Bolt Biotherapeutics Inc (BOLT)

Bolt Biotherapeutics experienced nine insider trading transactions recently, all involving sales totaling approximately $128,281. Key executives, including the CEO and COO, offloaded shares mid-September. This activity follows a 63.8% stock price increase over ninety days, despite a significant miss in the latest earnings report. No recent purchases were recorded by company leadership.
Ticker: BOLT Exchange: NSM


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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 Bolt Biotherapeutics 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
Nemec Sarah Senior VP, Finance and PAO Officer
Transaction date
Sale
Price
445.15
Quantity 34,698 -43.8%
Value US$3,199,403
Yonehiro Grant Chief Operating Officer Officer
Transaction date
Sale
Price
262.55
Quantity 72,415 +12.1%
Value US$3,776,666
1.1
Quinn William P. President, CEO and CFO Executive Director
Transaction date
Sale
Price
53.85
Quantity 59,857 -0.3%
Value US$388,830
Nemec Sarah Senior VP, Finance and PAO Officer
Transaction date
Sale
Price
3.32
Quantity 2,922 -12.1%
Value US$9,696
Yonehiro Grant Chief Operating Officer Officer
Transaction date
Sale
Price
3.32
Quantity 4,909 -16.9%
Value US$16,290
1.1
Quinn William P. President, CEO and CFO Executive Director
Transaction date
Sale
Price
3.32
Quantity 6,545 -15.9%
Value US$21,718
Nemec Sarah Senior VP, Finance and PAO Officer
Transaction date
Sale
Price
3.77
Quantity 843 -3.4%
Value US$3,181
Yonehiro Grant Chief Operating Officer Officer
Transaction date
Sale
Price
3.77
Quantity 1,417 -4.7%
Value US$5,348
1.1
Quinn William P. President, CEO and CFO Executive Director
Transaction date
Sale
Price
3.77
Quantity 1,889 -4.4%
Value US$7,129
Nemec Sarah Senior VP, Finance and PAO Officer
Transaction date
Planned purchase
Price
3.88
Quantity 509 +36.0%
Value US$1,973
1.1
Quinn William P. President, CEO and CFO Executive Director
Transaction date
Planned purchase
Price
3.88
Quantity 637 +27.5%
Value US$2,469
Nemec Sarah Senior VP, Finance and PAO Officer
Transaction date
Planned purchase
Price
4.61
Quantity 125 +9.7%
Value US$576
1.1
Quinn William P. President, CEO and CFO Executive Director
Transaction date
Planned purchase
Price
4.61
Quantity 125 +5.7%
Value US$576
1.1
Quinn William P. President, CEO and CFO Executive Director
Transaction date
Planned purchase
Price
5.49
Quantity 125 +6.1%
Value US$686
Nemec Sarah Senior VP, Finance and PAO Officer
Transaction date
Planned purchase
Price
5.49
Quantity 125 +15.3%
Value US$686
Nemec Sarah Senior VP, Finance and PAO Officer
Transaction date
Planned purchase
Price
0.50
Quantity 2,500 +17.7%
Value US$1,241
1.1
Quinn William P. President, CEO and CFO Executive Director
Transaction date
Planned purchase
Price
0.50
Quantity 2,500 +6.4%
Value US$1,241
Nemec Sarah Senior VP, Finance and PAO Officer
Transaction date
Planned purchase
Price
0.64
Quantity 2,500 +22.0%
Value US$1,594
1.1
Quinn William P. President, CEO and CFO Executive Director
Transaction date
Planned purchase
Price
0.64
Quantity 2,500 +6.9%
Value US$1,594
1.1
Quinn William P. Chief Financial Officer Officer
Transaction date
Purchase
Price
0.95
Quantity 7,500 +26.1%
Value US$7,125
1.1
Quinn William P. Chief Financial Officer Officer
Transaction date
Planned purchase
Price
0.78
Quantity 2,500 +9.5%
Value US$1,955
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.86
Quantity 14,934 -5.6%
Value US$12,815
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.86
Quantity 108,145 -5.6%
Value US$92,799
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.91
Quantity 3,131 -1.2%
Value US$2,837
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.91
Quantity 22,674 -1.2%
Value US$20,543
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Sale
Price
0.90
Quantity 1,457 -1.3%
Value US$1,311
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Sale
Price
0.90
Quantity 1,707 -0.1%
Value US$1,536
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.90
Quantity 236 -0.1%
Value US$213
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.90
Quantity 1,707 -0.1%
Value US$1,539
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.92
Quantity 3,792 -1.4%
