Crescent Biopharma, Inc. (CBIO)

Crescent Biopharma Inc. experienced twelve transactions d'initiés recently. Fairmount Funds Management LLC executed a significant purchase totaling over 12 million dollars in July. Conversely, executives including Joshua T. Brumm and Jonathan McNeill filed multiple proposed sales throughout September. These activities follow a positive earnings report released last July, despite a slight ninety-day stock price decline.
Ticker: CBIO Exchange: NAS


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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Crescent Biopharma, Inc.. Upgrade to see score, net flow, insiders and the full signal context.

Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
2.3
Brumm Joshua T Chief Executive Officer Executive Director
Transaction date
Planned sale
Price
289.07
Quantity 43,522 +13.5%
Value US$2,104,439
1.4
McNeill Jonathan President and COO Officer
Transaction date
Planned sale
Price
385.02
Quantity 61,391 -25.0%
Value US$2,649,660
2.3
Joshua T Brumm Officer; Director Executive Director
Transaction date
Proposed sale
Price
469.88
Quantity 21,939
Value US$520,716
1.4
Jonathan McNeill Officer Officer
Transaction date
Proposed sale
Price
17.18
Quantity 1,000
Value US$100,000
Im Ellie Eunkyung Chief Medical Officer Officer
Transaction date
Planned sale
Price
17.90
Quantity 1,000 -2.8%
Value US$100,000
Lynch Ryan See Remarks Officer
Transaction date
Planned sale
Price
17.90
Quantity 1,000 -1.7%
Value US$100,000
Pinkas Jan Chief Scientific Officer Officer
Transaction date
Planned sale
Price
17.90
Quantity 1,000 -3.0%
Value US$100,000
Bispham Barbara Harlin See Remarks Officer
Transaction date
Planned sale
Price
17.90
Quantity 1,000 -3.2%
Value US$100,000
2.3
Brumm Joshua T Chief Executive Officer Executive Director
Transaction date
Planned sale
Price
17.90
Quantity 1,000 -0.6%
Value US$100,000
1.4
McNeill Jonathan President and COO Officer
Transaction date
Planned sale
Price
17.90
Quantity 1,000 -0.5%
Value US$100,000
3.0
Scalzo Richard William Chief Financial Officer Officer
Transaction date
Planned sale
Price
17.90
Quantity 1,000 -2.8%
Value US$100,000
2.3
Joshua T Brumm Officer; Director Executive Director
Transaction date
Proposed sale
Price
18.80
Quantity 1,000
Value US$100,000
1.4
Jonathan McNeill Officer Officer
Transaction date
Proposed sale
Price
18.80
Quantity 1,000
Value US$100,000
3.3
Fairmount Funds Management LLC Non-Executive Director Large shareholder
Transaction date
Purchase
Price
14.50
Quantity 853,450 +31.1%
Value US$12,375,025
3.0
Scalzo Richard William Chief Financial Officer Officer
Transaction date
Planned sale
Price
17.99
Quantity 1,112 -5.2%
Value US$20,005
Pinkas Jan Chief Scientific Officer Officer
Transaction date
Planned sale
Price
17.99
Quantity 1,288 -5.5%
Value US$23,171
Lynch Ryan See Remarks Officer
Transaction date
Planned sale
Price
17.99
Quantity 465 -3.2%
Value US$8,365
Bispham Barbara Harlin See Remarks Officer
Transaction date
Planned sale
Price
17.99
Quantity 1,218 -5.9%
Value US$21,912
Im Ellie Eunkyung Chief Medical Officer Officer
Transaction date
Planned sale
Price
17.99
Quantity 1,219 -5.2%
Value US$21,930
2.3
Brumm Joshua T Chief Executive Officer Executive Director
Transaction date
Planned sale
Price
17.99
Quantity 42,305 -13.1%
Value US$761,067
1.4
McNeill Jonathan President and COO Officer
Transaction date
Planned sale
Price
17.99
Quantity 20,549 -12.9%
Value US$369,677
3.3
Fairmount Funds Management LLC Non-Executive Director Large shareholder
Transaction date
Purchase
Price
13.41
Quantity 1,360,000 +98.0%
Value US$18,237,600
3.5
Rock Edwin Chief Medical Officer Officer
Transaction date
Purchase
Price
0.27
Quantity 115,000 +20.3%
Value US$30,716
3.5
Rock Edwin Chief Medical Officer Officer
Transaction date
Purchase
Price
0.25
Quantity 190,000 +50.6%
Value US$48,108
3.4
Hahn Brian M. SVP Finance, CFO Officer
Transaction date
