ANAB ANAPTYSBIO, INC

BEARISH Impact: 5/10 144
Horizon days Filed Jun 8, 2026 Processed 8d 10h ago SEC 0001950047-26-005794
Form 144 — notice of proposed sale of securities
Latest settled — T+5d
ANAB ▲ +15.26% at T+5d
SHORT call ✗ call lost -15.26% · α vs SPY -12.85% · entry $51.63 → $59.51
Next anchor: T+20d in 20d
Currently $57.61 · -11.58% from $51.63 entry (call sign-flipped)
Entry anchored
Jun 8, 03:59 PM ET
via Databento tick
T+1d
+0.91%
call -0.91% · α -2.49%
$52.10
settled 8d ago
T+5d
+15.26%
call -15.26% · α -12.85%
$59.51
settled yesterday
T+20d
call — · α —
in 20d
T+60d
call — · α —
in 3mo

Price Chart

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Executive Summary

Dennis Mulroy, an officer of AnaptysBio, filed a Form 144 notice of intent to sell 21,987 shares of common stock, with an approximate market value of $1.12 million. The shares to be sold were acquired through restricted stock vesting and a stock option exercise. This filing follows a series of recent insider sales by Mulroy totaling over 183,000 shares since mid-May 2026, indicating a sustained pattern of monetization.

Actionable Insight

The sustained insider selling by an officer over the past three weeks is a bearish signal, especially given the absence of any insider buying. Traders should monitor for any negative catalysts or upcoming news that might explain the selling pattern. The stock's recent volatility (historical T+20 alpha of -0.86%) suggests limited near-term upside.

Key Facts

  • Officer Dennis Mulroy filed Form 144 to sell 21,987 shares valued at ~$1.12 million.
  • Shares originate from restricted stock grants (01/03/2025, 01/06/2025) and a stock option exercise (06/08/2026).
  • Mulroy has sold over 183,000 shares in a series of trades from May 15 to June 5, 2026, totaling ~$9.6 million.
  • The filing is an advance notice of intent to sell; the actual sale may or may not occur.
  • No prior insider buying activity was reported in the last 30 days.

Financial Impact

Proposed sale of 21,987 shares at ~$1.12 million; cumulative recent insider sales by Mulroy exceed $9.6 million.

insider selling volumedilution perception

Risk Factors

  • Insider selling may indicate lack of confidence in near-term prospects.
  • Continued selling could pressure the stock price if the market interprets it as a negative signal.
  • The filing is only an intent to sell; the actual sale may not materialize, reducing the signal's reliability.

Market Snapshot

Exchange
Nasdaq
Sector
Pharmaceutical Preparations
Analyst Consensus
94% bullish (17 analysts)

Documents Analyzed

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

DocumentAccession Number
144 Filing (Primary)0001950047-26-005794
Document: 0001950047-26-005794-index.html0001950047-26-005794
Document: 0001950047-26-005794.txt0001950047-26-005794
18 reports for ANAB
Performance horizon
58% Hit rate 7 of 12 directional calls best @ T+60▲ +41.26%Mar 3, 2026
Filters
Rows
Reports for ANAB — sortable, filterable
Type Now
Jun 15, 2026
1d ago
144
BEARISH ★ 6/10
$59.48 awaiting T+1awaiting T+1$57.61 (+3.14%)
Jun 11, 2026
5d ago
144
BEARISH ★ 6/10
$56.07 $59.51▼ −6.14%▼ −4.37%$57.61 (−2.75%)
Jun 10, 2026
6d ago
144
BEARISH ★ 5/10
$54.24 $56.07▼ −3.37%▼ −2.83%$57.61 (−6.21%)
Jun 8, 2026
8d ago
144
BEARISH ★ 5/10
$51.63 $52.10▼ −0.91%▼ −2.49%$57.61 (−11.58%)
Jun 5, 2026
11d ago
144
BEARISH ★ 5/10
$51.36 $51.63▼ −0.53%▼ −0.82%$57.61 (−12.17%)
Jun 5, 2026
11d ago
144
BEARISH ★ 5/10
$50.37 $51.36▼ −1.97%▼ −1.74%$57.61 (−14.37%)
Jun 3, 2026
13d ago
144
BEARISH ★ 5/10
$51.67 $50.37▲ +2.52%▼ −0.08%$57.61 (−11.50%)
Jun 1, 2026
15d ago
144
BEARISH ★ 5/10
$51.26 $51.24▲ +0.04%▼ −0.68%$57.61 (−12.39%)
May 29, 2026
18d ago
8-K
NEUTRAL ★ 2/10
$53.14 $51.26▼ −3.54%▼ −3.69%$57.61 (+8.41%)
May 28, 2026
19d ago
144
NEUTRAL ★ 3/10
$55.67 $53.14▼ −4.54%▼ −4.80%$57.61 (+3.48%)
Showing 10 of 18

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