IGM Biosciences, Inc. - Common Stock, par value $0.01 per share (IGMS) Institutional Ownership

13F Institutional Holders and Ownership History from Q3 2019 to Q3 2025

Type / Class
Equity / Common Stock, par value $0.01 per share
Symbol
IGMS
Underlying class
Common Stock
Shares outstanding
34,723,329
Price per share
$1.27
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
400
Total reported value
$508
Share change
-15,957,295
Value change
-$17,871,868
Number of holders
1
Price from insider filings
$1.27
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of IGM Biosciences, Inc. - Common Stock, par value $0.01 per share (IGMS) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
PRICE T ROWE ASSOCIATES INC /MD/ 0.2% -94% $79,128 -$4,203,671 65,940 -98% T. Rowe Price Associates, Inc. 31 Jan 2025

As of 30 Sep 2025, 1 institutional investors reported holding 400 shares of IGM Biosciences, Inc. - Common Stock, par value $0.01 per share (IGMS). This represents 0% of the company’s total 34,723,329 outstanding shares.

Institutional Holders of IGM Biosciences, Inc. - Common Stock, par value $0.01 per share (IGMS) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q3 400 $508 -$17,871,868 $1.27 1
2025 Q2 15,960,828 $17,875,835 -$2,104,201 $1.12 66
2025 Q1 17,818,423 $20,489,841 -$7,726,102 $1.15 78
2024 Q4 21,665,346 $132,375,397 -$11,575,882 $6.11 80
2024 Q3 21,552,420 $356,554,991 -$28,738,996 $16.54 72
2024 Q2 22,262,648 $152,946,169 -$7,201,124 $6.87 82
2024 Q1 22,451,623 $216,658,469 +$8,694,626 $9.65 67
2023 Q4 21,875,843 $181,788,738 -$5,233,058 $8.31 70
2023 Q3 22,309,395 $186,282,610 +$4,170,162 $8.35 76
2023 Q2 21,766,620 $200,903,618 +$35,209,839 $9.23 75
2023 Q1 17,746,654 $243,635,299 -$3,025,252 $13.74 71
2022 Q4 17,970,063 $305,635,577 +$820,913 $17.01 76
2022 Q3 16,840,830 $382,706,815 -$8,175,678 $22.74 84
2022 Q2 17,495,659 $315,458,489 -$21,884,151 $18.03 87
2022 Q1 17,420,376 $465,615,522 +$11,163,137 $26.73 88
2021 Q4 16,902,926 $495,757,399 +$6,401,077 $29.33 79
2021 Q3 16,889,120 $1,110,632,705 +$20,009,554 $65.76 103
2021 Q2 16,328,758 $1,357,993,485 -$126,262,925 $83.20 102
2021 Q1 17,986,386 $1,380,234,693 +$66,574,074 $76.69 108
2020 Q4 15,954,413 $1,408,600,264 +$177,474,623 $88.29 106
2020 Q3 14,532,856 $1,072,684,675 +$48,365,373 $73.81 89
2020 Q2 13,878,230 $1,013,074,077 +$45,598,473 $73.00 78
2020 Q1 13,268,896 $741,900,915 +$66,543,311 $56.15 60
2019 Q4 12,196,527 $463,251,136 +$92,385,423 $38.16 50
2019 Q3 10,035,118 $178,125,000 +$178,125,044 $17.75 33