Vault-13

CRESCENT BIOPHARMA INC. CBIO

COM · Common Stock · CUSIP G2545C104

80 institutional holders +20 vs Q1 2026
29,113,81829.1m shares reported held*
78.4% of all shares outstanding*
$524.1mreported value*
31 new 17 added 14 reduced 12 sold out net bought ≈ $70.9m (+3.9m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 37.1m as of 2026-07-27, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $18.00.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100Q2 25: 31Q3 25: 41Q4 25: 56Q1 26: 60Q2 26: 8080Q2 25Q3 25Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q2 202531
Q3 202541
Q4 202556
Q1 202660
Q2 202680

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
50050Q3 25: 22 bought or addedQ3 25: 13 cut or sold outQ3 25Q4 25: 37 bought or addedQ4 25: 15 cut or sold outQ4 25Q1 26: 31 bought or addedQ1 26: 19 cut or sold outQ1 26Q2 26: 48 bought or addedQ2 26: 26 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 20252213
Q4 20253715
Q1 20263119
Q2 20264826

Biggest buyers

Logos Global Management LP Added +1,417,500+1.4m
BlackRock, Inc. Added +1,156,037+1.2m
Remedium Capital Partners, LLC New +361,250+361.2k
AMERIPRISE FINANCIAL INC New +302,568+302.6k
GEODE CAPITAL MANAGEMENT, LLC Added +280,355+280.4k
STATE STREET CORP Added +276,520+276.5k
JENNISON ASSOCIATES LLC Added +225,533+225.5k
VANGUARD PORTFOLIO MANAGEMENT LLC New +188,803+188.8k
STEMPOINT CAPITAL LP New +182,382+182.4k
Balyasny Asset Management L.P. Added +152,884+152.9k

Biggest sellers

Deep Track Capital, LP Sold out -453,686-453.7k
Alyeska Investment Group, L.P. Sold out -264,000-264.0k
GOLDMAN SACHS GROUP INC Sold out -228,475-228.5k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Sold out -213,635-213.6k
Hudson Bay Capital Management LP Sold out -88,867-88.9k
SILVERARC CAPITAL MANAGEMENT, LLC Reduced -71,396-71.4k
Stonepine Capital Management, LLC Reduced -45,000-45.0k
VANGUARD CAPITAL MANAGEMENT LLC Reduced -33,640-33.6k
ADAR1 Capital Management, LLC Reduced -31,998-32.0k
JPMORGAN CHASE & CO Reduced -31,984-32.0k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Fairmount Funds Management LLC 13D · may seek influence -2.0 pts · filed 2026-07-20
Stated purposeItem 4 of the Statement is hereby amended and supplemented as follows: Fund II purchased the Ordinary Shares and Pre-funded Warrants referenced in Item 3 for investment purposes. Lock-Up Agreement In connection with the Company's underwritten public offering of Ordinary Shares and Pre-Funded Warrants that closed on July 16, 2026, the Reporting Persons entered into a customary lock-up letter agreement (the "Lock-Up Agreement") with Jefferies LLC and TD Securities (USA) LLC acting as the Representatives (collectively, the "Representatives") of the underwiters party to to an underwriting agreement with the Company. Pursuant to the Lock-Up Agreement, the Reporting Persons agreed to refrain from selling shares of the Company's securities without the consent of the Representatives, and other… Full filing
16.5% -2.0 pts 6.6m≈ $118.8m 2026-07-20
FMR LLC 13G · institution filed 2026-02-05 15.0% 4.1m≈ $74.4m 2026-02-05
BIOTECHNOLOGY VALUE FUND L P 13G · passive investor filed 2025-08-14 10.0% 1.4m≈ $25.0m 2025-08-14
Venrock Healthcare Capital Partners III, L.P. 13G · passive investor filed 2026-02-17 9.5% 2.7m≈ $48.0m 2026-02-17
ForGrowth III PA B.V. 13G · passive investor new · filed 2025-12-11 6.1% new 1.7m≈ $30.2m 2025-12-11
BlackRock, Inc. 13G · institution new · filed 2026-10-27 5.6% new 2.1m≈ $37.4m 2026-10-27
Vestal Point Capital, LP 13G · institution new · filed 2026-02-17 5.4% new 1.5m≈ $27.0m 2026-02-17