Value US$3,489
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.92
Quantity 27,465 -1.4%
Value US$25,268
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Sale
Price
0.92
Quantity 23,443 -17.2%
Value US$21,568
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Sale
Price
0.92
Quantity 3,792 -1.4%
Value US$3,489
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Sale
Price
0.92
Quantity 27,465 -1.4%
Value US$25,268
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.93
Quantity 1,134 -0.4%
Value US$1,055
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.93
Quantity 8,211 -0.4%
Value US$7,636
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Sale
Price
0.93
Quantity 7,009 -4.9%
Value US$6,518
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Sale
Price
0.93
Quantity 1,134 -0.4%
Value US$1,055
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Sale
Price
0.93
Quantity 8,211 -0.4%
Value US$7,636
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.96
Quantity 1,040 -0.4%
Value US$998
0.9
ENGLEMAN EDGAR Non-Executive Director
Transaction date
Sale
Price
0.96
Quantity 7,531 -0.4%
Value US$7,230
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Sale
Price
0.96
Quantity 6,429 -4.3%
Value US$6,172
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Sale
Price
0.96
Quantity 7,531 -0.4%
Value US$7,230
1.1
Quinn William P. Chief Financial Officer Officer
Transaction date
Planned purchase
Price
1.18
Quantity 1,829 +7.5%
Value US$2,161
2.3
Novo Holdings A/S Large shareholder
Transaction date
Sale
Price
2.00
Quantity 800,000 -17.8%
Value US$1,600,000
1.1
Quinn William P. Chief Financial Officer Officer
Transaction date
Purchase
Price
4.72
Quantity 5,000 +33.0%
Value US$23,575
Perez Edith A. Chief Medical Officer Officer
Transaction date
Planned purchase
Price
4.64
Quantity 411 +44.8%
Value US$1,907
1.1
Quinn William P. Chief Financial Officer Officer
Transaction date
Planned purchase
Price
4.64
Quantity 35 +0.2%
Value US$162
Perez Edith A. Chief Medical Officer Officer
Transaction date
Planned purchase
Price
16.65
Quantity 917 New position
Value US$15,268
1.1
Quinn William P. Chief Financial Officer Officer
Transaction date
Planned purchase
Price
16.65
Quantity 1,221 +8.8%
Value US$20,330
2.3
Novo Holdings A/S Large shareholder
Transaction date
Purchase
Price
20.00
Quantity 400,000 +9.7%
Value US$8,000,000
0.9
ENGLEMAN EDGAR Non-Executive Director Large shareholder
Transaction date
Purchase
Price
20.00
Quantity 24,267 +9.6%
Value US$485,340
0.9
ENGLEMAN EDGAR Non-Executive Director Large shareholder
Transaction date
Sale
Price
20.00
Quantity 20 -0.0%
Value US$400
0.9
ENGLEMAN EDGAR Non-Executive Director Large shareholder
Transaction date
Purchase
Price
20.00
Quantity 175,733 +9.6%
Value US$3,514,660
0.9
ENGLEMAN EDGAR Non-Executive Director Large shareholder
Transaction date
Sale
Price
20.00
Quantity 144 -0.0%
Value US$2,880
Khanna Ashish Siri Ram Non-Executive Director
Transaction date
Purchase
Price
20.00
Quantity 1,200 New position
Value US$24,000
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Purchase
Price
20.00
Quantity 150,000 New position
Value US$3,000,000
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Purchase
Price
20.00
Quantity 24,267 +9.6%
Value US$485,340
3.7
Vivo Capital VIII, LLC Large shareholder
Transaction date
Purchase
Price
20.00
Quantity 175,733 +9.6%
Value US$3,514,660
2.9
HEALY JAMES Non-Executive Director
Transaction date
Purchase
Price
20.00
Quantity 450,000 +19.5%
Value US$9,000,000
SHAH MAHENDRA Non-Executive Director
Transaction date
Sale
Price
20.00
Quantity 62 -0.0%
Value US$1,240
3.4
LAPORTE KATHLEEN Non-Executive Director
Transaction date
Purchase
Price
20.00
Quantity 1,200 New position
Value US$24,000
1.1
Quinn William P. Chief Financial Officer Officer
Transaction date
Purchase
Price
20.00
Quantity 1,200 +9.5%
Value US$24,000
Schatzman Randall C Chief Executive Officer Executive Director
Transaction date
Purchase
Price
20.00
Quantity 1,500 New position
Value US$30,000
Khanna Ashish Siri Ram Non-Executive Director
Transaction date
Purchase
Price
20.00
Quantity 1,000 New position
Value US$20,000
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2026-09-21 2026-09-18 S Sale

