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IGM Biosciences, Inc.

IGMSDelisted Aug 14, 2025
Industry
Pharmaceutical Preparations
SEC CIK
0001496323

IGM Biosciences, Inc. was delisted on Aug 14, 2025; its insiders filed their last Form 4 on Aug 18, 2025; 66 institutions reported holding it in 13F filings for Q2 2025, worth $17.9M in total; no superinvestor held it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by IGM Biosciences, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
0 filings
Insiders trading
0
Net value
$0
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for IGM Biosciences, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for IGM Biosciences, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Baker JulianOther: Former 10% owner and director0IndirectAug 18, 20250
Baker FelixOther: Former 10% owner and director0IndirectAug 18, 20250
Baker Bros. Advisors LPOther: Former 10% owner and director0IndirectAug 18, 20250
Baker Brothers Life Sciences LPOther: Former 10% owner and director0IndirectAug 18, 20250
667, L.P.Other: Former 10% owner and director0IndirectAug 18, 20250
Baker Bros. Advisors (GP) LLCOther: Former 10% owner and director0IndirectAug 18, 20250
Redmile Group, LLCDirector, 10% Owner0IndirectAug 15, 20250
Green Jeremy10% Owner0IndirectAug 15, 20250
Behrens M KathleenDirector0IndirectAug 14, 20250
Hambleton JulieDirector0Aug 14, 20250
Lee Michael StewartDirector0Aug 14, 20250
Topsoe Jakob HaldorDirector, 10% Owner0IndirectAug 14, 20250
Strohl WilliamDirector0Aug 14, 20250
Topsoe Christina TengDirector, 10% Owner0IndirectAug 14, 20250
Topsoe Holding A/S10% Owner0Aug 14, 20250
Thompson Elizabeth H.Z.Director0Aug 14, 20250
Harler Mary BethChief Executive Officer0Aug 14, 20250
Decker Lisa LynnCHIEF BUSINESS OFFICER68,169Jul 25, 20250
Tahir MisbahCHIEF FINANCIAL OFFICER170,061Jul 25, 20250
Weber StevenPRINCIPAL ACCOUNTING OFFICER26,530Jun 20, 20250
Takimoto Chris HCHIEF MEDICAL OFFICER154,331Sep 17, 20240
Schwarzer FredCEO AND PRESIDENT250,124Sep 17, 20240
Keyt BruceCHIEF SCIENTIFIC OFFICER242,948Sep 17, 20240
Gauthier GeorgeChief Commercial Officer39,642Dec 1, 20230
Loberg Michael DDirector1,138Oct 3, 20230
Chen Daniel ShinYuChief Medical Officer116,518Jul 6, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jul 5, 2023 (view filing)Jul 32 daysGauthier GeorgeChief Commercial OfficerSSale−936$9.42−$8.82K−2.3%40.0K after
Jul 5, 2023 (view filing)Jun 305 daysTopsoe Christina TengDirector, 10% OwnerPPurchase+3.00K$9.32+$28.0K+44.1%9.80K after
Jul 3, 2023 (view filing)9:45 PM ETJun 294 daysRedmile Group, LLC and 1 otherDirectorSSale−80.4K$9.42−$757.6K−2.7%2.89M after
Jul 3, 2023 (view filing)9:45 PM ETJun 294 daysRedmile Group, LLC and 1 otherDirectorPPurchase+80.4K$9.42+$757.6K+2.8%2.97M after