Fell to 5% or below in the last year: TANG CAPITAL MANAGEMENT LLC (4.2%, 2026-05-15)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
10010Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 1 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 7 sellingQ3 26: 1 buyingQ3 26: 7 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20251$18.2m0——
Q1 20260—0——
Q2 20260—7$1.2m$1.2m
Q3 20261$12.4m7$285.5k$285.5k
DateInsiderTradeSharesPrice ValueTheir holding
2026-09-18 Brumm Joshua T Chief Executive Officer, director Sold plan 7,837 $16.71 $131.0k7.8k shares -3%
2026-09-18 McNeill Jonathan President and COO Sold plan 3,839 $16.71 $64.1k3.8k shares -3%
2026-09-16 Brumm Joshua T Chief Executive Officer, director Sold plan 1,610 $17.90 $28.8k1.6k shares -1%
2026-09-16 McNeill Jonathan President and COO Sold plan 731 $17.90 $13.1k731 shares -0%
2026-09-16 Pinkas Jan Chief Scientific Officer Sold plan 658 $17.90 $11.8k658 shares -3%
2026-09-16 Im Ellie Eunkyung Chief Medical Officer Sold plan 623 $17.90 $11.2k623 shares -3%
2026-09-16 Bispham Barbara Harlin Officer Sold plan 620 $17.90 $11.1k620 shares -3%
2026-09-16 Scalzo Richard William Chief Financial Officer Sold plan 568 $17.90 $10.2k568 shares -3%
2026-09-16 Lynch Ryan Officer Sold plan 240 $17.90 $4.3k240 shares -2%
2026-07-16 Harwin Peter Evan +3 Director · By Fairmount Healthcare Fund II L.P. Bought 853,450 $14.50 $12.4m853.5k shares +31%
2026-06-22 Brumm Joshua T Chief Executive Officer, director Sold plan 42,305 $17.99 $761.1k42.3k shares -13%
2026-06-22 McNeill Jonathan President and COO Sold plan 20,549 $17.99 $369.7k20.5k shares -13%
2026-06-22 Pinkas Jan Chief Scientific Officer Sold plan 1,288 $17.99 $23.2k1.3k shares -6%
2026-06-22 Im Ellie Eunkyung Chief Medical Officer Sold plan 1,219 $17.99 $21.9k1.2k shares -5%
2026-06-22 Bispham Barbara Harlin Officer Sold plan 1,218 $17.99 $21.9k1.2k shares -6%
2026-06-22 Scalzo Richard William Chief Financial Officer Sold plan 1,112 $17.99 $20.0k1.1k shares -5%
2026-06-22 Lynch Ryan Officer Sold plan 465 $17.99 $8.4k465 shares -3%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 FMR LLC 0.00% of their portfolio BOSTON, MA 4,133,5144.1m $74.4m $74.4m 0.00% Unchanged
2 BVF INC/IL 1.27% of their portfolio San Francisco, CA 2,748,7632.7m $49.5m $49.5m 1.27% Unchanged
3 Fairmount Funds Management LLC 3.27% of their portfolio WEST CONSHOHOCKEN, PA 2,747,8662.7m $49.5m $49.5m 3.27% Unchanged
4 Venrock Adviser, LLC 1.16% of their portfolio NEW YORK, NY 2,133,5762.1m $38.4m $38.4m 1.16% Unchanged
5 Logos Global Management LP 1.47% of their portfolio San Francisco, CA 1,900,0001.9m $34.2m $34.2m 1.47% Added +1.4m +1,417,500
6 FCPM III SERVICES B.V. 4.02% of their portfolio NAARDEN, P7 1,677,8521.7m $30.2m $30.2m 4.02% Unchanged
7 Balyasny Asset Management L.P. 0.05% of their portfolio Chicago, IL 1,662,9171.7m $29.9m $29.9m 0.05% Added +152.9k +152,884
8 Vestal Point Capital, LP 0.69% of their portfolio NEW YORK, NY 1,630,0001.6m $29.3m $29.3m 0.69% Added +130.0k +130,000
9 Opaleye Management Inc. 2.15% of their portfolio BOSTON, MA 1,319,3511.3m $23.7m $23.7m 2.15% Added +6.7k +6,736
10 BlackRock, Inc. 0.00% of their portfolio New York, NY 1,271,7621.3m $22.9m $22.9m 0.00% Added +1.2m +1,156,037
11 TANG CAPITAL MANAGEMENT LLC 0.95% of their portfolio SAN DIEGO, CA 1,160,0001.2m $20.9m $20.9m 0.95% Unchanged
12 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 767,755767.8k $13.8m $13.8m 0.00% Reduced -33.6k -33,640
