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Insider Cluster (5 insiders) ·Filed Mar 2, 2026

ANNX

Annexon, Inc.
NEUTRAL
Impact 3/10
Horizondays Processed7mo ago
Insider cluster: 2 insiders, $62K total
Actionable Insight • Neutral

Monitor for any pattern of increasing insider selling in future filings; currently, this cluster is consistent with routine portfolio management by executives and not indicative of material concern.

DirectionNeutral
Confidencehigh
Horizondays
Final — all horizons settled through T+60d
ANNX ▲ 0.00% at T+60d
NEUTRAL call 0.00% · α vs SPY -9.33% · entry $5.52 → $5.52
Entry = T+0 close
Mar 1, 2026
via day close
T+1d
-1.63%
call -1.63% · α -0.72%
$5.43
settled 8mo ago
T+5d
+1.27%
call +1.27% · α +2.48%
$5.59
settled 8mo ago
T+20d
-10.14%
call -10.14% · α -2.21%
$4.96
settled 7mo ago
T+60d
0.00%
call 0.00% · α -9.33%
$5.52
settled 5mo ago

Price Chart

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Executive Summary

Five executive officers at Annexon, Inc. (ANNX) sold shares in a coordinated open-market transaction on March 2, 2026, realizing a combined total of approximately $147,454 in proceeds. All sales were conducted at or near $5.42 per share, representing routine divestitures by C-suite executives. The total value represents less than 0.03% of the company's $650M market cap, indicating minimal economic impact.

Key Financial Metrics

Direction
selling
Total Value
$147.5K
Insiders
5

Key Facts

  • Five C-suite executives sold shares on the same day (March 2, 2026).
  • Total proceeds from sales: $147,454.32 across 27,184 shares.
  • Sales were open-market transactions (Form 4 code 'S').
  • Average sale price: ~$5.42 per share.
  • Total value represents less than 0.03% of ANNX's $650M market capitalization.

Financial Impact

$147,454 in insider selling, representing minimal dilution or financial impact.

insider ownershipshare count

Risk Factors

  • Potential perception of lack of confidence if selling continues ahead of key catalysts.
  • Concentration of timing across multiple executives could raise questions, though not unusual around option vesting or pre-earnings quiet periods.

Market Snapshot

Exchange
Nasdaq

Investment Themes

Documents Analyzed

This report is based on 1 SEC document filed with EDGAR.

DocumentAccession Number
CONTEXT: Insider Cluster Data (5 trades, 7d window)cluster-ANNX-1772659908673
13 reports for ANNX
Performance horizon
50% Hit rate @ T+5 4 of 8 directional calls Went positive at some point 5 of 8 best @ T+20▲ +26.38%Jun 11, 2026
Filters
Rows
Reports for ANNX — sortable, filterable
TypeNow
Aug 13, 2026
10w ago
ANALYST-UPGRADE
BULLISH ★ 4/10
$5.26 $5.18▼ −1.52%▲ +0.44%$3.75 (−28.71%)
Aug 12, 2026
10w ago
8-K
BULLISH ★ 6/10
$5.33 $5.50▲ +3.19%▲ +3.63%$3.75 (−29.64%)
Aug 12, 2026
10w ago
Press Release
BULLISH ★ 6/10
$5.33 $5.50▲ +3.19%▲ +3.63%$3.75 (−29.64%)
Aug 10, 2026
11w ago
8-K
NEUTRAL ★ 4/10
$5.34 $5.28▼ −1.12%▼ −0.72%$3.75 (−29.78%)
Aug 7, 2026
11w ago
Institutional Cluster
MIXED ★ 4/10
$5.41 $5.29▼ −2.22%▼ −2.62%$3.75 (−30.68%)
Aug 6, 2026
11w ago
Press Release
BULLISH ★ 7/10
$5.60 $5.26▼ −6.07%▼ −7.28%$3.75 (−33.04%)
Jul 21, 2026
13w ago
ANALYST-UPGRADE
BULLISH ★ 4/10
$5.39 $5.13▼ −4.82%▼ −3.60%$3.75 (−30.43%)
Jul 14, 2026
14w ago
144
NEUTRAL ★ 2/10
$5.55 $5.57▲ +0.36%▲ +1.66%$3.75 (−32.43%)
Jun 11, 2026
19w ago
Institutional Cluster
BULLISH ★ 5/10
$4.70 $4.94▲ +5.11%▲ +4.67%$3.75 (−20.21%)
May 12, 2026
23w ago
ANALYST-UPGRADE
BEARISH ★ 4/10
$5.44 $4.96▲ +8.82%▲ +8.90%$3.75 (+31.07%)
Showing 10 of 13

US Market Status

Market Closed — Opens Wed (13h 7m)

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Report published Mar 4, 2026