Senior VP, Finance and PAO

Officer
34,698 -43.8%
445.15
US$3,199,403
34,698 -43.8% 445.15 US$3,199,403
2026-09-21 2026-09-18 S Sale

Chief Operating Officer

Officer
72,415 +12.1%
262.55
US$3,776,666
72,415 +12.1% 262.55 US$3,776,666
2026-09-21 2026-09-18 S Sale

President, CEO and CFO

Executive Director
59,857 -0.3%
53.85
US$388,830
59,857 -0.3% 53.85 US$388,830
2026-09-21 2026-09-17 S Sale

Senior VP, Finance and PAO

Officer
2,922 -12.1%
3.32
US$9,696
2,922 -12.1% 3.32 US$9,696
2026-09-21 2026-09-17 S Sale

Chief Operating Officer

Officer
4,909 -16.9%
3.32
US$16,290
4,909 -16.9% 3.32 US$16,290
2026-09-21 2026-09-17 S Sale

President, CEO and CFO

Executive Director
6,545 -15.9%
3.32
US$21,718
6,545 -15.9% 3.32 US$21,718
2026-09-21 2026-09-16 S Sale

Senior VP, Finance and PAO

Officer
843 -3.4%
3.77
US$3,181
843 -3.4% 3.77 US$3,181
2026-09-21 2026-09-16 S Sale

Chief Operating Officer

Officer
1,417 -4.7%
3.77
US$5,348
1,417 -4.7% 3.77 US$5,348
2026-09-21 2026-09-16 S Sale

President, CEO and CFO

Executive Director
1,889 -4.4%
3.77
US$7,129
1,889 -4.4% 3.77 US$7,129
2026-09-21 2026-06-05 PP Planned purchase

Senior VP, Finance and PAO

Officer
509 +36.0%
3.88
US$1,973
509 +36.0% 3.88 US$1,973
2026-09-21 2026-06-05 PP Planned purchase

President, CEO and CFO

Executive Director
637 +27.5%
3.88
US$2,469
637 +27.5% 3.88 US$2,469
2026-02-04 2025-12-05 PP Planned purchase

Senior VP, Finance and PAO

Officer
125 +9.7%
4.61
US$576
125 +9.7% 4.61 US$576
2026-02-04 2025-12-05 PP Planned purchase

President, CEO and CFO

Executive Director
125 +5.7%
4.61
US$576
125 +5.7% 4.61 US$576
2025-10-24 2025-06-06 PP Planned purchase

President, CEO and CFO

Executive Director
125 +6.1%
5.49
US$686
125 +6.1% 5.49 US$686
2025-10-24 2025-06-06 PP Planned purchase

Senior VP, Finance and PAO

Officer
125 +15.3%
5.49
US$686
125 +15.3% 5.49 US$686
2025-05-05 2024-12-16 PP Planned purchase

Senior VP, Finance and PAO

Officer
2,500 +17.7%
0.50
US$1,241
2,500 +17.7% 0.50 US$1,241
2025-05-05 2024-12-16 PP Planned purchase

President, CEO and CFO

Executive Director
2,500 +6.4%
0.50
US$1,241
2,500 +6.4% 0.50 US$1,241
2025-05-05 2024-06-06 PP Planned purchase

Senior VP, Finance and PAO

Officer
2,500 +22.0%
0.64
US$1,594
2,500 +22.0% 0.64 US$1,594
2025-05-05 2024-06-06 PP Planned purchase

President, CEO and CFO

Executive Director
2,500 +6.9%
0.64
US$1,594
2,500 +6.9% 0.64 US$1,594
2023-12-13 2023-12-12 B Purchase

Chief Financial Officer

Officer
7,500 +26.1%
0.95
US$7,125
7,500 +26.1% 0.95 US$7,125
2023-12-13 2023-12-06 PP Planned purchase

