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IGM Biosciences Inc (IGMS)

The most recent insider trading activity occurred on July 23, 2025. Key executives, including the CEO, CFO, and Chief Business Officer, made significant sell transactions. These sales represent a notable pattern of insider divestment in the recent period.
Stock chart
Ticker: IGMS Exchange: NSM


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Purchase Sale Planned purchase Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Harler Mary Beth
Chief Executive Officer
1 sale — total 18,457 USD
Sale 23 Jul 2025
Value US$1,175,586.28 | Price 111.96 | Shares 59,569
Sale 23 Jul 2025
Value US$1,662,561.21 | Price 40.75 | Shares 46,244
Sale 23 Jul 2025
Value US$11,125.54 | Price 1.27 | Shares 8,741
Sale 16 Jun 2025
Value US$1,825.18 | Price 1.20 | Shares 1,522
Sale 16 Jun 2025
Value US$1,825.18 | Price 1.20 | Shares 1,522
Sale 16 Jun 2025
Value US$582.81 | Price 1.20 | Shares 486
Sale 16 Jun 2025
Value US$1,140.44 | Price 1.20 | Shares 951
Sale 14 May 2025
Value US$2,089.92 | Price 1.12 | Shares 1,865
Sale 14 Mar 2025
Value US$2,092.23 | Price 1.23 | Shares 1,701
Sale 14 Mar 2025
Value US$9,014.67 | Price 1.23 | Shares 7,329
Sale 14 Mar 2025
Value US$9,014.67 | Price 1.23 | Shares 7,329
Sale 14 Mar 2025
Value US$5,549.76 | Price 1.23 | Shares 4,512
Proposed sale 14 Mar 2025
Value US$10,654.11 | Price 1.29 | Shares 8,259
Proposed sale 14 Mar 2025
Value US$10,654.11 | Price 1.29 | Shares 8,259
Proposed sale 14 Mar 2025
Value US$6,551.91 | Price 1.29 | Shares 5,079
Sale 15 Jan 2025
Value US$1,907.29 | Price 1.70 | Shares 1,122
Sale 16 Dec 2024
Value US$12,775.84 | Price 7.48 | Shares 1,708
Sale 16 Dec 2024
Value US$7,951.24 | Price 7.48 | Shares 1,063
Sale 16 Dec 2024
Value US$4,031.72 | Price 7.48 | Shares 539
Sale 16 Dec 2024
Value US$12,775.84 | Price 7.48 | Shares 1,708
Proposed sale 16 Dec 2024
Value US$231,232.50 | Price 7.17 | Shares 32,250
Proposed sale 16 Dec 2024
Value US$134,523.54 | Price 7.17 | Shares 18,762
Sale 13 Sep 2024
Value US$5,411.70 | Price 11.54 | Shares 469
Sale 13 Sep 2024
Value US$17,158.20 | Price 11.54 | Shares 1,487
Sale 13 Sep 2024
Value US$10,673.39 | Price 11.54 | Shares 925
Sale 13 Sep 2024
Value US$17,158.20 | Price 11.54 | Shares 1,487
Sale 13 Sep 2024
Value US$17,158.20 | Price 11.54 | Shares 1,487
Sale 13 Sep 2024
Value US$45,532.10 | Price 11.54 | Shares 3,946
Sale 13 Sep 2024
Value US$17,158.20 | Price 11.54 | Shares 1,487
Planned sale 25 Jul 2024
Value US$211,848.00 | Price 14.00 | Shares 15,132
Proposed sale 25 Jul 2024
Value US$211,078.51 | Price 13.95 | Shares 15,132
Sale 14 Jun 2024
Value US$3,749.77 | Price 7.58 | Shares 495
Sale 14 Jun 2024
Value US$31,543.55 | Price 7.58 | Shares 4,164
Sale 14 Jun 2024