13 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 403,859403.9k $7.3m $7.3m 0.00% Added +80.3k +80,306
14 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 384,576384.6k $6.9m $6.9m 0.00% Added +280.4k +280,355
15 JENNISON ASSOCIATES LLC 0.00% of their portfolio NEW YORK, NY 378,507378.5k $6.8m $6.8m 0.00% Added +225.5k +225,533
16 RTW INVESTMENTS, LP 0.06% of their portfolio NEW YORK, NY 372,856372.9k $6.7m $6.7m 0.06% Unchanged
17 NEXTBio Capital Management LP 3.09% of their portfolio AUSTIN, TX 372,856372.9k $6.7m $6.7m 3.09% Unchanged
18 Remedium Capital Partners, LLC 1.44% of their portfolio WEST PALM BEACH, FL 361,250361.2k $6.5m $6.5m 1.44% New
19 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 315,587315.6k $5.7m $5.7m 0.00% Added +276.5k +276,520
20 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 302,568302.6k $5.4m $5.4m 0.00% New
21 Point72 Asset Management, L.P. 0.01% of their portfolio STAMFORD, CT 300,000300.0k $5.4m $5.4m 0.01% Unchanged
22 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 275,581275.6k $5.0m $5.0m 0.00% Reduced -28.0k -27,970
23 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 214,300214.3k $3.9m $3.9m 0.00% Added +13.5k +13,520
24 PERCEPTIVE ADVISORS LLC 0.06% of their portfolio NEW YORK, NY 206,942206.9k $3.7m $3.7m 0.06% Unchanged
25 VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 188,803188.8k $3.4m $3.4m 0.00% New
26 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 186,874186.9k $3.4m $3.4m 0.00% Added +71.0k +71,046
27 STEMPOINT CAPITAL LP 0.57% of their portfolio NEW YORK, NY 182,382182.4k $3.3m $3.3m 0.57% New
28 UBS Group AG 0.00% of their portfolio ZURICH, V8 175,182175.2k $3.2m $3.2m 0.00% Added +92.5k +92,476
29 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 138,778138.8k $2.5m $2.5m 0.00% Added +121.5k +121,549
30 Exome Asset Management LLC 1.42% of their portfolio NEW YORK, NY 127,769127.8k $2.3m $2.3m 1.42% Reduced -25.4k -25,422
31 SECTORAL ASSET MANAGEMENT INC 1.52% of their portfolio MONTREAL, A8 121,300121.3k $2.2m $2.2m 1.52% New
32 Woodline Partners LP 0.01% of their portfolio San Francisco, CA 94,48894.5k $1.7m $1.7m 0.01% Added +20.5k +20,488
33 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 75,22575.2k $1.4m $1.4m 0.00% Added +25.8k +25,802
34 Burkehill Global Management, LP 0.05% of their portfolio NEW YORK, NY 74,00074.0k $1.3m $1.3m 0.05% Unchanged
35 Blackstone Inc. 0.00% of their portfolio NEW YORK, NY 62,64762.6k $1.1m $1.1m 0.00% Not comparable
36 SILVERARC CAPITAL MANAGEMENT, LLC 0.12% of their portfolio BOSTON, MA 59,10459.1k $1.1m $1.1m 0.12% Reduced -71.4k -71,396
37 Y-Intercept (Hong Kong) Ltd 0.02% of their portfolio HONG KONG, K3 50,82450.8k $914.8k $914.8k 0.02% New
38 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 50,25850.3k $904.6k $904.6k 0.00% New
39 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 47,62947.6k $857.3k $857.3k 0.00% New
40 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 45,77845.8k $824.0k $824.0k 0.00% New
41 Stonepine Capital Management, LLC 0.55% of their portfolio Bend, OR 40,00040.0k $720.0k $720.0k 0.55% Reduced -45.0k -45,000
42 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 25,82125.8k $464.8k $464.8k 0.00% Reduced -3.5k -3,456
43 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 25,48725.5k $458.8k $458.8k 0.00% New
44 MOORE CAPITAL MANAGEMENT, LP 0.01% of their portfolio NEW YORK, NY 25,00025.0k $450.0k $450.0k 0.01% Unchanged
