SecBot SecBot
144Insider Cluster ·Filed Aug 28, 2026

ATTO

Attovia Therapeutics, Inc.
NEUTRAL
Impact 3/10
Horizondays Processed1mo ago SEC0000891836-26-000065
Actionable Insight • Neutral

This Form 144 from Goldman Sachs reflects routine market-making activity, not a conviction-based insider sale. The filing is unlikely to move the stock. Monitor for any actual sales on Form 4 and watch for any change in the pattern of insider selling from directors or officers.

DirectionNeutral
Confidencehigh
Horizondays
Latest settled — T+20d
ATTO ▼ -15.14% at T+20d
NEUTRAL call -15.14% · α vs SPY -14.95% · entry $21.40 → $18.16
Next anchor: T+60d in 27d
Entry = T+0 close
Aug 28, 2026
via day close
T+1d
+3.83%
call +3.83% · α +4.52%
$22.22
settled 8w ago
T+5d
+10.56%
call +10.56% · α +10.70%
$23.66
settled 8w ago
T+20d
-15.14%
call -15.14% · α -14.95%
$18.16
settled 29d ago
T+60d
Pending
in 27d

Price Chart

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Executive Summary

Goldman Sachs Group Inc., a former 10% owner of Attovia Therapeutics, filed a Form 144 notice of intent to sell 105,807 shares of common stock, valued at approximately $2.22 million. The shares were acquired through securities borrowing by Goldman Sachs & Co. LLC acting as a market maker in the ordinary course of business. This filing is part of a broader insider selling cluster, including a director's sale, totaling $169K in the prior week, but the Goldman Sachs sale is a routine market-making activity, not a directional insider signal.

Key Facts

  • Goldman Sachs Group Inc., a former 10% owner, filed Form 144 to sell 105,807 shares of ATTO common stock.
  • The proposed sale value is approximately $2,221,947 based on a recent market price.
  • Shares were acquired through securities borrowing by Goldman Sachs & Co. LLC acting as a market maker in the ordinary course of business.
  • The filing date is August 28, 2026, with the sale date noted as August 5, 2026.
  • A separate insider cluster from July 29 to August 5, 2026, showed $169K in total insider selling, including a director's sale of $154K.

Financial Impact

Proposed sale of 105,807 shares valued at ~$2.22M, representing approximately 0.25% of shares outstanding based on market cap of $978M.

dilution

Risk Factors

  • The proposed sale may still be executed, adding modest selling pressure.
  • The broader insider selling cluster, though small, could indicate reduced insider conviction.

Market Snapshot

Exchange
Nasdaq

Investment Themes

Documents Analyzed

This report is based on 7 SEC documents filed with EDGAR.

DocumentAccession Number
144 Filing (ATTO) — Batch item 10000891836-26-000065
Document: 0000891836-26-000065-index.htmlcluster-ATTO-1787954486593
Document: 0000891836-26-000065.txt0000891836-26-000065
144 Filing (ATTO) — Batch item 40000891836-26-000065
Document: 0000891836-26-000065-index.html0000891836-26-000065
Document: 0000891836-26-000065.txt0000891836-26-000065
CLUSTER Data (Synthetic)0000891836-26-000065
19 reports for ATTO
Performance horizon
86% Hit rate @ T+20 6 of 7 directional calls Went positive at some point 7 of 7 best @ T+20▲ +26.67%Aug 7, 2026
Filters
Rows
Reports for ATTO — sortable, filterable
TypeNow
Oct 8, 2026
18d ago
3/A
NEUTRAL ★ 1/10
$16.21awaiting T+20—$14.43 (−10.98%)
Oct 8, 2026
18d ago
3/A
NEUTRAL ★ 2/10
$16.21awaiting T+20—$14.43 (−10.98%)
Sep 28, 2026
28d ago
Press Release
NEUTRAL ★ 3/10
$18.16awaiting T+20—$14.43 (−20.54%)
Sep 2, 2026
7w ago
Press Release
BULLISH ★ 7/10
$24.20 $17.14▼ −29.17%▼ −28.06%$14.43 (−40.37%)
Aug 28, 2026
8w ago
144 / CLUSTER
NEUTRAL ★ 3/10
$21.40 $18.16▼ −15.14%▼ −14.95%$14.43 (−32.57%)
Aug 13, 2026
10w ago
Insider Buy
BULLISH ★ 6/10
$19.86 $24.52▲ +23.46%▲ +25.46%$14.43 (−27.34%)
Aug 13, 2026
10w ago
Insider Cluster
BULLISH ★ 8/10
$19.86 $24.52▲ +23.46%▲ +25.46%$14.43 (−27.34%)
Aug 10, 2026
11w ago
Insider Cluster
BULLISH ★ 8/10
$18.65 $22.86▲ +22.57%▲ +23.63%$14.43 (−22.63%)
Aug 7, 2026
11w ago
Insider Cluster
NEUTRAL ★ 5/10
$19.84 $23.66▲ +19.25%▲ +20.17%$14.43 (−27.27%)
Aug 7, 2026
11w ago
Insider Cluster
BULLISH ★ 7/10
$20.17 $25.55▲ +26.67%▲ +27.07%$14.43 (−28.46%)
Showing 10 of 19

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Report published Aug 28, 2026