Crescent Biopharma Inc (CBIO)

Over the past 90 days, Crescent Biopharma Inc. saw eight insider transactions. Fairmount Funds Management LLC executed a significant purchase of $12.38 million in shares on July 16, 2026. Conversely, several executives, including the CEO and CFO, conducted planned sales totaling approximately $1.23 million on June 22, 2026, following the company's recent earnings report.
Ticker: CBIO Exchange: NAS


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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
Buy 16 Jul 2026
Value US$3,335,893.63 | Price 167.57 | Shares 97,217 (+19.9%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2026-07-20 2026-07-16 B Purchase Non-Executive Director Large shareholder
97,217 +19.9%
167.57
US$3,335,894
97,217 +19.9% 167.57 US$3,335,894
2026-06-23 2026-06-22 PlS Planned sale

Chief Financial Officer

Officer
22,333 -17.1%
446.76
US$1,181,285
22,333 -17.1% 446.76 US$1,181,285
2026-06-23 2026-06-22 PlS Planned sale

Chief Scientific Officer

Officer
20,671 +38.6%
353.35
US$1,943,668
20,671 +38.6% 353.35 US$1,943,668
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
2020-11-06 2020-11-04 B Purchase Large shareholder
506,155 +15.8%
2.60
US$1,316,003
506,155 +15.8% 2.60 US$1,316,003
2020-11-06 2020-11-04 B Purchase Large shareholder
674,492 +15.7%
2.60
US$1,753,679
674,492 +15.7% 2.60 US$1,753,679
2020-11-03 2020-10-30 B Purchase Large shareholder
15,472 +2.9%
2.75
US$42,548
15,472 +2.9% 2.75 US$42,548
2020-11-03 2020-10-30 B Purchase Large shareholder
250,755 +8.5%
2.75
US$689,576
250,755 +8.5% 2.75 US$689,576
2020-11-03 2020-10-30 B Purchase Large shareholder
666,385 +18.3%
2.75
US$1,832,559
666,385 +18.3% 2.75 US$1,832,559
2020-03-10 2020-03-09 B Purchase Non-Executive Director
20,000 +111.1%
3.40
US$68,000
20,000 +111.1% 3.40 US$68,000
2019-09-09 2019-09-05 B Purchase Large shareholder
124,956 +30.9%
3.18
US$397,610
124,956 +30.9% 3.18 US$397,610
2019-09-09 2019-09-05 B Purchase Large shareholder
689,834 +30.4%
3.18
US$2,195,052
689,834 +30.4% 3.18 US$2,195,052
2019-09-09 2019-09-05 B Purchase Large shareholder
853,956 +30.7%
3.18
US$2,717,288
853,956 +30.7% 3.18 US$2,717,288
2019-08-15 2019-08-13 B Purchase Non-Executive Director
10,000 +125.0%
3.18
US$31,800
10,000 +125.0% 3.18 US$31,800
2018-10-18 2018-10-18 S Sale

SVP of Research, CSO

Executive Director
3,527 -4.4%
14.02
US$49,449
3,527 -4.4% 14.02 US$49,449
2018-10-18 2018-10-17 S Sale

SVP of Research, CSO

Executive Director
7,273 -8.4%
14.00
US$101,822
7,273 -8.4% 14.00 US$101,822
2018-10-18 2018-10-16 S Sale

SVP of Research, CSO

Executive Director
14,200 -14.1%
14.01
US$198,942
14,200 -14.1% 14.01 US$198,942