45 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 24,16624.2k $435.0k $435.0k 0.00% New
46 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 22,80522.8k $410.5k $410.5k 0.00% New
47 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 19,70019.7k $354.6k $354.6k 0.00% New
48 ADAR1 Capital Management, LLC 0.02% of their portfolio AUSTIN, TX 18,27518.3k $328.9k $328.9k 0.02% Reduced -32.0k -31,998
49 Virtus Investment Advisers, LLC 0.08% of their portfolio HARTFORD, CT 18,25818.3k $328.6k $328.6k 0.08% New
50 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 17,75517.8k $319.6k $319.6k 0.00% Reduced -7.1k -7,148
51 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 17,69817.7k $318.6k $318.6k 0.00% Reduced -879 -879
52 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 14,60014.6k $262.8k $262.8k 0.00% New
53 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 13,76813.8k $247.8k $247.8k 0.00% New
54 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 12,78012.8k $230.0k $230.0k 0.00% New
55 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 11,73111.7k $211.2k $211.2k 0.00% New
56 Persistent Asset Partners Ltd 0.06% of their portfolio HONG KONG, K3 10,96811.0k $197.4k $197.4k 0.06% New
57 XTX Topco Ltd 0.00% of their portfolio LONDON, X0 10,56410.6k $190.2k $190.2k 0.00% New
58 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 10,14110.1k $182.5k $182.5k 0.00% Reduced -10.0k -10,028
59 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 9,9019.9k $178.2k $178.2k 0.00% New
60 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 9,0209.0k $162.4k $162.4k 0.00% Reduced -32.0k -31,984
61 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 7,6007.6k $136.8k $136.8k 0.00% New
62 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 6,3696.4k $114.6k $114.6k 0.00% New
63 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 4,4624.5k $80.3k $80.3k 0.00% Reduced -25.7k -25,727
64 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 3,3033.3k $59.5k $59.5k 0.00% Reduced -12.4k -12,391
65 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 2,7142.7k $48.9k $48.9k 0.00% Reduced -755 -755
66 Legal & General Group Plc 0.00% of their portfolio London, X0 2,0972.1k $37.7k $37.7k 0.00% New
67 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 1,7611.8k $31.7k $31.7k 0.00% New
68 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 1,7261.7k $31.1k $31.1k 0.00% New
69 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 681681 $12.0k $12.0k 0.00% Added +630 +630
70 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 403403 $7.3k $7.3k 0.00% New
71 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 297297 $5.3k $5.3k 0.00% New
72 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 264264 $4.8k $4.8k 0.00% Unchanged
73 Allworth Financial LP 0.00% of their portfolio FOLSOM, CA 161161 $2.9k $2.9k 0.00% Unchanged
74 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 7676 $1.4k $1.4k 0.00% New
75 SBI Securities Co., Ltd. 0.00% of their portfolio TOKYO, M0 6868 $1.2k $1.2k 0.00% Unchanged
76 Fortitude Family Office, LLC 0.00% of their portfolio SCOTTSDALE, AZ 4040 $720 $720 0.00% Unchanged
77 Quarry LP 0.00% of their portfolio NEW YORK, NY 2929 $522 $522 0.00% New
78 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 2626 $468 $468 0.00% Unchanged
79 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 2121 $378 $378 0.00% Added +17 +17
80 NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio MONTREAL, A8 33 $54 $54 0.00% New