ANAB ANAPTYSBIO, INC

NEUTRAL Impact: 3/10 144
Horizon days Filed May 28, 2026 Processed 12d 10h ago SEC 0001950047-26-005251
Form 144 — notice of proposed sale of securities
Latest settled — T+5d ⚠ clustered
ANAB ▼ -9.52% at T+5d
NEUTRAL call ✗ call lost -9.52% · α vs SPY -7.00% · entry $55.67 → $50.37
Next anchor: T+20d in 16d
Last close $51.36 (close Jun 8) · -7.74% from $55.67 entry
Entry anchored
May 28, 2026
via day open
T+1d
-4.54%
call -4.54% · α -4.80%
$53.14
settled 12d ago
T+5d
-9.52%
call -9.52% · α -7.00%
$50.37
settled 6d ago
T+20d
call — · α —
in 16d
T+60d
call — · α —
in 2mo

Price Chart

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Executive Summary

Dennis Mulroy, an officer of AnaptysBio, filed a Form 144 on May 28, 2026, indicating intent to sell 10,264 shares of common stock valued at approximately $594,671. The proposed sale follows a series of recent open-market sales totaling 75,467 shares for about $4.3 million between May 15 and May 27, 2026, and is tied to a stock option exercise. While the filing signals insider intent to monetize equity, the officer has been a consistent seller over the past two weeks, which may raise mild concern but is not unusual for routine option exercises and diversification.

Actionable Insight

The officer's consistent selling over two weeks is notable but not alarming given the modest size relative to market cap (~0.035% of shares outstanding). Monitor for any acceleration of insider sales or a Form 4 filing confirming execution. No immediate trading catalyst.

Key Facts

  • Officer Dennis Mulroy filed Form 144 on May 28, 2026, to sell 10,264 shares of common stock.
  • The proposed sale has an approximate market value of $594,671 based on a $57.93 per share price.
  • The shares to be sold are from a stock option exercise executed on May 28, 2026.
  • Mulroy has sold 75,467 shares in seven separate transactions between May 15 and May 27, 2026, totaling approximately $4.3 million.
  • The filing is an advance notice of intent to sell; the actual sale may not occur.
  • AnaptysBio has a market cap of $1.7 billion and analyst consensus is 89% bullish (16 Buy, 2 Hold).

Financial Impact

Proposed sale of 10,264 shares valued at ~$594,671; cumulative recent sales of 75,467 shares for ~$4.3 million.

dilution

Risk Factors

  • Insider selling may signal lack of confidence if it accelerates or becomes material relative to holdings.
  • Form 144 is only an intent to sell; the sale may not be executed.

Market Snapshot

Exchange
Nasdaq
Sector
Pharmaceutical Preparations
Analyst Consensus
89% bullish (18 analysts)

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
144 Filing (Primary)0001950047-26-005251
Document: 0001950047-26-005251-index.html0001950047-26-005251
Document: 0001950047-26-005251.txt0001950047-26-005251
15 reports for ANAB
Performance horizon
88% Hit rate 7 of 8 directional calls best @ T+60▲ +41.26%Mar 3, 2026
Filters
Rows
Reports for ANAB — sortable, filterable
Type Now
Jun 8, 2026
1d ago
144
BEARISH ★ 5/10
$51.38 awaiting T+1awaiting T+1$51.36 (+0.03%)
Jun 5, 2026
4d ago
144
BEARISH ★ 5/10
$50.58 awaiting T+1awaiting T+1$51.36 (−1.54%)
Jun 5, 2026
4d ago
144
BEARISH ★ 5/10
$51.33 awaiting T+1awaiting T+1$51.36 (−0.06%)
Jun 3, 2026
6d ago
144
BEARISH ★ 5/10
$51.67 $50.37▲ +2.52%▼ −0.08%$51.36 (+0.60%)
Jun 1, 2026
8d ago
144
BEARISH ★ 5/10
$51.26 $51.24▲ +0.04%▼ −0.68%$51.36 (−0.20%)
May 29, 2026
11d ago
8-K
NEUTRAL ★ 2/10
$53.14 $51.26▼ −3.54%▼ −3.69%$51.36 (−3.35%)
May 28, 2026
12d ago
144
NEUTRAL ★ 3/10
$55.67 $53.14▼ −4.54%▼ −4.80%$51.36 (−7.74%)
May 27, 2026
13d ago
144
BEARISH ★ 6/10
$57.02 $55.67▲ +2.37%▲ +2.61%$51.36 (+9.93%)
May 22, 2026
18d ago
144
BEARISH ★ 5/10
$57.77 $57.69▲ +0.14%▲ +0.15%$51.36 (+11.10%)
May 15, 2026
25d ago
144
NEUTRAL ★ 3/10
$58.74 $59.77▲ +1.75%▲ +2.40%$51.36 (−12.56%)
Showing 10 of 15

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