Attovia Therapeutics (ATTO) Latest Stock Analysis Report – Oct 15, 2026, 4:00 PM ET
Updated Oct 15, 2026, 4:00 PM ET
- Closed at $14.78, -1.20% vs the prior close of $14.96.
- Volume 641.40K shares, 1.4x its 50-day average.
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
ATTO dips 1.2% to $14.78. Closed at $14.78, -1.20% vs the prior close of $14.96. Day range $14.61–$15.50, opened at $14.74.
ATTO daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 15, 2026 — ATTO dips 1.2% to $14.78
- Closed at $14.78, -1.20% vs the prior close of $14.96. Day range $14.61–$15.50, opened at $14.74.
- Volume was 641.40K shares, 1.4x its 50-day average of 445.09K.
- Price is -26.0% vs its 50-day average ($19.97).
- 52-week range $14.23–$28.00; today's close sits at 4% of that range, 47.2% below the 52-week high.
Oct 14, 2026 — ATTO rises 1.6% to $14.96
- Closed at $14.96, +1.63% vs the prior close of $14.72. Day range $14.35–$15.31, opened at $14.51.
- Volume was 359.60K shares, 0.8x its 50-day average of 446.84K.
- Price is -25.6% vs its 50-day average ($20.11).
- 52-week range $14.23–$28.00; today's close sits at 5% of that range, 46.6% below the 52-week high.
Oct 13, 2026 — ATTO rises 0.9% to $14.72
- Closed at $14.72, +0.89% vs the prior close of $14.59. Day range $14.23–$15.16, opened at $14.50.
- Volume was 399.50K shares, 0.9x its 50-day average of 447.82K.
- 52-week range $14.23–$28.00; today's close sits at 4% of that range, 47.4% below the 52-week high.
Oct 12, 2026 — ATTO slides 10.0% to $14.59, a 1-month low, 5 down days in a row
- Closed at $14.59, -9.99% vs the prior close of $16.21. Day range $14.44–$16.30, opened at $16.21.
- Volume was 262.30K shares, 0.6x its 50-day average of 451.77K — lighter than usual.
- 52-week range $14.44–$28.00; today's close sits at 1% of that range, 47.9% below the 52-week high.
- That makes 5 straight losses.
Oct 9, 2026 — ATTO dips 0.6% to $16.21, a 1-month low, 4 down days in a row
- Closed at $16.21, -0.61% vs the prior close of $16.31. Day range $15.98–$16.94, opened at $16.44.
- Volume was 194.20K shares, 0.4x its 50-day average of 457.37K — lighter than usual.
- 52-week range $15.48–$28.00; today's close sits at 6% of that range, 42.1% below the 52-week high.
- That makes 4 straight losses.
Oct 8, 2026 — ATTO dips 0.7% to $16.31, a 1-month low, 3 down days in a row
- Closed at $16.31, -0.67% vs the prior close of $16.42. Day range $15.48–$16.39, opened at $16.27.
- Volume was 418.10K shares, 0.9x its 50-day average of 458.24K.
- 52-week range $15.48–$28.00; today's close sits at 7% of that range, 41.8% below the 52-week high.
- That makes 3 straight losses.
Oct 7, 2026 — ATTO slides 6.2% to $16.42, a 1-month low
- Closed at $16.42, -6.17% vs the prior close of $17.50. Day range $16.33–$17.54, opened at $17.40.
- Volume was 515.70K shares, 1.1x its 50-day average of 456.94K.
- 52-week range $16.15–$28.00; today's close sits at 2% of that range, 41.4% below the 52-week high.
Oct 6, 2026 — ATTO dips 2.8% to $17.50
- Closed at $17.50, -2.78% vs the prior close of $18.00. Day range $17.27–$18.38, opened at $18.00.
- Volume was 521.70K shares, 1.1x its 50-day average of 455.43K.
- 52-week range $16.15–$28.00; today's close sits at 11% of that range, 37.5% below the 52-week high.
Oct 5, 2026 — ATTO jumps 4.8% to $18.00
- Closed at $18.00, +4.83% vs the prior close of $17.17. Day range $17.10–$18.25, opened at $17.22.