Purchase
Price
0.25
Quantity 17,500 +32.9%
Value US$4,335
3.5
Rock Edwin Chief Medical Officer Officer
Transaction date
Purchase
Price
1.38
Quantity 30,403 +8.8%
Value US$41,956
3.5
Rock Edwin Chief Medical Officer Officer
Transaction date
Purchase
Price
1.38
Quantity 35,000 +11.3%
Value US$48,300
3.4
Hahn Brian M. SVP Finance, CFO Officer
Transaction date
Sale
Price
1.95
Quantity 3,700 -6.5%
Value US$7,215
3.4
Hahn Brian M. Officer Officer
Transaction date
Proposed sale
Price
1.96
Quantity 4,313
Value US$8,453
2.6
JUNIUS DANIEL M Non-Executive Director
Transaction date
Purchase
Price
1.56
Quantity 30,000 +47.4%
Value US$46,800
2.4
Johnson Bruce S SVP & Chief Commercial Officer Officer
Transaction date
Purchase
Price
1.57
Quantity 13,500 +10.8%
Value US$21,195
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
3.12
Quantity 1,351,092 -37.7%
Value US$4,213,786
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
3.12
Quantity 1,648,908 -37.7%
Value US$5,142,614
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
3.26
Quantity 293,645 -7.6%
Value US$958,428
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
3.26
Quantity 358,371 -7.6%
Value US$1,169,687
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
2.76
Quantity 32,139 -0.8%
Value US$88,659
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
2.76
Quantity 39,223 -0.8%
Value US$108,201
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
2.91
Quantity 45,930 -1.2%
Value US$133,643
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
2.91
Quantity 56,054 -1.2%
Value US$163,100
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
2.99
Quantity 78,730 -1.9%
Value US$235,411
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
2.99
Quantity 96,084 -1.9%
Value US$287,301
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
3.02
Quantity 54,645 -1.3%
Value US$165,028
2.4
SANDELL SCOTT D Large shareholder
Transaction date
Sale
Price
3.02
Quantity 66,690 -1.3%
Value US$201,404
3.5
Rock Edwin Chief Medical Officer Officer
Transaction date
Purchase
Price
2.25
Quantity 110,000 +55.0%
Value US$247,500
2.6
JUNIUS DANIEL M Non-Executive Director
Transaction date
Purchase
Price
1.87
Quantity 20,000 +46.2%
Value US$37,400
3.5
Rock Edwin Chief Medical Officer Officer
Transaction date
Purchase
Price
1.66
Quantity 100,000 +100.0%
Value US$166,000
3.5
Rock Edwin Chief Medical Officer Officer
Transaction date
Purchase
Price
1.43
Quantity 100,000 +inf%
Value US$143,000
3.3
PEARSON TIMOTHY R Non-Executive Director
Transaction date
Purchase
Price
1.29
Quantity 19,400 +369.5%
Value US$25,026
3.3
Semerjian Harout Chief Executive Officer Executive Director
Transaction date
Purchase
Price
1.29
Quantity 25,000 +inf%
Value US$32,250
3.4
Hahn Brian M. SVP Finance, CFO Officer
Transaction date
Purchase
Price
1.06
Quantity 20,000 +54.3%
Value US$21,200
3.8
Girard Armand SVP, Chief Business Officer Officer
Transaction date
Purchase
Price
1.05
Quantity 6,500 +28.7%
Value US$6,825
3.8
Magnani John L. SVP of Research, CSO Officer
Transaction date
Purchase
Price
1.17
Quantity 45,045 +14.0%
Value US$52,703
3.4
Hahn Brian M. SVP Finance, CFO Officer
Transaction date
Sale
Price
1.09
Quantity 2,917 -7.3%
Value US$3,180
3.8
Magnani John L. SVP of Research, CSO Officer
Transaction date
Sale
Price
1.09
Quantity 3,227 -1.0%
Value US$3,517
3.8
Girard Armand SVP, Chief Business Officer Officer
Transaction date
Sale
Price
1.09
Quantity 2,339 -9.4%
Value US$2,550
0.5
Andrews Patricia S Non-Executive Director
Transaction date
Purchase
Price
2.05
Quantity 40,000 +761.9%
Value US$82,000
2.3
King Rachel K. President, CEO Executive Director
Transaction date
Planned sale
Price
3.91
Quantity 84,176 -19.1%
Value US$329,128
4.0
BVF PARTNERS L P/IL Large shareholder
Transaction date
Purchase
Price
2.60
Quantity 86,090 +15.8%
Value US$223,834
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2026-09-18 2026-09-18 PlS Planned sale

