB among their 50 largest positions, worth $961.0M combined, including Oleg Nodelman. The biggest bets by portfolio weight are Oleg Nodelman (26.4%), Sanofi (10.4%) and Greenhaven Road Investment Management, L.P. (7.5%). In their latest 13Fs, 3 managers opened a new position and 3 added to one.
Superinvestors holding ANAB: Oleg Nodelman 26.4%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Oleg NodelmanHedge fund | 26.4% | $531.9M | 7,880,094 | +0.0% shares | Q2 2026 |
| Tang Capital Management LLCHedge fund | 4.1% | $89.8M | 1,330,879 | +0.0% shares | Q2 2026 |
| Affinity Asset Advisors, LLCHedge fund | 2.8% | $55.8M | 826,109 | -12.1% shares | Q2 2026 |
| SanofiCorporation | 10.4% | $55.5M | 821,917 | +0.0% shares | Q2 2026 |
| 683 Capital Management, LLCHedge fund | 4.3% | $44.6M | 660,000 | +5.6% shares | Q2 2026 |
| Palo Alto Investors LPHedge fund | 5.6% | $40.7M | 603,489 | -5.4% shares | Q2 2026 |
| First Light Asset Management, LLCHedge fund | 2.4% | $39.3M | 582,004 | +2.9% shares | Q2 2026 |
| Apis Capital Advisors, LLCHedge fund | 3.3% | $33.5M | 497,000 | +108.8% shares | Q2 2026 |
| Sofinnova Investments, Inc.Hedge fund | 1.8% | $33.3M | 493,536 | +98.8% shares | Q2 2026 |
| Coppell Advisory Solutions LLCWealth manager | 1.4% | $16.6M | 3,638 | New | Q2 2026 |
| Greenhaven Road Investment Management, L.P.Hedge fund | 7.5% | $11.5M | 171,059 | New | Q2 2026 |
| Irenic Capital Management LPHedge fund | 0.3% | $4.8M | 70,447 | New | Q2 2026 |
| HighMark Wealth Management LLCWealth manager | 0.9% | $2.7M | 39,716 | -57.8% shares | Q2 2026 |
| Quantedge Capital Pte LtdHedge fund | 0.5% | $702K | 10,400 | — | Q2 2026 |
| Latash Investments, LLCInstitutional asset manager | 0.2% | $297K | 4,393 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 15). Screen ANAB in the grand portfolio →
ANAB stock trades by members of Congress
No member of Congress has disclosed a trade in ANAB.
ANAB questions and answers
Are insiders buying ANAB stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 ANAB insider filed 1 sale worth $249K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own ANAB?
15 13F filers hold ANAB among their 50 largest positions, worth $961.0M combined, including Oleg Nodelman. The biggest bets by portfolio weight are Oleg Nodelman (26.4%), Sanofi (10.4%) and Greenhaven Road Investment Management, L.P. (7.5%). In their latest 13Fs, 3 managers opened a new position and 3 added to one.
Has Congress traded ANAB?
No member of Congress has disclosed a trade in ANAB.
Who is the largest holder of ANAB?
Among 13F filers, Oleg Nodelman reports the largest ANAB position, $531.9M (7,880,094 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Oleg Nodelman's: 26.4% of its portfolio.
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