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CRESCENT BIOPHARMA, INC.

CBIO Net buying
CIK 0001253689 #2943 in the set updated 21 Sep 2026
Bought (12 mo)
$30.61M
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$1.51M
$1.51M on a plan · $0.00 straight out of an exercise
Sold at will
$0.00
0 of 16 sales
Net
+$29.10M
+$30.61M against sales at will

By person

10 insiders · 18 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Fairmount Funds Management LLC entity
Director
$30.61M (2)
+$30.61M
3,601,316
$60.18M
+159.5%
Brumm Joshua T
Chief Executive Officer
$920.84K (3) scheduled
−$920.84K
271,765
$4.54M
+1.3%
McNeill Jonathan
President and COO
$446.91K (3) scheduled
−$446.91K
134,588
$2.25M
+0.3%
Pinkas Jan
Chief Scientific Officer
$34.95K (2) scheduled
−$34.95K
21,581
$360.62K
+2,016%
Im Ellie Eunkyung
Chief Medical Officer
$33.08K (2) scheduled
−$33.08K
21,446
$358.36K
+977.7%
Bispham Barbara Harlin
See Remarks
$33.01K (2) scheduled
−$33.01K
18,710
$312.64K
+780.1%
Scalzo Richard William
Chief Financial Officer
$30.17K (2) scheduled
−$30.17K
19,730
$329.69K
+892.5%
Lynch Ryan
See Remarks
$12.66K (2) scheduled
−$12.66K
13,631
$227.77K
+596.2%
BVF PARTNERS L P/IL entity
10% owner
62,383
$1.04M
Doughty Christopher Grant
Chief Business Officer
62,194
$1.04M
+57.5%

No percentages here. This company's share count has moved by a factor of 4.6 over the window, from 13,892,516 to 64,532,091 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Insider
Date
Role
Action
Shares
Price
Amount
McNeill Jonathan
18 Sep 2026
President and COO
Sold on a plan
3,839
$16.71
$64.15K
Brumm Joshua T
18 Sep 2026
Chief Executive Officer
Sold on a plan
7,837
$16.71
$130.96K
McNeill Jonathan
16 Sep 2026
President and COO
Sold on a plan
731
$17.90
$13.08K
Brumm Joshua T
16 Sep 2026
Chief Executive Officer
Sold on a plan
1,610
$17.90
$28.82K
Bispham Barbara Harlin
16 Sep 2026
See Remarks
Sold on a plan
620
$17.90
$11.10K
Scalzo Richard William
16 Sep 2026
Chief Financial Officer
Sold on a plan
568
$17.90
$10.17K
Im Ellie Eunkyung
16 Sep 2026
Chief Medical Officer
Sold on a plan
623
$17.90
$11.15K
Pinkas Jan
16 Sep 2026
Chief Scientific Officer
Sold on a plan
658
$17.90
$11.78K
Lynch Ryan
16 Sep 2026
See Remarks
Sold on a plan
240
$17.90
$4.30K
Brumm Joshua T
22 Jun 2026
Chief Executive Officer
Sold on a plan
42,305
$17.99
$761.07K
McNeill Jonathan
22 Jun 2026
President and COO
Sold on a plan
20,549
$17.99
$369.68K
Im Ellie Eunkyung
22 Jun 2026
Chief Medical Officer
Sold on a plan
1,219
$17.99
$21.93K
Bispham Barbara Harlin
22 Jun 2026
See Remarks
Sold on a plan
1,218
$17.99
$21.91K
Scalzo Richard William
22 Jun 2026
Chief Financial Officer
Sold on a plan
1,112
$17.99
$20.00K
Pinkas Jan
22 Jun 2026
Chief Scientific Officer
Sold on a plan
1,288
$17.99
$23.17K
Lynch Ryan
22 Jun 2026
See Remarks
Sold on a plan
465
$17.99
$8.37K

What was left out

Form 4 filings counted 31
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 3
Sales on a Rule 10b5-1 plan 16
Sales straight out of an exercise 0
Sales at will 0
Transactions with no price 0
Shares from compensation/vesting 197,365
History held since 4 Oct 2016