Value US$11,893.22 | Price 7.58 | Shares 1,570
Sale 14 Jun 2024
Value US$8,378.28 | Price 7.58 | Shares 1,106
Sale 14 Jun 2024
Value US$11,893.22 | Price 7.58 | Shares 1,570
Sale 14 Jun 2024
Value US$7,401.07 | Price 7.58 | Shares 977
Sale 14 Jun 2024
Value US$11,893.22 | Price 7.58 | Shares 1,570
Buy 28 Mar 2024
Value US$860,041.70 | Price 9.62 | Shares 89,407
Buy 28 Mar 2024
Value US$77,590.08 | Price 9.62 | Shares 8,066
Buy 27 Mar 2024
Value US$78,206.74 | Price 9.27 | Shares 8,439
Buy 27 Mar 2024
Value US$7,052.42 | Price 9.27 | Shares 761
Buy 27 Mar 2024
Value US$157,683.19 | Price 9.22 | Shares 17,101
Buy 27 Mar 2024
Value US$14,227.54 | Price 9.22 | Shares 1,543
Buy 26 Mar 2024
Value US$2,046,158.64 | Price 8.26 | Shares 247,656
Buy 26 Mar 2024
Value US$184,608.36 | Price 8.26 | Shares 22,344
Sale 14 Mar 2024
Value US$18,754.40 | Price 10.17 | Shares 1,844
Sale 14 Mar 2024
Value US$4,719.11 | Price 10.17 | Shares 464
Sale 14 Mar 2024
Value US$16,049.05 | Price 10.17 | Shares 1,578
Sale 14 Mar 2024
Value US$25,782.22 | Price 10.17 | Shares 2,535
Sale 14 Mar 2024
Value US$25,863.58 | Price 10.17 | Shares 2,543
Sale 14 Mar 2024
Value US$42,533.03 | Price 10.17 | Shares 4,182
Sale 13 Mar 2024
Value US$20,747.80 | Price 9.88 | Shares 2,101
Sale 13 Mar 2024
Value US$5,223.98 | Price 9.88 | Shares 529
Sale 13 Mar 2024
Value US$17,755.61 | Price 9.88 | Shares 1,798
Sale 13 Mar 2024
Value US$28,529.45 | Price 9.88 | Shares 2,889
Sale 13 Mar 2024
Value US$28,608.45 | Price 9.88 | Shares 2,897
Sale 13 Mar 2024
Value US$47,055.33 | Price 9.88 | Shares 4,765
Proposed sale 13 Mar 2024
Value US$65,789.40 | Price 9.95 | Shares 6,612
Proposed sale 13 Mar 2024
Value US$65,789.40 | Price 9.95 | Shares 6,612
Proposed sale 13 Mar 2024
Value US$114,604.10 | Price 9.95 | Shares 11,518
Buy 15 Dec 2023
Value US$1,412,565.00 | Price 6.60 | Shares 214,025
Buy 15 Dec 2023
Value US$112,635.60 | Price 6.60 | Shares 17,066
Buy 15 Dec 2023
Value US$334,398.50 | Price 6.37 | Shares 52,528
Buy 15 Dec 2023
Value US$26,661.23 | Price 6.37 | Shares 4,188
Buy 15 Dec 2023
Value US$1,175.68 | Price 6.36 | Shares 185
Buy 15 Dec 2023
Value US$95.32 | Price 6.36 | Shares 15
Buy 14 Dec 2023
Value US$947,601.70 | Price 6.50 | Shares 145,749
Buy 14 Dec 2023
Value US$75,555.09 | Price 6.50 | Shares 11,621
Buy 13 Dec 2023
Value US$426,751.37 | Price 5.99 | Shares 71,219
Buy 13 Dec 2023
Value US$34,029.14 | Price 5.99 | Shares 5,679
Buy 13 Dec 2023
Value US$55,566.66 | Price 5.76 | Shares 9,649
Buy 13 Dec 2023
Value US$4,428.52 | Price 5.76 | Shares 769
Sale 13 Dec 2023
Value US$25,244.96 | Price 5.78 | Shares 4,369
Sale 13 Dec 2023
Value US$101,557.64 | Price 5.78 | Shares 17,576
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
2025-07-25 2025-07-23 S Sale