Jul 3, 2023 (view filing)Jun 29-304 daysTopsoe Jakob HaldorDirector, 10% OwnerPPurchase+7.00K$9.18+$64.2K+9.4%81.6K after2 lots
Jun 28, 2023 (view filing)5:00 PM ETJun 262 daysBaker Julian and 5 othersDirectorPPurchase+5.63M$8.00+$45.0M–9.89M afterDerivative2 lots
Jun 28, 2023 (view filing)Jun 262 daysTopsoe Jakob HaldorDirector, 10% OwnerPPurchase+1.69M$8.00+$13.5M–5.04M afterDerivativeDuplicate filing
Jun 28, 2023 (view filing)Jun 262 daysTopsoe Christina TengDirector, 10% OwnerPPurchase+1.69M$8.00+$13.5M–5.04M afterDerivativeDuplicate filing
Jun 28, 2023 (view filing)Jun 262 daysTopsoe Holding A/S10% OwnerPPurchase+1.69M$8.00+$13.5M–5.04M afterDerivative
Jun 28, 2023 (view filing)Jun 262 daysBehrens M KathleenDirectorPPurchase+112.5K$8.00+$900.0K+51.6%330.7K after
May 25, 2023 (view filing)May 232 daysTakimoto Chris HChief Medical OfficerSSale−1.26K$12.31−$15.5K−2.2%54.7K after2 lots
May 25, 2023 (view filing)May 232 daysTahir MisbahChief Financial OfficerSSale−1.26K$12.31−$15.5K−2.4%50.7K after2 lots
May 25, 2023 (view filing)May 232 daysSchwarzer FredCEO and PresidentSSale−1.26K$12.31−$15.5K−1.0%121.8K after2 lots
May 25, 2023 (view filing)May 232 daysKeyt BruceChief Scientific OfficerSSale−982$12.31−$12.1K−0.7%138.1K after2 lots
May 25, 2023 (view filing)May 232 daysGauthier GeorgeChief Commercial OfficerSSale−1.26K$12.31−$15.5K−3.0%41.0K after2 lots
May 25, 2023 (view filing)May 232 daysDecker Lisa LynnChief Business OfficerSSale−1.26K$12.31−$15.5K−3.0%41.2K after2 lots
Apr 6, 2023 (view filing)Apr 51 dayGauthier GeorgeChief Commercial OfficerSSale−935$12.60−$11.8K−2.7%33.9K after
Mar 16, 2023 (view filing)Mar 142 daysTakimoto Chris HChief Medical OfficerSSale−1.77K$18.73−$33.1K−5.8%28.8K after
Mar 16, 2023 (view filing)Mar 142 daysTahir MisbahChief Financial OfficerSSale−1.77K$18.73−$33.1K−6.5%25.3K after
Mar 16, 2023 (view filing)Mar 142 daysKeyt BruceChief Scientific OfficerSSale−1.29K$18.73−$24.2K−1.4%90.7K after
Mar 16, 2023 (view filing)Mar 142 daysGauthier GeorgeChief Commercial OfficerSSale−1.06K$18.73−$19.9K−5.4%18.6K after
Mar 16, 2023 (view filing)Mar 142 daysDecker Lisa LynnChief Business OfficerSSale−1.06K$18.73−$19.9K−6.0%16.7K after
Dec 20, 2022 (view filing)Dec 164 daysTakimoto Chris HChief Medical OfficerSSale−5.43K$18.98−$103.1K−15.1%30.6K after2 lots
Dec 20, 2022 (view filing)Dec 16-194 daysTahir MisbahChief Financial OfficerSSale−6.08K$19.62−$119.4K−18.3%27.1K after3 lots
Dec 20, 2022 (view filing)Dec 164 daysSchwarzer FredCEO and PresidentSSale−12.4K$18.98−$234.8K−37.8%20.4K after2 lots
Dec 20, 2022 (view filing)Dec 164 daysKeyt BruceChief Scientific OfficerSSale−5.37K$18.98−$101.9K−8.4%58.2K after2 lots
Dec 20, 2022 (view filing)Dec 164 daysGauthier GeorgeChief Commercial OfficerSSale−4.35K$18.98−$82.6K−18.2%19.6K after2 lots