Chief Financial Officer

Officer
2,500 +9.5%
0.78
US$1,955
2,500 +9.5% 0.78 US$1,955
2023-12-01 2023-11-30 S Sale Non-Executive Director
14,934 -5.6%
0.86
US$12,815
14,934 -5.6% 0.86 US$12,815
2023-12-01 2023-11-30 S Sale Non-Executive Director
108,145 -5.6%
0.86
US$92,799
108,145 -5.6% 0.86 US$92,799
2023-12-01 2023-11-29 S Sale Non-Executive Director
3,131 -1.2%
0.91
US$2,837
3,131 -1.2% 0.91 US$2,837
2023-12-01 2023-11-29 S Sale Non-Executive Director
22,674 -1.2%
0.91
US$20,543
22,674 -1.2% 0.91 US$20,543
2023-11-22 2023-11-21 S Sale Large shareholder
1,457 -1.3%
0.90
US$1,311
1,457 -1.3% 0.90 US$1,311
2023-11-22 2023-11-21 S Sale Large shareholder
236 -0.1%
0.90
US$212
236 -0.1% 0.90 US$212
2023-11-22 2023-11-21 S Sale Large shareholder
1,707 -0.1%
0.90
US$1,536
1,707 -0.1% 0.90 US$1,536
2023-11-22 2023-11-21 S Sale Non-Executive Director
236 -0.1%
0.90
US$213
236 -0.1% 0.90 US$213
2023-11-22 2023-11-21 S Sale Non-Executive Director
1,707 -0.1%
0.90
US$1,539
1,707 -0.1% 0.90 US$1,539
2023-11-20 2023-11-20 S Sale Non-Executive Director
3,792 -1.4%
0.92
US$3,489
3,792 -1.4% 0.92 US$3,489
2023-11-20 2023-11-20 S Sale Non-Executive Director
27,465 -1.4%
0.92
US$25,268
27,465 -1.4% 0.92 US$25,268
2023-11-20 2023-11-20 S Sale Large shareholder
23,443 -17.2%
0.92
US$21,568
23,443 -17.2% 0.92 US$21,568
2023-11-20 2023-11-20 S Sale Large shareholder
3,792 -1.4%
0.92
US$3,489
3,792 -1.4% 0.92 US$3,489
2023-11-20 2023-11-20 S Sale Large shareholder
27,465 -1.4%
0.92
US$25,268
27,465 -1.4% 0.92 US$25,268
2023-11-20 2023-11-17 S Sale Non-Executive Director
1,134 -0.4%
0.93
US$1,055
1,134 -0.4% 0.93 US$1,055
2023-11-20 2023-11-17 S Sale Non-Executive Director
8,211 -0.4%
0.93
US$7,636
8,211 -0.4% 0.93 US$7,636
2023-11-20 2023-11-17 S Sale Large shareholder
7,009 -4.9%
0.93
US$6,518
7,009 -4.9% 0.93 US$6,518
2023-11-20 2023-11-17 S Sale Large shareholder
1,134 -0.4%
0.93
US$1,055
1,134 -0.4% 0.93 US$1,055
2023-11-20 2023-11-17 S Sale Large shareholder
8,211 -0.4%
0.93
US$7,636
8,211 -0.4% 0.93 US$7,636
2023-11-20 2023-11-16 S Sale Non-Executive Director
1,040 -0.4%
0.96
US$998
1,040 -0.4% 0.96 US$998
2023-11-20 2023-11-16 S Sale Non-Executive Director
7,531 -0.4%
0.96
US$7,230
7,531 -0.4% 0.96 US$7,230
2023-11-20 2023-11-16 S Sale Large shareholder
6,429 -4.3%
0.96
US$6,172
6,429 -4.3% 0.96 US$6,172
2023-11-20 2023-11-16 S Sale Large shareholder
1,040 -0.4%
0.96
US$998
1,040 -0.4% 0.96 US$998
2023-11-20 2023-11-16 S Sale Large shareholder
7,531 -0.4%
0.96
US$7,230
7,531 -0.4% 0.96 US$7,230
2023-12-13 2023-06-06 PP Planned purchase

