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Insider Cluster (7 insiders) ·Filed Jun 23, 2026

CBIO

CRESCENT BIOPHARMA, INC.
NEUTRAL
Impact 4/10
Horizondays Processed4mo ago
Insider cluster: 7 insiders, $1.2M total
Actionable Insight • Neutral

Monitor for any upcoming corporate events (earnings, trial data, or regulatory decisions) that may have prompted the coordinated selling. The uniform pricing and C-suite participation suggest a pre-arranged plan, but the concentration of sales by the CEO and COO warrants attention. If no negative catalyst emerges, the selling is likely routine diversification.

DirectionNeutral
Confidencemedium
Horizondays
Final — all horizons settled through T+60d ⚠ clustered
CBIO ▼ -3.40% at T+60d
NEUTRAL call -3.40% · α vs SPY -6.24% · entry $17.36 → $16.77
Entry = T+0 close
Jun 23, 2026
via day close
T+1d
-2.13%
call -2.13% · α -2.28%
$16.99
settled 4mo ago
T+5d
-1.61%
call -1.61% · α -3.32%
$17.08
settled 4mo ago
T+20d
-8.81%
call -8.81% · α -10.75%
$15.83
settled 3mo ago
T+60d
-3.40%
call -3.40% · α -6.24%
$16.77
settled 6w ago

Price Chart

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Executive Summary

Seven insiders at Crescent BioPharma, including CEO Joshua Brumm and President/COO Jonathan McNeill, sold shares on June 22, 2026, totaling $1.23 million. The sales represent 0.26% of market cap and occurred at a uniform price of $17.99, suggesting a pre-arranged plan. While the cluster is notable for involving top executives, the modest dollar amount relative to market cap and the weak predictive power of insider sales limit the bearish signal.

Key Financial Metrics

Direction
selling
Total Value
$1.2M
Insiders
7

Key Facts

  • CEO Joshua Brumm sold 42,300 shares for $761,000.
  • President/COO Jonathan McNeill sold 20,500 shares for $370,000.
  • Total insider sales of $1.23 million represent 0.26% of CBIO's $471 million market cap.
  • All seven insiders sold at the same price ($17.99) on the same day, consistent with a 10b5-1 plan.
  • Recent 30-day insider activity shows 7 sells totaling $1.2 million, indicating this cluster is part of a broader pattern.

Financial Impact

Insider sales of $1.23 million, modest relative to market cap.

insider ownershipdilution

Risk Factors

  • Potential negative catalyst if insider sales precede adverse news.
  • Over-interpretation of routine 10b5-1 plan sales.

Market Snapshot

Exchange
Nasdaq
Sector
Pharmaceutical Preparations
Analyst Consensus
93% bullish (15 analysts)

Investment Themes

Documents Analyzed

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

DocumentAccession Number
CLUSTER Data (Synthetic)cluster-CBIO-1783025061814
16 reports for CBIO
Performance horizon
75% Hit rate @ T+60 3 of 4 directional calls Went positive at some point 4 of 4 best @ T+60▲ +9.89%Jul 14, 2026
Filters
Rows
Reports for CBIO — sortable, filterable
TypeNow
Oct 15, 2026
12d ago
8-K
NEUTRAL ★ 3/10
$11.84awaiting T+60—$13.27 (+12.08%)
Oct 15, 2026
12d ago
Press Release
NEUTRAL ★ 4/10
$11.84awaiting T+60—$13.27 (+12.08%)
Oct 5, 2026
22d ago
Press Release
NEUTRAL ★ 4/10
$13.94awaiting T+60—$13.27 (−4.81%)
Sep 18, 2026
5w ago
Insider Cluster
NEUTRAL ★ 3/10
$16.25awaiting T+60—$13.27 (−18.34%)
Jul 30, 2026
12w ago
8-K
NEUTRAL ★ 3/10
$15.02 $12.82▼ −14.65%▼ −17.11%$13.27 (−11.65%)
Jul 20, 2026
14w ago
Insider Buy
BULLISH ★ 7/10
$16.64 $12.91▼ −22.42%▼ −26.39%$13.27 (−20.25%)
Jul 15, 2026
14w ago
8-K / 424B5
BEARISH ★ 6/10
$15.11 $14.91▲ +1.32%▲ +5.03%$13.27 (+12.18%)
Jul 14, 2026
15w ago
Press Release
BEARISH ★ 7/10
$15.67 $14.12▲ +9.89%▲ +12.42%$13.27 (+15.32%)
Jul 14, 2026
15w ago
424B5
BEARISH ★ 6/10
$15.67 $14.12▲ +9.89%▲ +12.42%$13.27 (+15.32%)
Jul 13, 2026
15w ago
EFFECT
NEUTRAL ★ 3/10
$15.69 $13.57▼ −13.51%▼ −17.51%$13.27 (−15.42%)
Showing 10 of 16

US Market Status

Market Closed — Opens in 9h 27m

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Report published Jun 23, 2026