Dec 20, 2022 (view filing)Dec 164 daysDecker Lisa LynnChief Business OfficerSSale−2.48K$18.98−$47.1K−12.3%17.8K after2 lots
Nov 28, 2022 (view filing)Nov 235 daysTakimoto Chris HChief Medical OfficerSSale−877$21.57−$18.9K−2.4%36.0K after2 lots
Nov 28, 2022 (view filing)Nov 235 daysTahir MisbahChief Financial OfficerSSale−877$21.57−$18.9K−2.6%33.2K after2 lots
Nov 28, 2022 (view filing)Nov 235 daysSchwarzer FredCEO and PresidentSSale−1.26K$21.57−$27.1K−3.7%32.7K after2 lots
Nov 28, 2022 (view filing)Nov 235 daysKeyt BruceChief Scientific OfficerSSale−877$21.57−$18.9K−2.2%38.6K after2 lots
Nov 28, 2022 (view filing)Nov 235 daysGauthier GeorgeChief Commercial OfficerSSale−1.26K$21.57−$27.1K−5.0%24.0K after2 lots
Nov 28, 2022 (view filing)Nov 235 daysDecker Lisa LynnChief Business OfficerSSale−1.26K$21.57−$27.1K−5.8%20.3K after2 lots
Nov 10, 2022 (view filing)Nov 82 daysBehrens M KathleenDirectorPPurchase+60.0K$17.14+$1.03M+37.9%218.2K after
Oct 6, 2022 (view filing)Oct 42 daysKeyt BruceChief Scientific OfficerSSale−25.0K$22.84−$571.0K−38.8%39.5K after
Oct 3, 2022 (view filing)Sep 294 daysLoberg Michael DDirectorPPurchase+5.82K$19.62+$114.2K+19.7%35.3K after
Sep 29, 2022 (view filing)Sep 27-282 daysLoberg Michael DDirectorPPurchase+6.68K$20.90+$139.6K+29.3%29.5K after2 lots
Sep 8, 2022 (view filing)Sep 6-82 daysKeyt BruceChief Scientific OfficerSSale−25.0K$19.34−$483.5K−38.8%39.5K after4 lots
Aug 22, 2022 (view filing)Aug 18-224 daysKeyt BruceChief Scientific OfficerSSale−25.0K$22.18−$554.4K−38.8%39.5K after3 lots
May 26, 2022 (view filing)May 242 daysTakimoto Chris HChief Medical OfficerSSale−938$17.10−$16.0K−2.5%36.9K after
May 26, 2022 (view filing)May 26Same dayTahir MisbahChief Financial OfficerSSale−950$17.10−$16.2K−2.7%33.7K after
May 26, 2022 (view filing)May 242 daysSchwarzer FredCEO and PresidentSSale−1.36K$17.10−$23.3K−3.9%34.0K after
May 26, 2022 (view filing)May 242 daysKeyt BruceChief Scientific OfficerSSale−939$17.10−$16.1K−2.3%39.5K after
May 26, 2022 (view filing)May 242 daysGauthier GeorgeChief Commercial OfficerSSale−1.34K$17.10−$22.9K−5.0%25.2K after
May 26, 2022 (view filing)May 242 daysDecker Lisa LynnChief Business OfficerSSale−1.36K$17.10−$23.3K−5.9%21.5K after
May 24, 2022 (view filing)May 204 daysTopsoe Jakob HaldorDirector, 10% OwnerPPurchase+1.48K$16.00+$23.7K+2.1%73.5K after
May 16, 2022 (view filing)May 12-134 daysTopsoe Jakob HaldorDirector, 10% OwnerPPurchase+16.1K$14.51+$233.6K+28.8%72.0K after2 lots
May 16, 2022 (view filing)May 12-134 daysTopsoe Christina TengDirector, 10% OwnerPPurchase+6.80K$14.68+$99.8KNew position6.80K after2 lots
Apr 8, 2022 (view filing)Apr 62 daysKeyt BruceChief Scientific OfficerSSale−2.50K$25.00−$62.5K−5.9%40.0K after