Chief Executive Officer

Executive Director
59,569 -27.3%
111.96
US$1,175,586
59,569 -27.3% 111.96 US$1,175,586
2025-07-25 2025-07-23 S Sale

CHIEF BUSINESS OFFICER

Officer
46,244 +9.4%
40.75
US$1,662,561
46,244 +9.4% 40.75 US$1,662,561
2025-07-25 2025-07-23 S Sale

CHIEF FINANCIAL OFFICER

Officer
31,638 -28.1%
295.51
US$25,068
31,638 -28.1% 295.51 US$25,068
2025-06-20 2025-06-16 S Sale

Chief Executive Officer

Executive Director
1,522 -0.4%
1.20
US$1,825
1,522 -0.4% 1.20 US$1,825
2025-06-20 2025-06-16 S Sale

CHIEF FINANCIAL OFFICER

Officer
1,522 -0.8%
1.20
US$1,825
1,522 -0.8% 1.20 US$1,825
2025-06-20 2025-06-16 S Sale

PRINCIPAL ACCOUNTING OFFICER

Officer
486 -1.8%
1.20
US$583
486 -1.8% 1.20 US$583
2025-06-20 2025-06-16 S Sale

CHIEF BUSINESS OFFICER

Officer
951 -1.3%
1.20
US$1,140
951 -1.3% 1.20 US$1,140
2025-05-16 2025-05-14 S Sale

PRINCIPAL ACCOUNTING OFFICER

Officer
1,865 -6.5%
1.12
US$2,090
1,865 -6.5% 1.12 US$2,090
2025-03-18 2025-03-14 S Sale

PRINCIPAL ACCOUNTING OFFICER

Officer
1,701 -5.6%
1.23
US$2,092
1,701 -5.6% 1.23 US$2,092
2025-03-18 2025-03-14 S Sale

CHIEF FINANCIAL OFFICER

Officer
7,329 -3.9%
1.23
US$9,015
7,329 -3.9% 1.23 US$9,015
2025-03-18 2025-03-14 S Sale

Chief Executive Officer

Executive Director
7,329 -2.1%
1.23
US$9,015
7,329 -2.1% 1.23 US$9,015
2025-03-18 2025-03-14 S Sale

CHIEF BUSINESS OFFICER

Officer
4,512 -5.8%
1.23
US$5,550
4,512 -5.8% 1.23 US$5,550
2025-03-14 2025-03-14 PrS Proposed sale

Officer

Officer
8,259
1.29
US$10,654
8,259 1.29 US$10,654
2025-03-14 2025-03-14 PrS Proposed sale

Officer

Officer
8,259
1.29
US$10,654
8,259 1.29 US$10,654
2025-03-14 2025-03-14 PrS Proposed sale

Officer

Officer
5,079
1.29
US$6,552
5,079 1.29 US$6,552
2025-01-17 2025-01-15 S Sale

PRINCIPAL ACCOUNTING OFFICER

Officer
1,122 -3.5%
1.70
US$1,907
1,122 -3.5% 1.70 US$1,907
2024-12-18 2024-12-16 S Sale

Chief Executive Officer

Executive Director
1,708 -0.5%
7.48
US$12,776
1,708 -0.5% 7.48 US$12,776
2024-12-18 2024-12-16 S Sale

CHIEF BUSINESS OFFICER

Officer
1,063 -1.3%
7.48
US$7,951
1,063 -1.3% 7.48 US$7,951
2024-12-18 2024-12-16 S Sale

PRINCIPAL ACCOUNTING OFFICER

Officer
539 -1.7%
7.48
US$4,032
539 -1.7% 7.48 US$4,032
2024-12-18 2024-12-16 S Sale

CHIEF FINANCIAL OFFICER

Officer
1,708 -0.9%
7.48
US$12,776
1,708 -0.9% 7.48 US$12,776
2024-12-16 2024-12-16 PrS Proposed sale

Former Officer and Director

Executive Director
32,250
7.17
US$231,232
32,250 7.17 US$231,232
2024-12-16 2024-12-16 PrS Proposed sale

Former Officer

Officer
18,762
7.17
US$134,524
18,762 7.17 US$134,524
2024-09-17 2024-09-13 S Sale

PRINCIPAL ACCOUNTING OFFICER

Officer
469 -1.8%
11.54
US$5,412
469 -1.8% 11.54 US$5,412
2024-09-17 2024-09-13 S Sale

CHIEF MEDICAL OFFICER

Officer
1,487 -1.0%
11.54
US$17,158
1,487 -1.0% 11.54 US$17,158
2024-09-17 2024-09-13 S Sale

CHIEF BUSINESS OFFICER

Officer
925 -1.2%
11.54
US$10,673
925 -1.2% 11.54 US$10,673
2024-09-17 2024-09-13 S Sale

CHIEF SCIENTIFIC OFFICER

Officer
1,487 -0.6%
11.54
US$17,158
1,487 -0.6% 11.54 US$17,158
2024-09-17 2024-09-13 S Sale

CHIEF FINANCIAL OFFICER

Officer
1,487 -1.2%
11.54
US$17,158
1,487 -1.2% 11.54 US$17,158
2024-09-17 2024-09-13 S Sale

CEO AND PRESIDENT

Executive Director
3,946 -1.6%
11.54
US$45,532
3,946 -1.6% 11.54 US$45,532
2024-09-17 2024-09-13 S Sale

