There have been 50 recent insider transactions recorded for Crescent Biopharma, Inc. (CBIO), including 32 buys and 0 sells. Total insider buying was valued at $20.01M and total insider selling at RSU Award.
Notable insiders with recent activity include Brumm Joshua T, Lynch Ryan, Scalzo Richard William. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — CBIO
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2025-12-15 |
Brumm Joshua T |
Chief Executive Officer |
RSU Award |
180,467 |
$13.21 |
$2.38M |
180,467 |
| 2025-12-15 |
Lynch Ryan |
See Remarks |
RSU Award |
8,378 |
- |
- |
8,378 |
| 2025-12-15 |
Scalzo Richard William |
Chief Financial Officer |
RSU Award |
14,422 |
- |
- |
14,422 |
| 2025-12-15 |
Mcneill Jonathan |
President and COO |
RSU Award |
78,029 |
$13.21 |
$1.03M |
78,029 |
| 2025-12-15 |
Doughty Christopher Grant |
Chief Business Officer |
RSU Award |
14,714 |
- |
- |
54,194 |
| 2025-12-15 |
Im Ellie Eunkyung |
Chief Medical Officer |
RSU Award |
16,298 |
- |
- |
16,298 |
| 2025-12-15 |
Bispham Barbara Harlin |
See Remarks |
RSU Award |
12,422 |
- |
- |
12,422 |
| 2025-12-15 |
Pinkas Jan |
Chief Scientific Officer |
RSU Award |
17,507 |
- |
- |
17,507 |
| 2025-12-08 |
Brumm Joshua T |
Chief Executive Officer |
RSU Award |
345,672 |
$13.17 |
$4.55M |
345,672 |
| 2025-12-08 |
Mcneill Jonathan |
President and COO |
RSU Award |
172,836 |
$13.17 |
$2.28M |
172,836 |
| 2025-12-04 |
Fairmount Funds Management Llc |
10 Percent Owner |
Informative Buy |
131,434 |
$0.00 |
$131.43 |
1,768,140 |
| 2025-07-16 |
Pinkas Jan |
Chief Scientific Officer |
RSU Award |
142,474 |
$13.14 |
$1.87M |
142,474 |
| 2025-07-07 |
Pinkas Jan |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-06-23 |
Lubner David Charles |
Director |
RSU Award |
9,023 |
$15.30 |
$138.05K |
9,023 |
| 2025-06-23 |
Violin Jonathan |
Director |
RSU Award |
9,023 |
$15.30 |
$138.05K |
9,023 |
| 2025-06-23 |
Fairmount Funds Management Llc |
10 Percent Owner |
RSU Award |
9,023 |
$15.30 |
$138.05K |
9,023 |
| 2025-06-23 |
Moran Susan |
Director |
RSU Award |
9,023 |
$15.30 |
$138.05K |
9,023 |
| 2025-06-23 |
Balcom Alexandra |
Director |
RSU Award |
9,023 |
$15.30 |
$138.05K |
9,023 |
| 2025-06-13 |
Bvf Partners L P/il |
10 Percent Owner |
Other (Buy) |
25,944 |
- |
- |
25,944 |
| 2025-06-13 |
Brumm Joshua T |
Chief Executive Officer |
Unknown |
805,200 |
$6.16 |
$4.96M |
- |
| 2025-06-13 |
Lubner David Charles |
Director |
Unknown |
20,164 |
$9.56 |
$192.77K |
- |
| 2025-06-13 |
Lynch Ryan |
See Remarks |
Unknown |
105,706 |
$6.16 |
$651.15K |
- |
| 2025-06-13 |
Violin Jonathan |
Director |
Unknown |
226,786 |
$6.16 |
$1.4M |
- |
| 2025-06-13 |
Scalzo Richard William |
Chief Financial Officer |
Unknown |
234,383 |
$9.56 |
$2.24M |
- |
| 2025-06-13 |
Fairmount Funds Management Llc |
10 Percent Owner |
Unknown |
1,636,706 |
$0.00 |
$1.64K |
- |
| 2025-06-13 |
Mcneill Jonathan |
See Remarks |
Unknown |
402,600 |
$6.16 |
$2.48M |
- |
| 2025-06-13 |
Moran Susan |
Director |
Unknown |
20,164 |
$6.16 |
$124.21K |
- |
| 2025-06-13 |
Balcom Alexandra |
Director |
Unknown |
20,164 |
$6.16 |
$124.21K |
- |
| 2025-06-13 |
Doughty Christopher Grant |
Chief Business Officer |
Unknown |
152,782 |
$6.16 |
$941.14K |
- |
| 2023-11-20 |
Luo Ying |
Director |
RSU Award |
2,262,755 |
$0.75 |
$1.7M |
2,262,755 |
| 2023-11-20 |
Chen Ruoyu |
Chief Financial Officer |
RSU Award |
578,540 |
$0.75 |
$433.91K |
578,540 |
| 2023-11-20 |
Ye Weiguo |
Chief Operating Officer |
RSU Award |
1,665,115 |
$0.75 |
$1.25M |
1,665,115 |
| 2023-11-20 |
Ma Songjiang |
President |
RSU Award |
4,510,047 |
$0.75 |
$3.38M |
4,510,047 |
| 2023-11-20 |
Wu Charles C |
Chief Executive Officer |
RSU Award |
170,417 |
$0.75 |
$127.81K |
170,417 |
| 2023-10-31 |
Usman Nassim |
Director |
RSU Award |
1,866 |
$6.93 |
$12.93K |
1,866 |
| 2023-10-31 |
Eastling Thomas Wilson |
Director |
RSU Award |
1,866 |
$6.93 |
$12.93K |
1,866 |
| 2023-10-31 |
Luo Ying |
Director |
RSU Award |
1,866 |
$6.93 |
$12.93K |
1,866 |
| 2023-10-31 |
Carmichael Gordon |
Director |
RSU Award |
1,866 |
$6.93 |
$12.93K |
1,866 |
| 2023-10-31 |
Chen Ruoyu |
Interim CFO |
RSU Award |
34,380 |
$6.93 |
$238.25K |
34,380 |
| 2023-10-31 |
Parry Renate |
Director |
RSU Award |
1,866 |
$6.93 |
$12.93K |
1,866 |
| 2023-10-31 |
Ying Han |
Director |
RSU Award |
1,866 |
$6.93 |
$12.93K |
1,866 |
| 2023-10-30 |
Carmichael Gordon |
Officer |
Unknown |
- |
- |
- |
- |
| 2023-10-30 |
Chen Ruoyu |
Officer |
Unknown |
- |
- |
- |
- |
| 2023-10-30 |
Parry Renate |
Officer |
Unknown |
- |
- |
- |
- |
| 2023-10-30 |
Ye Weiguo |
Officer |
Unknown |
- |
- |
- |
- |
| 2023-10-30 |
Ma Songjiang |
Officer |
Unknown |
- |
- |
- |
- |
| 2023-10-30 |
Wu Charles C |
Officer |
Unknown |
- |
- |
- |
- |
| 2023-10-30 |
Ying Han |
Officer |
Unknown |
- |
- |
- |
- |
| 2023-10-30 |
Gni Group Ltd. |
10 Percent Owner |
Other (Buy) |
63,588,119 |
- |
- |
64,005,887 |
| 2023-10-30 |
Luo Ying |
Director |
Other (Buy) |
2,840,376 |
- |
- |
2,840,376 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
