IGMS

IGM Biosciences, Inc.

Total Trades

100

Buys

13

Sells

64

Largest Trade

N/A

Insiders

14

Institutional Funds

20

Inst. Value

$1M+

Activist Filings

26

Insider Trades

InsiderTitleTypeValueSharesPriceDate
Gauthier GeorgeChief Commercial O…SELL$15K–$50K1K$12.31May 25, 2023
Decker Lisa LynnChief Business Off…SELL$15K–$50K1K$12.31May 25, 2023
Decker Lisa LynnChief Business Off…GRANT$1K–$15K961$11.71May 25, 2023
Gauthier GeorgeChief Commercial O…SELL$1K–$15K935$12.60Apr 7, 2023
Gauthier GeorgeChief Commercial O…GRANTN/A16KApr 7, 2023
Takimoto Chris HChief Medical Offi…SELL$15K–$50K2K$18.73Mar 16, 2023
Tahir MisbahCFOSELL$15K–$50K2K$18.73Mar 16, 2023
Keyt BruceChief Scientific O…SELL$15K–$50K1K$18.73Mar 16, 2023
Gauthier GeorgeChief Commercial O…SELL$15K–$50K1K$18.73Mar 16, 2023
Decker Lisa LynnChief Business Off…SELL$15K–$50K1K$18.73Mar 16, 2023
Takimoto Chris HChief Medical Offi…SELL$100K–$500K5K$18.98Dec 21, 2022
Tahir MisbahCFOSELL$100K–$500K6K$19.62Dec 21, 2022
Schwarzer FredCEO and PresidentSELL$100K–$500K12K$18.98Dec 21, 2022
Keyt BruceChief Scientific O…SELL$100K–$500K5K$18.98Dec 21, 2022
Gauthier GeorgeChief Commercial O…SELL$50K–$100K4K$18.98Dec 21, 2022
Decker Lisa LynnChief Business Off…SELL$15K–$50K2K$18.98Dec 21, 2022
Takimoto Chris HChief Medical Offi…SELL$15K–$50K877$21.57Nov 29, 2022
Tahir MisbahCFOSELL$15K–$50K877$21.57Nov 29, 2022
Tahir MisbahCFOGRANT$1K–$15K353$12.84Nov 29, 2022
Schwarzer FredCEO and PresidentSELL$15K–$50K1K$21.57Nov 29, 2022
Keyt BruceChief Scientific O…SELL$15K–$50K877$21.57Nov 29, 2022
Gauthier GeorgeChief Commercial O…SELL$15K–$50K1K$21.57Nov 29, 2022
Decker Lisa LynnChief Business Off…SELL$15K–$50K1K$21.57Nov 29, 2022
BEHRENS M KATHLEENDirectorBUY$1M+60K$17.14Nov 10, 2022
Keyt BruceChief Scientific O…EXERCISE$15K–$50K25K$0.93Oct 6, 2022
Keyt BruceChief Scientific O…SELL$500K+25K$22.84Oct 6, 2022
LOBERG MICHAEL DDirectorGRANTN/A533Oct 4, 2022
LOBERG MICHAEL DDirectorBUY$100K–$500K6K$19.62Oct 4, 2022
LOBERG MICHAEL DDirectorBUY$100K–$500K7K$20.89Sep 29, 2022
Keyt BruceChief Scientific O…SELL$100K–$500K25K$19.34Sep 8, 2022
Keyt BruceChief Scientific O…EXERCISE$15K–$50K25K$0.93Sep 8, 2022
Keyt BruceChief Scientific O…SELL$500K+25K$22.17Aug 22, 2022
Keyt BruceChief Scientific O…EXERCISE$15K–$50K25K$0.93Aug 22, 2022
Takimoto Chris HChief Medical Offi…SELL$15K–$50K938$17.10May 26, 2022
Tahir MisbahCFOSELL$15K–$50K950$17.10May 26, 2022
Schwarzer FredCEO and PresidentSELL$15K–$50K1K$17.10May 26, 2022
Keyt BruceChief Scientific O…SELL$15K–$50K939$17.10May 26, 2022
Gauthier GeorgeChief Commercial O…SELL$15K–$50K1K$17.10May 26, 2022
Decker Lisa LynnChief Business Off…SELL$15K–$50K1K$17.10May 26, 2022
Topsoe Jakob HaldorDirectorBUY$15K–$50K1K$16.00May 24, 2022
Topsoe Jakob HaldorDirectorBUY$100K–$500K16K$14.51May 16, 2022
Topsoe Christina TengDirectorBUY$50K–$100K7K$14.68May 16, 2022
Keyt BruceChief Scientific O…SELL$50K–$100K3K$25.00Apr 8, 2022
Keyt BruceChief Scientific O…EXERCISE$1K–$15K3K$0.93Apr 8, 2022
LOBERG MICHAEL DDirectorBUY$100K–$500K22K$23.00Apr 5, 2022
LOBERG MICHAEL DDirectorGRANTN/A533Apr 5, 2022
BEHRENS M KATHLEENDirectorGRANTN/A374Apr 5, 2022
BEHRENS M KATHLEENDirectorBUY$1M+61K$23.00Apr 5, 2022
Keyt BruceChief Scientific O…SELL$100K–$500K8K$28.50Apr 2, 2022
Keyt BruceChief Scientific O…EXERCISE$1K–$15K8K$0.93Apr 2, 2022
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Institutional Ownership