Head, Research & Autoimmunity

Officer
1,487 -0.9%
11.54
US$17,158
1,487 -0.9% 11.54 US$17,158
2024-07-29 2024-07-25 PlS Planned sale Non-Executive Director
15,132 -88.3%
14.00
US$211,848
15,132 -88.3% 14.00 US$211,848
2024-07-25 2024-07-25 PrS Proposed sale

Director

Non-Executive Director
15,132
13.95
US$211,079
15,132 13.95 US$211,079
2024-06-18 2024-06-14 S Sale

PRINCIPAL ACCOUNTING OFFICER

Officer
495 -1.9%
7.58
US$3,750
495 -1.9% 7.58 US$3,750
2024-06-18 2024-06-14 S Sale

CEO AND PRESIDENT

Executive Director
4,164 -1.6%
7.58
US$31,544
4,164 -1.6% 7.58 US$31,544
2024-06-18 2024-06-14 S Sale

CHIEF MEDICAL OFFICER

Officer
1,570 -1.6%
7.58
US$11,893
1,570 -1.6% 7.58 US$11,893
2024-06-18 2024-06-14 S Sale

CHIEF SCIENTIFIC OFFICER

Officer
1,106 -0.6%
7.58
US$8,378
1,106 -0.6% 7.58 US$8,378
2024-06-18 2024-06-14 S Sale

Head, Research & Autoimmunity

Officer
1,570 -1.8%
7.58
US$11,893
1,570 -1.8% 7.58 US$11,893
2024-06-18 2024-06-14 S Sale

CHIEF BUSINESS OFFICER

Officer
977 -1.6%
7.58
US$7,401
977 -1.6% 7.58 US$7,401
2024-06-18 2024-06-14 S Sale

CHIEF FINANCIAL OFFICER

Officer
1,570 -1.7%
7.58
US$11,893
1,570 -1.7% 7.58 US$11,893
2024-03-28 2024-03-28 B Purchase Non-Executive Director Large shareholder
89,407 +2.4%
9.62
US$860,042
89,407 +2.4% 9.62 US$860,042
2024-03-28 2024-03-28 B Purchase Non-Executive Director Large shareholder
8,066 +2.4%
9.62
US$77,590
8,066 +2.4% 9.62 US$77,590
2024-03-28 2024-03-27 B Purchase Non-Executive Director Large shareholder
8,439 +0.2%
9.27
US$78,207
8,439 +0.2% 9.27 US$78,207
2024-03-28 2024-03-27 B Purchase Non-Executive Director Large shareholder
761 +0.2%
9.27
US$7,052
761 +0.2% 9.27 US$7,052
2024-03-28 2024-03-27 B Purchase Non-Executive Director Large shareholder
17,101 +0.5%
9.22
US$157,683
17,101 +0.5% 9.22 US$157,683
2024-03-28 2024-03-27 B Purchase Non-Executive Director Large shareholder
1,543 +0.5%
9.22
US$14,228
1,543 +0.5% 9.22 US$14,228
2024-03-28 2024-03-26 B Purchase Non-Executive Director Large shareholder
247,656 +7.3%
8.26
US$2,046,159
247,656 +7.3% 8.26 US$2,046,159
2024-03-28 2024-03-26 B Purchase Non-Executive Director Large shareholder
22,344 +7.1%
8.26
US$184,608
22,344 +7.1% 8.26 US$184,608
2024-03-15 2024-03-14 S Sale

CHIEF SCIENTIFIC OFFICER

Officer
1,844 -1.1%
10.17
US$18,754
1,844 -1.1% 10.17 US$18,754
2024-03-15 2024-03-14 S Sale

PRINCIPAL ACCOUNTING OFFICER

Officer
464 -1.7%
10.17
US$4,719
464 -1.7% 10.17 US$4,719
2024-03-15 2024-03-14 S Sale

CHIEF BUSINESS OFFICER

Officer
1,578 -2.5%
10.17
US$16,049
1,578 -2.5% 10.17 US$16,049
2024-03-15 2024-03-14 S Sale

CHIEF MEDICAL OFFICER

Officer
2,535 -2.6%
10.17
US$25,782
2,535 -2.6% 10.17 US$25,782
2024-03-15 2024-03-14 S Sale

CHIEF FINANCIAL OFFICER

Officer
2,543 -2.7%
10.17
US$25,864
2,543 -2.7% 10.17 US$25,864
2024-03-15 2024-03-14 S Sale

