Transaction · 0001628280-26-062701

Brumm Joshua T

Brumm Joshua T, CEO, reported an open-market or private sale at CRESCENT BIOPHARMA, INC. involving 7837.000000 shares for an estimated $130956.27. Reported holdings after the transaction were 271765.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SCEO
CBIOCRESCENT BIOPHARMA, INC.
Trade date
Sep 18, 2026
Filing date
Sep 18, 2026
View on SEC Insider profile
Disclosed value-$130kShares × reported price
Shares traded7.83k$16.71 per share
Holdings after271kDirect
% of reported position traded2.8%This security and ownership context
How reported position traded is calculated

Shares sold ÷ (holdings after + shares sold). Estimated position before: 279,602 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

CBIO price since this filing

Daily closing prices, with the filing date and available return windows
CBIO · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago1w ago1d ago
Returns since7d -17.2%30d -29.9%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001628280-26-062701
Ordinary Shares
Transaction date
Sep 18, 2026
Filed Sep 18, 2026, 08:02 PM · 0d delay
Shares
7,837 sh
$16.71 per share
Estimated value
-$130k
Computed from shares × price
Holdings after
271,765 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Selling Direct Ownership Repeat Seller 10b5-1 Detected
Filing-only score

0 points

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • timely_filing+4 points

    reporting_delay_days = 0

    Filing reported within two business days of the transaction.
  • tenb5_1_detected-10 points

    is_10b5_1 = true

    Stored filing content includes detected 10b5-1 language.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Executive Officer

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    Represents shares automatically sold by the Reporting Person to satisfy tax withholding obligations in connection with the settlement of restricted stock units granted to the Reporting Person on Decem…

  2. F2

    The prices reported in Column 4 are weighted average prices. These shares were sold in multiple transactions at prices ranging from $17.10 to $19.17 on September 16, 2026 and from $16.15 to $17.23 on…

Original filing · 0001628280-26-062701
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CBIO