Attovia Therapeutics (ATTO) stock: insider trades, news & valuation
Health Care · Strong buying
Close · Oct 9, 2026
$16.21
-0.6% on the day
-26.0% over 12 months
52-week range $16.21 – $25.55
Share price and insider trades
ATTO closeInsider buyInsider sale
Bought, 12 months$72.9M
Sold, 12 months$9.0M
Insiders buying7
Insiders selling3
Attovia Therapeutics insider trading at a glance (Oct 9, 2026): in the past 12 months, 7 insiders bought $72.9M and 3 sold $9.0M of ATTO stock on the open market, including a cluster buy that began Aug 5, 2026.
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ATTO insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | $72.9M | 13 | $9.0M | 92 |
Valuation, profit and volume
Pick score 53/100P/E (trailing)n/aSector median 24.7
Market value$740MBiotechnology
Profit margin0.0%Revenue growth —
Volume vs. 50-day—Last 5 sessions
Insiders' paper profit−$4.7MOn all tracked purchases -6.4%
Summary
Over the past 12 months, 7 Attovia Therapeutics, Inc. insiders reported open-market purchases totaling $72.9M, while 3 insiders reported sales totaling $9.0M. The most recent cluster buy began on Aug 5, 2026, when 7 insiders bought a combined $72.9M. 0 of 92 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
ATTO news sentiment trend
Weekly headline tone (positive minus negative headlines) over 13 weeks. Green dots mark weeks with insider buying.
Last 30 days: 1 headlines, 0 positive, 1 negative
Tone is scored from headline wording only. It describes the news, not where the stock is going.
ATTO stock news and SEC filings
Recent 8-K filings and headlines. Tone is scored from the headline wording; “Policy” marks regulatory, trade or government topics.
- 8-K Earnings release
- 8-K Item 5.03
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Buy | 500,0003,020,632 held (+20%) | $17.00 | $8.5M | -4.6% | — |
| Aug 28SEC | Colin WalshDirector | Buy | 500,0003,020,632 held (+20%) | $17.00 | $8.5M | -4.6% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Buy | 85,000new position | $21.00 | $1.8M | -22.8% | — |
| Aug 28SEC | Colin WalshDirector | Buy | 85,000new position | $21.00 | $1.8M | -22.8% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 76,418 | $21.04 | $1.6M | -23.0% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 76,418 | $21.04 | $1.6M | -23.0% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 6,97067,900 held (−9%) | $22.03 | $154K | -26.4% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 6,97067,900 held (−9%) | $22.03 | $154K | -26.4% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 6,76355,611 held (−11%) | $21.61 | $146K | -25.0% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 6,76355,611 held (−11%) | $21.61 | $146K | -25.0% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 3,40277,075 held (−4%) | $22.02 | $75K | -26.4% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 3,40277,075 held (−4%) | $22.02 | $75K | -26.4% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 1,55680,477 held (−2%) | $22.06 | $34K | -26.5% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 1,55680,477 held (−2%) | $22.06 | $34K | -26.5% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 1,33282,233 held (−2%) | $22.03 | $29K | -26.4% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 1,33282,233 held (−2%) | $22.03 | $29K | -26.4% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 1,16362,474 held (−2%) | $22.19 | $26K | -26.9% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 1,16362,474 held (−2%) | $22.19 | $26K | -26.9% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 1,18066,320 held (−2%) | $21.84 | $26K | -25.8% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 1,18066,320 held (−2%) | $21.84 | $26K | -25.8% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 1,04065,280 held (−2%) | $22.05 | $23K | -26.5% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 1,04065,280 held (−2%) | $22.05 | $23K | -26.5% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 98884,012 held (−1%) | $22.03 | $22K | -26.4% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 98884,012 held (−1%) | $22.03 | $22K | -26.4% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 75375,542 held (−1%) | $21.97 | $17K | -26.2% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 75375,542 held (−1%) | $21.97 | $17K | -26.2% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 70063,637 held (−1%) | $22.07 | $15K | -26.6% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 70063,637 