Chief Executive Officer

Executive Director
43,522 +13.5%
289.07
US$2,104,439
43,522 +13.5% 289.07 US$2,104,439
2026-09-18 2026-09-18 PlS Planned sale

President and COO

Officer
61,391 -25.0%
385.02
US$2,649,660
61,391 -25.0% 385.02 US$2,649,660
2026-09-17 2026-09-18 PrS Proposed sale

Officer; Director

Executive Director
21,939
469.88
US$520,716
21,939 469.88 US$520,716
2026-09-17 2026-09-18 PrS Proposed sale

Officer

Officer
1,000
17.18
US$100,000
1,000 17.18 US$100,000
2026-09-18 2026-09-16 PlS Planned sale

Chief Medical Officer

Officer
1,000 -2.8%
17.90
US$100,000
1,000 -2.8% 17.90 US$100,000
2026-09-18 2026-09-16 PlS Planned sale

See Remarks

Officer
1,000 -1.7%
17.90
US$100,000
1,000 -1.7% 17.90 US$100,000
2026-09-18 2026-09-16 PlS Planned sale

Chief Scientific Officer

Officer
1,000 -3.0%
17.90
US$100,000
1,000 -3.0% 17.90 US$100,000
2026-09-18 2026-09-16 PlS Planned sale

See Remarks

Officer
1,000 -3.2%
17.90
US$100,000
1,000 -3.2% 17.90 US$100,000
2026-09-18 2026-09-16 PlS Planned sale

Chief Executive Officer

Executive Director
1,000 -0.6%
17.90
US$100,000
1,000 -0.6% 17.90 US$100,000
2026-09-18 2026-09-16 PlS Planned sale

President and COO

Officer
1,000 -0.5%
17.90
US$100,000
1,000 -0.5% 17.90 US$100,000
2026-09-18 2026-09-16 PlS Planned sale

Chief Financial Officer

Officer
1,000 -2.8%
17.90
US$100,000
1,000 -2.8% 17.90 US$100,000
2026-09-16 2026-09-16 PrS Proposed sale

Officer; Director

Executive Director
1,000
18.80
US$100,000
1,000 18.80 US$100,000
2026-09-16 2026-09-16 PrS Proposed sale

Officer

Officer
1,000
18.80
US$100,000
1,000 18.80 US$100,000
2026-07-20 2026-07-16 B Purchase Non-Executive Director Large shareholder
853,450 +31.1%
14.50
US$12,375,025
853,450 +31.1% 14.50 US$12,375,025
2026-06-23 2026-06-22 PlS Planned sale

Chief Financial Officer

Officer
1,112 -5.2%
17.99
US$20,005
1,112 -5.2% 17.99 US$20,005
2026-06-23 2026-06-22 PlS Planned sale

Chief Scientific Officer

Officer
1,288 -5.5%
17.99
US$23,171
1,288 -5.5% 17.99 US$23,171
2026-06-23 2026-06-22 PlS Planned sale

See Remarks

Officer
465 -3.2%
17.99
US$8,365
465 -3.2% 17.99 US$8,365
2026-06-23 2026-06-22 PlS Planned sale

See Remarks

Officer
1,218 -5.9%
17.99
US$21,912
1,218 -5.9% 17.99 US$21,912
2026-06-23 2026-06-22 PlS Planned sale

Chief Medical Officer

Officer
1,219 -5.2%
17.99
US$21,930
1,219 -5.2% 17.99 US$21,930
2026-06-23 2026-06-22 PlS Planned sale

Chief Executive Officer

Executive Director
42,305 -13.1%
17.99
US$761,067
42,305 -13.1% 17.99 US$761,067
2026-06-23 2026-06-22 PlS Planned sale