- Volume was 456.00K shares, 1.0x its 50-day average of 455.42K.
- 52-week range $16.15–$28.00; today's close sits at 16% of that range, 35.7% below the 52-week high.
Oct 2, 2026 — ATTO slides 3.5% to $17.17
- Closed at $17.17, -3.49% vs the prior close of $17.79. Day range $17.00–$18.50, opened at $17.73.
- Volume was 348.70K shares, 0.8x its 50-day average of 458.02K.
- 52-week range $16.15–$28.00; today's close sits at 9% of that range, 38.7% below the 52-week high.
ATTO latest news & SEC filings
Every SEC filing by or about ATTO in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 8, 2026 · Form 4/A — Insider trade (amended)
Amended insider trade report (Form 4/A)
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Oct 8, 2026 · Form 4/A — Insider trade (amended)
Amended insider trade report (Form 4/A)
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Sep 2, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Revenue: $450.00K (prior year $0)
- Net income: -$20.69M (prior year -$14.44M) (loss widened vs Jun 30, 2025)
- Diluted EPS: -$4.88 (prior year -$3.71) (loss widened vs Jun 30, 2025)
Sep 2, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.02 — Reported results of operations (earnings release).
This is a results-day filing: the earnings press release is attached as an exhibit.
Aug 28, 2026 · Form 144 — Planned insider sale
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Aug 28, 2026 · Form 4/A — Insider trade (amended)
Amended insider trade report (Form 4/A)
- Walsh Colin bought 500,000 shares at $17.00 (≈$8.50M) on Aug 6, 2026
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Aug 28, 2026 · Form 4/A — Insider trade (amended)
Amended insider trade report (Form 4/A)
- Goldman Sachs Asset Management, L.P. bought 500,000 shares at $17.00 (≈$8.50M) on Aug 6, 2026
- Wsls Emp Onshore Investments, L.P. bought 500,000 shares at $17.00 (≈$8.50M) on Aug 6, 2026
- West Street Life Sciences I, L.P. bought 500,000 shares at $17.00 (≈$8.50M) on Aug 6, 2026
- Wsls Emp Offshore Investments, L.P. bought 500,000 shares at $17.00 (≈$8.50M) on Aug 6, 2026
- Goldman Sachs Group Inc bought 500,000 shares at $17.00 (≈$8.50M) on Aug 6, 2026
- Broad Street Principal Investments, L.L.C. bought 500,000 shares at $17.00 (≈$8.50M) on Aug 6, 2026
- …plus 2 more transaction lines in the filing.
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Aug 13, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Walsh Colin bought 500,000 shares at $17.00 (≈$8.50M) on Aug 6, 2026
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Aug 12, 2026 · Form SCHEDULE 13G — Passive stake (13G)
Passive stake (13G) — an investor reported owning more than 5%
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Aug 11, 2026 · Form SCHEDULE 13D — Activist-style stake (13D)
Activist-style stake (13D) — an investor reported owning more than 5%
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Aug 6, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 5.03 — Amended its charter or bylaws / changed fiscal year.
Aug 6, 2026 · Form S-8 — Employee share plan registration
Registration of shares for employee stock plans (S-8)
Aug 5, 2026 · Form 424B4 — Final prospectus with offering price
Final prospectus with offering price
An offering document: new shares or debt may be sold, which can increase the share count (dilution) or debt load. Size and terms are in the prospectus.
Things to know before you trade ATTO
- Last results release: Sep 2, 2026 (8-K Item 2.02).
- How much it moves: over the last 20 sessions the average daily move was 3.45% (largest 11.1%). That is a volatile stock.
- Liquidity: about 516.77K shares (≈$7.64M) trade per day on average.
- 52-week position: $14.78 vs a range of $14.23–$28.00 (4% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 25 open-market buys, 0 sales; latest: Sachs Asset Management, L.P. Goldman bought 500,000 shares on Aug 6, 2026.
- Latest filings: 10-Q Sep 2, 2026; 8-K Sep 2, 2026; 8-K Aug 6, 2026.
- Listing: Nasdaq · industry: Biological Products, (No Diagnostic Substances).
