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
-$17,871,878
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% $86,381 -$4,589,007 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 -$17,871,878 $1.27 1
2025 Q2 15,960,828 $17,875,835 -$2,104,203 $1.12 66
2025 Q1 17,818,423 $20,490,330 -$7,787,129 $1.15 78
2024 Q4 21,675,386 $132,436,529 -$11,514,545 $6.11 81
2024 Q3 21,552,420 $356,554,699 -$28,739,002 $16.54 71
2024 Q2 22,262,648 $152,945,906 -$7,041,309 $6.87 81
2024 Q1 22,815,461 $220,169,478 +$9,914,449 $9.65 85
2023 Q4 21,900,333 $181,991,703 -$4,914,007 $8.31 71
2023 Q3 22,316,660 $186,343,110 +$4,167,543 $8.35 78
2023 Q2 21,774,197 $200,973,364 +$34,080,625 $9.23 77
2023 Q1 17,755,754 $243,788,540 -$3,024,155 $13.74 72
2022 Q4 17,975,744 $305,732,057 +$887,493 $17.01 77
2022 Q3 17,687,605 $401,962,815 -$8,390,420 $22.74 89
2022 Q2 17,501,111 $315,557,489 -$24,172,148 $18.03 88
2022 Q1 18,211,636 $486,765,522 +$12,666,928 $26.73 89
2021 Q4 17,637,328 $517,295,289 +$7,327,988 $29.33 83
2021 Q3 16,900,148 $1,111,361,370 +$22,065,266 $65.76 106
2021 Q2 16,339,254 $1,358,868,495 -$129,503,572 $83.20 104
2021 Q1 17,999,061 $1,381,196,583 +$59,991,954 $76.69 108
2020 Q4 17,177,904 $1,516,624,749 +$223,584,985 $88.29 105
2020 Q3 14,663,143 $1,082,301,675 +$47,917,604 $73.81 90
2020 Q2 14,016,977 $1,023,203,077 +$55,812,836 $73.00 80
2020 Q1 13,271,249 $742,032,915 +$66,544,263 $56.15 61
2019 Q4 12,196,527 $463,251,136 +$92,385,435 $38.16 50
2019 Q3 10,035,118 $178,125,000 +$178,125,000 $17.75 33