President and COO

Officer
20,549 -12.9%
17.99
US$369,677
20,549 -12.9% 17.99 US$369,677
2025-12-08 2025-12-04 B Purchase Non-Executive Director Large shareholder
1,360,000 +98.0%
13.41
US$18,237,600
1,360,000 +98.0% 13.41 US$18,237,600
2024-08-09 2024-08-08 S Sale Large shareholder
260,873 -4.0%
0.19
US$50,009
260,873 -4.0% 0.19 US$50,009
2024-08-09 2024-08-07 S Sale Large shareholder
61,488 -0.9%
0.18
US$11,197
61,488 -0.9% 0.18 US$11,197
2024-08-07 2024-08-06 S Sale Large shareholder
55,732 -0.8%
0.18
US$10,188
55,732 -0.8% 0.18 US$10,188
2024-08-07 2024-08-05 S Sale Large shareholder
164,523 -2.4%
0.19
US$30,996
164,523 -2.4% 0.19 US$30,996
2024-08-05 2024-08-02 S Sale Large shareholder
286,200 -4.0%
0.20
US$57,354
286,200 -4.0% 0.20 US$57,354
2024-08-05 2024-08-01 S Sale Large shareholder
63,564 -0.9%
0.22
US$13,743
63,564 -0.9% 0.22 US$13,743
2024-07-30 2024-07-30 S Sale Large shareholder
756,835 -9.5%
0.22
US$167,185
756,835 -9.5% 0.22 US$167,185
2024-07-30 2024-07-29 S Sale Large shareholder
363,949 -4.4%
0.24
US$85,637
363,949 -4.4% 0.24 US$85,637
2024-07-30 2024-07-26 S Sale Large shareholder
258,335 -3.0%
0.24
US$62,440
258,335 -3.0% 0.24 US$62,440
2024-06-24 2024-06-21 B Purchase

Chief Medical Officer

Officer
115,000 +20.3%
0.27
US$30,716
115,000 +20.3% 0.27 US$30,716
2024-06-24 2024-06-20 B Purchase

Chief Medical Officer

Officer
190,000 +50.6%
0.25
US$48,108
190,000 +50.6% 0.25 US$48,108
2024-06-20 2024-06-18 B Purchase

SVP Finance, CFO

Officer
17,500 +32.9%
0.25
US$4,335
17,500 +32.9% 0.25 US$4,335
2023-09-25 2023-09-22 B Purchase

Chief Medical Officer

Officer
30,403 +8.8%
1.38
US$41,956
30,403 +8.8% 1.38 US$41,956
2023-09-25 2023-09-21 B Purchase

Chief Medical Officer

Officer
35,000 +11.3%
1.38
US$48,300
35,000 +11.3% 1.38 US$48,300
2023-05-18 2023-05-17 S Sale

SVP Finance, CFO

Officer
3,700 -6.5%
1.95
US$7,215
3,700 -6.5% 1.95 US$7,215
2023-05-17 2023-05-17 PrS Proposed sale

Officer

Officer
4,313
1.96
US$8,453
4,313 1.96 US$8,453
2023-05-11 2023-05-10 B Purchase Non-Executive Director
30,000 +47.4%
1.56
US$46,800
30,000 +47.4% 1.56 US$46,800
2023-05-09 2023-05-08 B Purchase