ATTO market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 15, 2026 | 14.74 | 15.50 | 14.61 | 14.78 | 641.40K |
| Oct 14, 2026 | 14.51 | 15.31 | 14.35 | 14.96 | 359.60K |
| Oct 13, 2026 | 14.50 | 15.16 | 14.23 | 14.72 | 399.50K |
| Oct 12, 2026 | 16.21 | 16.30 | 14.44 | 14.59 | 262.30K |
| Oct 9, 2026 | 16.44 | 16.94 | 15.98 | 16.21 | 194.20K |
| Oct 8, 2026 | 16.27 | 16.39 | 15.48 | 16.31 | 418.10K |
| Oct 7, 2026 | 17.40 | 17.54 | 16.33 | 16.42 | 515.70K |
| Oct 6, 2026 | 18.00 | 18.38 | 17.27 | 17.50 | 521.70K |
| Oct 5, 2026 | 17.22 | 18.25 | 17.10 | 18.00 | 456.00K |
| Oct 2, 2026 | 17.73 | 18.50 | 17.00 | 17.17 | 348.70K |
| Oct 1, 2026 | 17.26 | 18.28 | 17.15 | 17.79 | 530.80K |
| Sep 30, 2026 | 18.19 | 18.34 | 16.79 | 17.14 | 769.60K |
| Sep 29, 2026 | 17.46 | 18.55 | 17.38 | 18.16 | 887.30K |
| Sep 28, 2026 | 17.56 | 18.05 | 16.62 | 17.65 | 403.00K |
| Sep 25, 2026 | 18.10 | 19.35 | 17.61 | 17.78 | 404.40K |
| Sep 24, 2026 | 18.48 | 18.84 | 17.83 | 18.17 | 394.20K |
| Sep 23, 2026 | 20.71 | 21.35 | 18.25 | 18.52 | 689.00K |
| Sep 22, 2026 | 21.31 | 21.73 | 19.86 | 20.83 | 317.70K |
| Sep 21, 2026 | 22.31 | 22.46 | 20.21 | 21.30 | 460.90K |
| Sep 18, 2026 | 22.51 | 25.00 | 22.01 | 22.14 | 1.36M |
About Attovia Therapeutics
Attovia Therapeutics (ATTO) is listed on the Nasdaq and classified by the SEC under “Biological Products, (No Diagnostic Substances)”. Its business address is in SAN CARLOS, CA. State of incorporation: DE. Fiscal year ends December 31. SEC CIK 2058707.
ATTO board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Mitchell Gold | Director | Aug 6, 2026 |
| Aaron Royston | Director | Aug 4, 2026 |
| John W Smither | Director | Aug 4, 2026 |
| James N Topper | Director | Aug 4, 2026 |
| Colin Walsh | Director | Aug 28, 2026 |
| Angie You | Director | Aug 6, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Therapeutics, Inc. Attovia | Chief Financial Officer | Aug 6, 2026 |
| Hubert Chen | Chief Medical Officer | Aug 6, 2026 |
| Zaneta Odrowaz | Chief Business Officer | Aug 6, 2026 |
| Petter Veiby | Chief Scientific Officer | Aug 6, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 6, 2026 | Sachs Asset Management, L.P. Goldman | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Emp Onshore Investments, L.P. Wsls | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Street Life Sciences I, L.P. West | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Emp Offshore Investments, L.P. Wsls | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Sachs Group Inc Goldman | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Street Principal Investments, L.L.C. Broad | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Offshore Investments, Slp Wsls | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Sachs & Co. Llc Goldman | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Colin Walsh | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Colin Walsh | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Sachs & Co. Llc Goldman | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Emp Offshore Investments, L.P. Wsls | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Sachs Asset Management, L.P. Goldman | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Street Life Sciences I, L.P. West | Buy | 500,000 | $17.00 |
| Aug 6, 2026 | Sachs Group Inc Goldman | Buy | 500,000 | $17.00 |
ATTO financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| No annual XBRL figures available (foreign filers often report on Form 20-F). | ||||
Latest balance sheet: total assets $128.35M, total liabilities $15.58M, cash $32.83M (as of Jun 30, 2026).
ATTO earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Sep 2, 2026 | 8-K Item 2.02 (results) | $23.13 |
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 15, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.