Chief Financial Officer

Officer
1,829 +7.5%
1.18
US$2,161
1,829 +7.5% 1.18 US$2,161
2022-07-15 2022-07-13 S Sale Large shareholder
800,000 -17.8%
2.00
US$1,600,000
800,000 -17.8% 2.00 US$1,600,000
2021-12-09 2021-12-08 B Purchase

Chief Financial Officer

Officer
5,000 +33.0%
4.72
US$23,575
5,000 +33.0% 4.72 US$23,575
2022-02-01 2021-12-06 PP Planned purchase

Chief Medical Officer

Officer
411 +44.8%
4.64
US$1,907
411 +44.8% 4.64 US$1,907
2021-12-09 2021-12-06 PP Planned purchase

Chief Financial Officer

Officer
35 +0.2%
4.64
US$162
35 +0.2% 4.64 US$162
2022-02-01 2021-06-04 PP Planned purchase

Chief Medical Officer

Officer
917 New position
16.65
US$15,268
917 New position 16.65 US$15,268
2021-12-09 2021-06-04 PP Planned purchase

Chief Financial Officer

Officer
1,221 +8.8%
16.65
US$20,330
1,221 +8.8% 16.65 US$20,330
2021-02-11 2021-02-09 B Purchase Large shareholder
400,000 +9.7%
20.00
US$8,000,000
400,000 +9.7% 20.00 US$8,000,000
2021-02-09 2021-02-09 B Purchase Non-Executive Director Large shareholder
24,267 +9.6%
20.00
US$485,340
24,267 +9.6% 20.00 US$485,340
2021-02-09 2021-02-09 S Sale Non-Executive Director Large shareholder
20 -0.0%
20.00
US$400
20 -0.0% 20.00 US$400
2021-02-09 2021-02-09 B Purchase Non-Executive Director Large shareholder
175,733 +9.6%
20.00
US$3,514,660
175,733 +9.6% 20.00 US$3,514,660
2021-02-09 2021-02-09 S Sale Non-Executive Director Large shareholder
144 -0.0%
20.00
US$2,880
144 -0.0% 20.00 US$2,880
2021-02-09 2021-02-09 B Purchase Non-Executive Director
1,200 New position
20.00
US$24,000
1,200 New position 20.00 US$24,000
2021-02-09 2021-02-09 B Purchase Large shareholder
150,000 New position
20.00
US$3,000,000
150,000 New position 20.00 US$3,000,000
2021-02-09 2021-02-09 B Purchase Large shareholder
24,267 +9.6%
20.00
US$485,340
24,267 +9.6% 20.00 US$485,340
2021-02-09 2021-02-09 S Sale Large shareholder
20 -0.0%
20.00
US$400
20 -0.0% 20.00 US$400
2021-02-09 2021-02-09 B Purchase Large shareholder
175,733 +9.6%
20.00
US$3,514,660
175,733 +9.6% 20.00 US$3,514,660
2021-02-09 2021-02-09 S Sale Large shareholder
144 -0.0%
20.00
US$2,880
144 -0.0% 20.00 US$2,880
2021-02-09 2021-02-09 S Sale Large shareholder
62 -0.0%
20.00
US$1,240
62 -0.0% 20.00 US$1,240
2021-02-09 2021-02-09 B Purchase Non-Executive Director
450,000 +19.5%
20.00
US$9,000,000
450,000 +19.5% 20.00 US$9,000,000
2021-02-09 2021-02-09 S Sale Non-Executive Director
62 -0.0%
20.00
US$1,240
62 -0.0% 20.00 US$1,240
2021-02-09 2021-02-09 B Purchase Large shareholder
450,000 +19.5%
20.00
US$9,000,000
450,000 +19.5% 20.00 US$9,000,000
2021-02-09 2021-02-09 B Purchase Non-Executive Director
1,200 New position
20.00
US$24,000
1,200 New position 20.00 US$24,000
2021-02-09 2021-02-09 B Purchase

Chief Financial Officer

Officer
1,200 +9.5%
20.00
US$24,000
1,200 +9.5% 20.00 US$24,000
2021-02-09 2021-02-09 B Purchase

Chief Executive Officer

Executive Director
1,500 New position
20.00
US$30,000
1,500 New position 20.00 US$30,000
2021-02-09 2021-02-09 B Purchase Non-Executive Director
1,000 New position
20.00
US$20,000
1,000 New position 20.00 US$20,000