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CBIO · Crescent Biopharma, Inc.
> Ask across nine datasets ⌘K
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TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475
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CBIO

CRESCENT BIOPHARMA, INC.
PHARMA & BIOTECH · PHARMACEUTICAL PREPARATIONS · CIK 0001253689
SEC FILINGS☆ WATCH
INSIDER NET · 180D
$11.1M
open-market buys minus sells, Form 4 codes P and S
INSIDER BUYERS · 180D
1
CONGRESS BUYERS · 1Y
0
FUNDS ADDED · QTR
49
13F, latest reported quarter
REVENUE GROWTH
+108340.0%
XBRL, annual
NET MARGIN
-1419.6%
SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST
INSIDERS
net +$11.1M over 180 days
+$11.1M over 90 days · +$12.4M of it by a 10%+ holder
more than 95% of Pharma & Biotech
CONGRESS
no member of Congress has reported trading it
FUNDS
49 funds added or opened last quarter
below 56% of Pharma & Biotech
REVENUE
+108340.0% year over year
the highest in Pharma & Biotech
MARGIN
-1419.6% net margin
below 91% of Pharma & Biotech
BUYBACKS
no share repurchases reported
SHORT
9.3% of shares outstanding short · 8.9 days to cover · settled 2026-07-31
more than 73% of Pharma & Biotech
THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET
49 funds added or opened positions in the latest 13F quarter, of 84 holders.
The year, with the filings on it
Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail
TOTAL 12M RETURN +52.6%
+52.6%12M
-35%+9%+53%+97%2025-092025-102025-122026-032026-052026-072026-09 2025-12-04 · Harwin Peter Evan bought $18.2M2026-07-16 · Fairmount Funds Management LLC bought $12.4M2026-06-22 · Brumm Joshua T sold $761.1K2026-06-22 · McNeill Jonathan sold $369.7K2026-06-22 · Pinkas Jan sold $23.2K2026-06-22 · Im Ellie Eunkyung sold $21.9K2026-06-22 · Bispham Barbara Harlin sold $21.9K2026-06-22 · Scalzo Richard William sold $20.0K2026-06-22 · Lynch Ryan sold $8.4K
INSIDER BUYINSIDER SELL
INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY
Live price
Daily candles from TradingView, on their licence — no filings are marked on this one
WHY THIS NAME IS ON THE DESK
Insiders are net buyers of their own stock.
The record shows a net $11.1M bought by insiders over 180 days, 49 funds added last quarter. Every figure is a federal filing, dated the day it became public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector from the SEC's own SIC classification
UTHRCPIXMRNAREGNLLYALNYELFCITRMDGLDNAVRTXNUVL
Insider transactions
Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, CRESCENT BIOPHARMA, INC. insiders bought a net $11.1M of stock across 18 Form 4 purchases and sales, with 1 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-06.

INSIDER
FILED
SHARES
VALUE
Fairmount Funds Management LLC
Director
BUY
2026-07-16
853,450.0
$12.4M
Lynch Ryan
See Remarks
SELL
2026-06-22
465.0
$8.4K
Pinkas Jan
Chief Scientific Officer
SELL
2026-06-22
1,288.0
$23.2K
Scalzo Richard William
Chief Financial Officer
SELL
2026-06-22
1,112.0
$20.0K
Bispham Barbara Harlin
See Remarks
SELL
2026-06-22
1,218.0
$21.9K
18 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 13 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders
13F · holdings as of the latest quarter funds have reported
FMR LLC
4,133,514.0 sh
$74.4M
BVF INC/IL
2,748,763.0 sh
$49.5M
Fairmount Funds Management LLC
2,747,866.0 sh
$49.5M
Venrock Adviser, LLC
2,133,576.0 sh
$38.4M
Logos Global Management LP
1,900,000.0 sh
$34.2M
SCHEDULE 13D/G
No 5%+ ownership filings
Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.
FORM 144
No planned-sale notices
No insider has notified an intent to sell. This is the panel to watch after a run-up.
Fund concentration
N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show
Health Sciences Trust
$109.5K POSITION · AS OF 2026-03-31
0.0%
Victory Extended Market Index Fund
$50.1K POSITION · AS OF 2026-04-30
0.0%
Avantis U.S. Small Cap Equity ETF
$48.2K POSITION · AS OF 2026-02-28
0.0%
VANGUARD EXTENDED MARKET INDEX FUND
$1.5M POSITION · AS OF 2026-03-31
0.0%
Knights of Columbus U.S. ALL CAP INDEX FUND
$2.6K POSITION · AS OF 2026-04-30
0.0%
VANGUARD TOTAL STOCK MARKET INDEX FUND
$12.8M POSITION · AS OF 2026-03-31
0.0%
SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK
Clinical pipeline
ClinicalTrials.gov · 1 registered trials, 1 still enrolling or running — a status change here is dated weeks before the press release
1
Multi-phase
1 ACTIVE
TRIALS MATCHED TO THIS TICKER BY SPONSOR NAME · STUDIES RUN UNDER A SUBSIDIARY'S OWN NAME ARE NOT INCLUDED
Executive pay vs shareholder return · (1)
DEF 14A pay-versus-performance disclosure · both the headline pay and the SEC's mark-to-market figure, beside the return the company delivered and the return of the peer group it chose itself
FY
CEO TOTAL
ACTUALLY PAID
OTHER NEOs AVG
TSR
PEER TSR
2025
$13.1M
$17.6M
$5.1M
-96%
—
TAGGED BY THE COMPANY UNDER SEC ITEM 402(v) · RETURN IS CUMULATIVE FROM THE START OF THE DISCLOSURE PERIOD · GREEN WHERE THE COMPANY BEAT ITS OWN PEER GROUP
Fundamentals
Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all
2025-122024-122023-122022-12
REVENUE$10.8M—$10.0K$75.0K
OPERATING INCOME$-152.6M$-40.0M$-39.3M$-47.4M
NET INCOME$153.9K$37.9K$36.9K$-46.7M
EPS (DILUTED)—-0.59-0.58-0.89
OPERATING CASH FLOW$-71.5M$-31.1M$-34.9M$-46.5M
CASH$213.2M$34.8M$41.8M$47.9M
SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-06 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE
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Public filings, honestly analyzed. Official US government sources in one desk — every figure carries the date it was filed, and the methodology is published, backtest included.

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© 2026 WAVEMAN · SOURCE: SEC EDGAR & OFFICIAL GOVERNMENT DATA · NOT INVESTMENT ADVICE · CHART BY TRADINGVIEW · UPDATED 2026-09-06 ALL SYSTEMS LIVE FOR MACHINES →