ATTO · Insider trading · 13F holders · Congress trades
Attovia Therapeutics, Inc. (ATTO)
Who is buying and selling ATTO: 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
- 0
- Insider buys, 90 days
- $52.4M
- Insider sales, 90 days
- $4.5M
- Congress trades, 12 months
- 0
ATTO at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 6 ATTO insiders filed 6 open-market purchases worth $52.4M and 2 sales worth $4.5M on SEC Form 4.
- No 13F filer reports ATTO among its 50 largest positions.
- No member of Congress has disclosed a trade in ATTO.
- ATTO last closed at $15.27 on Oct 29, 2026.
ATTO insider trading
Between Aug 1, 2026 and Oct 29, 2026, 6 ATTO insiders filed 6 open-market purchases worth $52.4M and 2 sales worth $4.5M on SEC Form 4.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 13, 2026 | Walsh Colin | Director | Buy | 585,000 | $17.58 | $10.3M | SEC |
| Aug 13, 2026 | Goldman Sachs Group INC | Former 10% Owner | Buy | 585,000 | $17.58 | $10.3M | SEC |
| Aug 13, 2026 | Walsh Colin | Director | Sale | 105,807 | $21.28 | $2.3M | SEC |
| Aug 13, 2026 | Goldman Sachs Group INC | Former 10% Owner | Sale | 105,807 | $21.28 | $2.3M | SEC |
| Aug 10, 2026 | venBio Global Strategic Fund IV, L.P. | 10% Owner | Buy | 382,352 | $17.00 | $6.5M | SEC |
| Aug 7, 2026 | Redmile Group, LLC | 10% Owner | Buy | 600,000 | $17.00 | $10.2M | SEC |
| Aug 7, 2026 | Sanofi | 10% Owner | Buy | 300,000 | $17.00 | $5.1M | SEC |
| Aug 6, 2026 | Frazier Life Sciences XI, L.P. | 10% Owner | Buy | 588,235 | $17.00 | $10.0M | SEC |
Who owns ATTO? Hedge funds and superinvestors
No 13F filer reports ATTO among its 50 largest positions.
ATTO stock trades by members of Congress
No member of Congress has disclosed a trade in ATTO.
ATTO questions and answers
Are insiders buying ATTO stock?
Between Aug 1, 2026 and Oct 29, 2026, 6 ATTO insiders filed 6 open-market purchases worth $52.4M and 2 sales worth $4.5M on SEC Form 4.
Which hedge funds own ATTO?
No 13F filer reports ATTO among its 50 largest positions.
Has Congress traded ATTO?
No member of Congress has disclosed a trade in ATTO.
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