SVP & Chief Commercial Officer

Officer
13,500 +10.8%
1.57
US$21,195
13,500 +10.8% 1.57 US$21,195
2023-02-28 2023-02-24 B Purchase Large shareholder
100,000 +1.2%
1.70
US$170,000
100,000 +1.2% 1.70 US$170,000
2023-02-23 2023-02-23 B Purchase Large shareholder
200,000 +2.4%
1.75
US$350,760
200,000 +2.4% 1.75 US$350,760
2023-02-23 2023-02-22 B Purchase Large shareholder
150,000 +1.8%
1.79
US$268,995
150,000 +1.8% 1.79 US$268,995
2023-02-23 2023-02-21 B Purchase Large shareholder
50,000 +0.6%
1.85
US$92,500
50,000 +0.6% 1.85 US$92,500
2023-02-17 2023-02-17 B Purchase Large shareholder
200,000 +2.5%
1.71
US$341,000
200,000 +2.5% 1.71 US$341,000
2023-02-17 2023-02-16 B Purchase Large shareholder
315,266 +4.2%
1.68
US$531,129
315,266 +4.2% 1.68 US$531,129
2023-02-17 2023-02-15 B Purchase Large shareholder
1,000,000 +15.2%
2.16
US$2,155,800
1,000,000 +15.2% 2.16 US$2,155,800
2023-02-13 2023-02-09 B Purchase Large shareholder
11,451 +0.2%
3.24
US$37,123
11,451 +0.2% 3.24 US$37,123
2023-01-27 2023-01-26 S Sale Large shareholder
1,351,092 -37.7%
3.12
US$4,213,786
1,351,092 -37.7% 3.12 US$4,213,786
2023-01-27 2023-01-26 S Sale Large shareholder
1,648,908 -37.7%
3.12
US$5,142,614
1,648,908 -37.7% 3.12 US$5,142,614
2023-01-27 2023-01-25 S Sale Large shareholder
293,645 -7.6%
3.26
US$958,428
293,645 -7.6% 3.26 US$958,428
2023-01-27 2023-01-25 S Sale Large shareholder
358,371 -7.6%
3.26
US$1,169,687
358,371 -7.6% 3.26 US$1,169,687
2023-01-06 2023-01-05 S Sale Large shareholder
32,139 -0.8%
2.76
US$88,659
32,139 -0.8% 2.76 US$88,659
2023-01-06 2023-01-05 S Sale Large shareholder
39,223 -0.8%
2.76
US$108,201
39,223 -0.8% 2.76 US$108,201
2023-01-04 2023-01-04 S Sale Large shareholder
45,930 -1.2%
2.91
US$133,643
45,930 -1.2% 2.91 US$133,643
2023-01-04 2023-01-04 S Sale Large shareholder
56,054 -1.2%
2.91
US$163,100
56,054 -1.2% 2.91 US$163,100
2023-01-04 2023-01-03 S Sale Large shareholder
78,730 -1.9%
2.99
US$235,411
78,730 -1.9% 2.99 US$235,411
2023-01-04 2023-01-03 S Sale Large shareholder
96,084 -1.9%
2.99
US$287,301
96,084 -1.9% 2.99 US$287,301
2023-01-04 2022-12-30 S Sale Large shareholder
54,645 -1.3%
3.02
US$165,028
54,645 -1.3% 3.02 US$165,028
2023-01-04 2022-12-30 S Sale Large shareholder
66,690 -1.3%
3.02
US$201,404
66,690 -1.3% 3.02 US$201,404
2022-12-27 2022-12-22 B Purchase

Chief Medical Officer

Officer
110,000 +55.0%
2.25
US$247,500
110,000 +55.0% 2.25 US$247,500
2022-11-18 2022-11-17 B Purchase Non-Executive Director
20,000 +46.2%
1.87
US$37,400
20,000 +46.2% 1.87 US$37,400
2022-11-16 2022-11-15 B Purchase

Chief Medical Officer

Officer
100,000 +100.0%
1.66
US$166,000
100,000 +100.0% 1.66 US$166,000
2022-11-16 2022-11-14 B Purchase

Chief Medical Officer

Officer
100,000 +inf%
1.43
US$143,000
100,000 +inf% 1.43 US$143,000
2022-11-14 2022-11-11 B Purchase Non-Executive Director
19,400 +369.5%
1.29
US$25,026
19,400 +369.5% 1.29 US$25,026
2022-11-14 2022-11-11 B Purchase

Chief Executive Officer

Executive Director
25,000 +inf%
1.29
US$32,250
25,000 +inf% 1.29 US$32,250
2022-11-14 2022-11-11 B Purchase

SVP Finance, CFO

Officer
20,000 +54.3%
1.06
US$21,200
20,000 +54.3% 1.06 US$21,200
2022-11-14 2022-11-11 B Purchase

SVP, Chief Business Officer

Officer
6,500 +28.7%
1.05
US$6,825
6,500 +28.7% 1.05 US$6,825
2022-11-14 2022-11-11 B Purchase

SVP of Research, CSO

Officer
45,045 +14.0%
1.17
US$52,703
45,045 +14.0% 1.17 US$52,703
2022-03-10 2022-03-09 S Sale

SVP Finance, CFO

Officer
2,917 -7.3%
1.09
US$3,180
2,917 -7.3% 1.09 US$3,180
2022-03-10 2022-03-09 S Sale

SVP of Research, CSO

Officer
3,227 -1.0%
1.09
US$3,517
3,227 -1.0% 1.09 US$3,517
2022-03-10 2022-03-09 S Sale

SVP, Chief Business Officer

Officer
2,339 -9.4%
1.09
US$2,550
2,339 -9.4% 1.09 US$2,550
2021-11-18 2021-11-16 B Purchase Non-Executive Director
40,000 +761.9%
2.05
US$82,000
40,000 +761.9% 2.05 US$82,000
2020-12-30 2020-12-28 PlS Planned sale

President, CEO

Executive Director
84,176 -19.1%
3.91
US$329,128
84,176 -19.1% 3.91 US$329,128
2020-11-06 2020-11-04 B Purchase Large shareholder
86,090 +15.8%
2.60
US$223,834
86,090 +15.8% 2.60 US$223,834