CEO AND PRESIDENT

Executive Director
4,182 -1.9%
10.17
US$42,533
4,182 -1.9% 10.17 US$42,533
2024-03-15 2024-03-13 S Sale

CHIEF SCIENTIFIC OFFICER

Officer
2,101 -1.2%
9.88
US$20,748
2,101 -1.2% 9.88 US$20,748
2024-03-15 2024-03-13 S Sale

PRINCIPAL ACCOUNTING OFFICER

Officer
529 -1.9%
9.88
US$5,224
529 -1.9% 9.88 US$5,224
2024-03-15 2024-03-13 S Sale

CHIEF BUSINESS OFFICER

Officer
1,798 -2.8%
9.88
US$17,756
1,798 -2.8% 9.88 US$17,756
2024-03-15 2024-03-13 S Sale

CHIEF MEDICAL OFFICER

Officer
2,889 -2.9%
9.88
US$28,529
2,889 -2.9% 9.88 US$28,529
2024-03-15 2024-03-13 S Sale

CHIEF FINANCIAL OFFICER

Officer
2,897 -3.0%
9.88
US$28,608
2,897 -3.0% 9.88 US$28,608
2024-03-15 2024-03-13 S Sale

CEO AND PRESIDENT

Executive Director
4,765 -2.1%
9.88
US$47,055
4,765 -2.1% 9.88 US$47,055
2024-03-13 2024-03-13 PrS Proposed sale

Officer

Officer
6,612
9.95
US$65,789
6,612 9.95 US$65,789
2024-03-13 2024-03-13 PrS Proposed sale

Officer

Officer
6,612
9.95
US$65,789
6,612 9.95 US$65,789
2024-03-13 2024-03-13 PrS Proposed sale

Officer; Director

Executive Director
11,518
9.95
US$114,604
11,518 9.95 US$114,604
2023-12-15 2023-12-15 B Purchase Non-Executive Director Large shareholder
214,025 +6.7%
6.60
US$1,412,565
214,025 +6.7% 6.60 US$1,412,565
2023-12-15 2023-12-15 B Purchase Non-Executive Director Large shareholder
17,066 +5.7%
6.60
US$112,636
17,066 +5.7% 6.60 US$112,636
2023-12-15 2023-12-15 B Purchase Non-Executive Director Large shareholder
52,528 +1.7%
6.37
US$334,399
52,528 +1.7% 6.37 US$334,399
2023-12-15 2023-12-15 B Purchase Non-Executive Director Large shareholder
4,188 +1.4%
6.37
US$26,661
4,188 +1.4% 6.37 US$26,661
2023-12-15 2023-12-15 B Purchase Non-Executive Director Large shareholder
185 +0.0%
6.36
US$1,176
185 +0.0% 6.36 US$1,176
2023-12-15 2023-12-15 B Purchase Non-Executive Director Large shareholder
15 +0.0%
6.36
US$95
15 +0.0% 6.36 US$95
2023-12-15 2023-12-14 B Purchase Non-Executive Director Large shareholder
145,749 +4.9%
6.50
US$947,602
145,749 +4.9% 6.50 US$947,602
2023-12-15 2023-12-14 B Purchase Non-Executive Director Large shareholder
11,621 +4.1%
6.50
US$75,555
11,621 +4.1% 6.50 US$75,555
2023-12-15 2023-12-13 B Purchase Non-Executive Director Large shareholder
71,219 +2.5%
5.99
US$426,751
71,219 +2.5% 5.99 US$426,751
2023-12-15 2023-12-13 B Purchase Non-Executive Director Large shareholder
5,679 +2.1%
5.99
US$34,029
5,679 +2.1% 5.99 US$34,029
2023-12-15 2023-12-13 B Purchase Non-Executive Director Large shareholder
9,649 +0.3%
5.76
US$55,567
9,649 +0.3% 5.76 US$55,567
2023-12-15 2023-12-13 B Purchase Non-Executive Director Large shareholder
769 +0.3%
5.76
US$4,429
769 +0.3% 5.76 US$4,429
2023-12-15 2023-12-13 S Sale

Chief Business Officer

Officer
4,369 -10.9%
5.78
US$25,245
4,369 -10.9% 5.78 US$25,245
2023-12-15 2023-12-13 S Sale

CEO and President

Executive Director
17,576 -14.6%
5.78
US$101,558
17,576 -14.6% 5.78 US$101,558