13F filings as of Jun 30, 2025 · 20 funds holding

Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

Glazer Capital, LLC

SC 13G/A · Nov 13, 2025

0.0%

0 shares

Baker Bros. Advisors LP

SC 13D/A · Aug 18, 2025

0.0%

0 shares

Topsoe Holding A/S

SC 13D/A · Aug 18, 2025

0.0%

0 shares

Redmile Group, LLC

SC 13D/A · Aug 15, 2025

0.0%

0 shares

Glazer Capital, LLC

SC 13G · Jul 9, 2025

7.3%

2.5M shares

T. Rowe Price Associates, Inc.

SC 13G/A · Feb 14, 2025

10.5%

3.6M shares

T. Rowe Price Associates, Inc.

SC 13G/A · Feb 7, 2025

0.2%

66K shares

11.8%

4.0M shares

FMR LLC

SC 13G/A · Nov 12, 2024

2.4%

820K shares

Invus Public Equities, L.P.

SC 13G/A · Aug 2, 2024

9.9%

3.3M shares

Baker Bros. Advisors LP

SC 13D/A · Mar 28, 2024

12.4%

4.1M shares

10.3%

3.4M shares

9.9%

3.3M shares

Invus Public Equities, L.P. 2

SC 13G/A · Feb 9, 2024

9.4%

310.0M shares

Baker Bros. Advisors LP

SC 13D/A · Dec 15, 2023

11.4%

3.7M shares

Topsøe Holding A/S

SC 13D/A · Jul 19, 2023

31.8%

10.4M shares

Redmile Group, LLC

SC 13D/A · Jun 28, 2023

9.9%

3.3M shares

Baker Bros. Advisors LP

SC 13D/A · Jun 28, 2023

10.0%

3.3M shares

Redmile Group, LLC

SC 13D/A · Jun 13, 2023

10.3%

3.0M shares

7.6%

2.2M shares

Invus Public Equities, L.P.

SC 13G/A · Feb 11, 2023

8.4%

2.5M shares

Redmile Group, LLC

SC 13D/A · Oct 5, 2022

11.6%

3.4M shares

Baker Bros. Advisors LP

SC 13D/A · Apr 5, 2022

11.6%

3.2M shares

Redmile Group, LLC

SC 13D/A · Apr 5, 2022

12.9%

3.4M shares

9.1%

2.4M shares

Invus Public Equities, L.P.

SC 13G/A · Feb 11, 2022

5.8%

1.5M shares