held (−1%) | $22.07 | $15K | -26.6% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 67274,870 held (−1%) | $22.02 | $15K | -26.4% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 67274,870 held (−1%) | $22.02 | $15K | -26.4% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 48076,395 held (−1%) | $21.55 | $10K | -24.8% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 48076,395 held (−1%) | $21.55 | $10K | -24.8% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 44783,565 held (−1%) | $21.87 | $10K | -25.9% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 44783,565 held (−1%) | $21.87 | $10K | -25.9% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 44364,537 held (−1%) | $21.78 | $10K | -25.6% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 44364,537 held (−1%) | $21.78 | $10K | -25.6% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 40067,500 held (−1%) | $22.02 | $9K | -26.4% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 40067,500 held (−1%) | $22.02 | $9K | -26.4% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 30064,980 held (−0%) | $20.84 | $6K | -22.2% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 30064,980 held (−0%) | $20.84 | $6K | -22.2% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 20076,875 held (−0%) | $22.10 | $4K | -26.7% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 20076,875 held (−0%) | $22.10 | $4K | -26.7% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 20082,033 held (−0%) | $22.05 | $4K | -26.5% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 20064,337 held (−0%) | $22.05 | $4K | -26.5% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 20082,033 held (−0%) | $22.05 | $4K | -26.5% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 20064,337 held (−0%) | $22.05 | $4K | -26.5% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 10076,295 held (−0%) | $22.11 | $2K | -26.7% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 10076,295 held (−0%) | $22.11 | $2K | -26.7% | — |
| Aug 28SEC | Sachs Asset Management, L.p. GoldmanFormer 10% Owner | Sell | 10062,374 held (−0%) | $21.99 | $2K | -26.3% | — |
| Aug 28SEC | Colin WalshDirector | Sell | 10062,374 held (−0%) | $21.99 | $2K | -26.3% | — |
| Aug 13SEC | Colin WalshDirector | Buy | 500,0003,020,632 held (+20%) | $17.00 | $8.5M | -4.6% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Buy | 500,0003,020,632 held (+20%) | $17.00 | $8.5M | -4.6% | — |
| Aug 13SEC | Colin WalshDirector | Buy | 85,000new position | $21.00 | $1.8M | -22.8% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Buy | 85,000new position | $21.00 | $1.8M | -22.8% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 76,418 | $21.04 | $1.6M | -23.0% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 76,418 | $21.04 | $1.6M | -23.0% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 6,97067,900 held (−9%) | $22.03 | $154K | -26.4% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 6,97067,900 held (−9%) | $22.03 | $154K | -26.4% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 6,76355,611 held (−11%) | $21.61 | $146K | -25.0% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 6,76355,611 held (−11%) | $21.61 | $146K | -25.0% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 3,40277,075 held (−4%) | $22.02 | $75K | -26.4% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 3,40277,075 held (−4%) | $22.02 | $75K | -26.4% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 1,55680,477 held (−2%) | $22.06 | $34K | -26.5% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 1,55680,477 held (−2%) | $22.06 | $34K | -26.5% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 1,33282,233 held (−2%) | $22.03 | $29K | -26.4% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 1,33282,233 held (−2%) | $22.03 | $29K | -26.4% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 1,16362,474 held (−2%) | $22.19 | $26K | -26.9% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 1,16362,474 held (−2%) | $22.19 | $26K | -26.9% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 1,18066,320 held (−2%) | $21.84 | $26K | -25.8% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 1,18066,320 held (−2%) | $21.84 | $26K | -25.8% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 1,04065,280 held (−2%) | $22.05 | $23K | -26.5% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 1,04065,280 held (−2%) | $22.05 | $23K | -26.5% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 98884,012 held (−1%) | $22.03 | $22K | -26.4% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 98884,012 held (−1%) | $22.03 | $22K | -26.4% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 75375,542 held (−1%) | $21.97 | $17K | -26.2% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 75375,542 held (−1%) | $21.97 | $17K | -26.2% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 70063,637 held (−1%) | $22.07 | $15K | -26.6% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 70063,637 held (−1%) | $22.07 | $15K | -26.6% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 67274,870 held (−1%) | $22.02 | $15K | -26.4% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 67274,870 held (−1%) | $22.02 | $15K | -26.4% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 48076,395 held (−1%) | $21.55 | $10K | -24.8% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 48076,395 held (−1%) | $21.55 | $10K | -24.8% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 44783,565 held (−1%) | $21.87 | $10K | -25.9% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 44783,565 held (−1%) | $21.87 | $10K | -25.9% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 44364,537 held (−1%) | $21.78 | $10K | -25.6% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 44364,537 held (−1%) | $21.78 | $10K | -25.6% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 40067,500 held (−1%) | $22.02 | $9K | -26.4% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 40067,500 held (−1%) | $22.02 | $9K | -26.4% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 30064,980 held (−0%) | $20.84 | $6K | -22.2% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 30064,980 held (−0%) | $20.84 | $6K | -22.2% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 20076,875 held (−0%) | $22.10 | $4K | -26.7% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 20076,875 held (−0%) | $22.10 | $4K | -26.7% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 20082,033 held (−0%) | $22.05 | $4K | -26.5% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 20064,337 held (−0%) | $22.05 | $4K | -26.5% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 20082,033 held (−0%) | $22.05 | $4K | -26.5% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 20064,337 held (−0%) | $22.05 | $4K | -26.5% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 10076,295 held (−0%) | $22.11 | $2K | -26.7% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 10076,295 held (−0%) | $22.11 | $2K | -26.7% | — |
| Aug 13SEC | Colin WalshDirector | Sell | 10062,374 held (−0%) | $21.99 | $2K | -26.3% | — |
| Aug 13SEC | Goldman Sachs & Co. LlcFormer 10% Owner | Sell | 10062,374 held (−0%) | $21.99 | $2K | -26.3% | — |
| Aug 10SEC | Venbio Global Strategic Fund Iv, L.P.10% Owner | Buy | 382,3524,181,367 held (+10%) | $17.00 | $6.5M | -4.6% | — |
| Aug 7SEC | Jeremy Green10% Owner | Buy | 400,0001,182,854 held (+51%) | $17.00 | $6.8M | -4.6% | — |
| Aug 7SEC | Sanofi10% Owner | Buy | 300,0001,082,855 held (+38%) | $17.00 | $5.1M | -4.6% | — |
| Aug 7SEC | Jeremy Green10% Owner | Buy | 200,000982,854 held (+26%) | $17.00 | $3.4M | -4.6% | — |
| Aug 6SEC | Xi, L.p. Fhmls10% Owner | Buy | 588,2356,154,213 held (+11%) | $17.00 | $10.0M | -4.6% | — |
Insiders at Attovia Therapeutics, Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Colin WalshDirector | $20.6M | $4.5M | Aug 28, 2026 | — |
| Sachs Asset Management, L.p. GoldmanFormer 10% Owner | $10.3M | $2.3M | Aug 28, 2026 | — |
| Goldman Sachs & Co. LlcFormer 10% Owner | $10.3M | $2.3M | Aug 13, 2026 | — |
| Jeremy Green10% Owner | $10.2M | — | Aug 7, 2026 | — |
| Xi, L.p. Fhmls10% Owner | $10.0M | — | Aug 6, 2026 | — |
| Venbio Global Strategic Fund Iv, L.P.10% Owner | $6.5M | — | Aug 10, 2026 | — |
| Sanofi10% Owner | $5.1M | — | Aug 7, 2026 | — |
Insider activity at other Health Care companies
Same sector, ranked by insider buying in the last 90 days.
ATTO stock: common questions
Are Attovia Therapeutics, Inc. insiders buying ATTO stock?
In the past 12 months, 7 insiders reported open-market purchases of ATTO worth $72.9M. The latest was Former 10% Owner Sachs Asset Management, L.p. Goldman bought $8.5M of ATTO at $17.00 — largest purchase by this insider in our records.
Are Attovia Therapeutics, Inc. insiders selling ATTO stock?
3 insiders reported sales worth $9.0M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ATTO's 52-week range?
Over the past year ATTO has traded between $16.21 and $25.55. It last closed at $16.21 on Oct 9, 2026.