ATTO
Attovia Therapeutics, Inc. · Healthcare · Market cap $647.3M
Insiders bought $47.9M net in the last 90 days ·2 sellers, 6 buyers· latest Form 4 filed Aug 28, 2026
Insider Buying
$52.4M
reported purchases (SEC code P)
Insider Selling
$4.5M
reported sales (SEC code S)
Unique Insiders
6
in the rolling window
Latest filing
Aug 28, 2026
WALSH COLIN
Attovia Therapeutics, Inc. (ATTO) has 9 SEC Form 4 filings (123 transaction rows) in the rolling window, disclosed by 6 distinct insiders. Most recent filing: Aug 28, 2026.
Inside the rolling window, 6 insiders at Attovia Therapeutics, Inc. reported 8 open-market purchases totaling $52.4M and 2 open-market sales totaling $4.5M. The most active filer is Director WALSH COLIN with 3 filings. Insiders have net bought $47.9M over the trailing 6 months. The largest single insider purchase in this window was $10.2M by 10% Owner Redmile Group, LLC on Aug 6, 2026. The most recent open-market filing is a purchase of 85,000 shares by Director WALSH COLIN, dated Aug 5, 2026, worth $1.8M.
- Industry:Biotechnology
- HQ:San Carlos, CA, US
- IPO:2026-08-05
| Source | |||||||
|---|---|---|---|---|---|---|---|
| Director | Purchase | 85,000 | $1.8M | Aug 28 | -31.5% | SEC ↗ | |
| Director | Sale | 105,607 | $2.2M | Aug 28 | -31.5% | SEC ↗ | |
| Director | Purchase | 500,000 | $8.5M | Aug 28 | — | SEC ↗ | |
| Former 10% Owner | Purchase | 85,000 | $1.8M | Aug 28 | — | SEC ↗ | |
| Former 10% Owner | Sale | 105,607 | $2.2M | Aug 28 | — | SEC ↗ | |
| Former 10% Owner | Purchase | 500,000 | $8.5M | Aug 28 | — | SEC ↗ | |
venBio Global Strategic Fund IV, L.P.First filing | 10% Owner | Purchase | 382,352 | $6.5M | Aug 10 | — | SEC ↗ |
Redmile Group, LLCFirst in 4 months | 10% Owner | Purchase | 600,000 | $10.2M | Aug 8 | — | SEC ↗ |
SanofiFirst filing | 10% Owner | Purchase | 300,000 | $5.1M | Aug 7 | — | SEC ↗ |
Frazier Life Sciences XI, L.P.First filing | 10% Owner | Purchase | 588,235 | $10.0M | Aug 6 | — | SEC ↗ |
Earnings: last 7 quarters
Frequently asked questions
How many SEC Form 4 insider filings does ATTO have?
Attovia Therapeutics, Inc. (ATTO) has 9 SEC Form 4 filings (123 transaction rows) in the rolling 365-day window, disclosed by 6 distinct insiders. Most recent filing: Aug 28, 2026.
When was the most recent SEC Form 4 filing for ATTO?
The most recent Form 4 filing for ATTO on Tracefour is dated Aug 28, 2026.
Who is the most active insider at ATTO?
The most active SEC Form 4 filer at ATTO in the rolling window is Director WALSH COLIN, with 3 filings.
What is the net insider flow at ATTO over the last 6 months?
Over the trailing 180 days, insiders at ATTO have net bought $47.9M based on SEC Form 4 disclosures.
What was the largest insider purchase at ATTO?
The largest single insider open-market purchase at ATTO in the rolling window was $10.2M by 10% Owner Redmile Group, LLC on 2026-08-06.
What is the total insider buy and sell value at ATTO in the current window?
Inside the rolling window, insiders at ATTO bought $52.4M and sold $4.5M based on SEC Form 4 filings.
Can I get alerts for ATTO insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at Attovia Therapeutics, Inc. (ATTO). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
Attovia Therapeutics, Inc. is in the Healthcare sector.