Latest filingAug 28, 2026Most recent Form 4
ATTO
Attovia Therapeutics, Inc.
NasdaqHealthcareBiological Products, (No Diagnostic Substances)
Insider activity for last month from 08/03 to 09/03. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$2.50B16 buys
Total selling$450M46 sells
Net open-market+$2.05B9 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period70transactions
- S · Open-market sells · dominant46 · 66%
- P · Open-market buys16 · 23%
- C · Code C8 · 11%
Activity by reported role
A joint filing can contribute to multiple roles70transactions
- 10% owner · dominant35 · 50%
- Director35 · 50%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (9)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeGoldman Sachs & Co. LlcCommon Stock · Indirect · See Footnotes
3,020,632Aug 06, 2026
Goldman Sachs Group IncCommon Stock · Indirect · See Footnotes
3,020,632Aug 06, 2026
Goldman Sachs Asset Management, L.P.Common Stock · Indirect · See Footnotes
3,020,632Aug 06, 2026
Broad Street Principal Investments, L.L.C.Common Stock · Indirect · See Footnotes
2,520,632Aug 06, 2026
West Street Life Sciences I, L.P.Common Stock · Indirect · See Footnotes
3,020,632Aug 06, 2026
Walsh ColinCommon Stock · Indirect · See Footnotes
3,020,632Aug 06, 2026
Wsls Emp Offshore Investments, L.P.Common Stock · Indirect · See Footnotes
2,042,134Aug 06, 2026
Goldman Sachs & Co. LlcEquity Swap · Indirect · See Footnotes
105,807Aug 05, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 03 → Sep 03
LessMore
Top insiders
By absolute net value across the selected period- WC+$10.3M
- GI+$9.0M
Recent filing activity
Most recent 12 transactions · color = transaction codeFiling detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
ATTO transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| ATTO | WALSH COLIN | DIR | buy | 5.74k | $12.1M | P | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | buy | 11.3k | $24.2M | P | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | buy | 45.5k | $96.9M | P | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | buy | 11.4k | $24.3M | P | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | buy | 28.7k | $60.9M | P | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | buy | 2.87k | $6.09M | P | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | unknown | 4.44M | $0 | C | — | 08/28 | 08/06 | |
| ATTO | WALSH COLIN | DIR | unknown | 18.1M | $0 | C | — | 08/28 | 08/06 | |
| ATTO | WALSH COLIN | DIR | buy | 500k | $850M | P | — | 08/28 | 08/06 | |
| ATTO | WALSH COLIN | DIR | unknown | 478k | $0 | C | — | 08/28 | 08/06 | |
| ATTO | WALSH COLIN | DIR | unknown | 1.95M | $0 | C | — | 08/28 | 08/06 | |
| ATTO | WALSH COLIN | DIR | sale | 76.4k | -$160M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 6.76k | -$14.6M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 100 | -$219k | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 1.16k | -$2.58M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 700 | -$1.54M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 200 | -$441k | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 443 | -$964k | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 300 | -$625k | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 1.04k | -$2.29M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 1.18k | -$2.57M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 400 | -$880k | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 6.97k | -$15.3M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 672 | -$1.47M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 753 | -$1.65M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 100 | -$221k | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 480 | -$1.03M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 200 | -$442k | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 3.40k | -$7.49M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 1.55k | -$3.43M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 200 | -$441k | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 1.33k | -$2.93M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 447 | -$977k | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | sale | 988 | -$2.17M | S | — | 08/28 | 08/05 | |
| ATTO | WALSH COLIN | DIR | buy | 85.0k | $178M | P | — | 08/28 | 08/05 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | buy | 5.74k | $12.1M | P | — | 08/28 | 08/05 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | buy | 11.3k | $24.2M | P | — | 08/28 | 08/05 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | buy | 45.5k | $96.9M | P | — | 08/28 | 08/05 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | buy | 11.4k | $24.3M | P | — | 08/28 | 08/05 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | buy | 28.7k | $60.9M | P | — | 08/28 | 08/05 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | buy | 2.87k | $6.09M | P | — | 08/28 | 08/05 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | unknown | 4.44M | $0 | C | — | 08/28 | 08/06 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | unknown | 18.1M | $0 | C | — | 08/28 | 08/06 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | buy | 500k | $850M | P | — | 08/28 | 08/06 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | unknown | 478k | $0 | C | — | 08/28 | 08/06 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | unknown | 1.95M | $0 | C | — | 08/28 | 08/06 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | sale | 76.4k | -$160M | S | — | 08/28 | 08/05 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | sale | 6.76k | -$14.6M | S | — | 08/28 | 08/05 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | sale | 100 | -$219k | S | — | 08/28 | 08/05 | |
| ATTO | GOLDMAN SACHS GROUP INC | 10% | sale | 1.16k | -$2.58M | S | — | 08/28 | 08/05 |
Attovia Therapeutics, Inc. Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at Attovia Therapeutics, Inc.?
WALSH COLIN, Broad Street Principal Investments, L.L.C., GOLDMAN SACHS ASSET MANAGEMENT, L.P., GOLDMAN SACHS & CO. LLC, GOLDMAN SACHS GROUP INC, West Street Life Sciences I, L.P., WSLS EMP OFFSHORE INVESTMENTS, L.P., WSLS EMP ONSHORE INVESTMENTS, L.P., WSLS OFFSHORE INVESTMENTS, SLP.
When was the latest reported open-market purchase?
Walsh Colin reported a buy on Aug 06, 2026 valued at $850M. Read the SEC filing.
When was the latest reported open-market sale?
Walsh Colin reported a sale on Aug 05, 2026 valued at $160M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market buying in the selected period was $20,562,832.28. This describes filed transactions, not a bullish rating.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.