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Feinberg Peter

In the past year, 4 open-market purchase filings worth $225.7K and no sales.

Current role at each company

Open-market trades in the past year

Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.

Bought
$225.7K
4 filings
Sold
–
0 filings
Net
+$225.7K
Bought minus sold
Companies
1
With open-market trades

Trades

Every Form 4 that lists Feinberg Peter as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.

IMRX Immuneering Corp

Director12 trades

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jan 14, 2026 (view filing)Jan 122 daysFeinberg PeterDirectorPPurchaseClass A Common Stock+20.0K$4.35+$87.0K+17.3%135.4K after
Oct 7, 2025 (view filing)Oct 34 daysFeinberg PeterDirectorPPurchaseClass A Common Stock+7.50K$6.67+$50.0K+5.0%156.8K after
Oct 1, 2025 (view filing)Sep 301 dayFeinberg PeterDirectorPPurchaseClass A Common Stock+7.50K$7.03+$52.7K+5.3%149.3K after
Sep 30, 2025 (view filing)Sep 291 dayFeinberg PeterDirectorPPurchaseClass A Common Stock+5.00K$7.18+$35.9K+3.7%141.8K after
Jun 23, 2025 (view filing)Jun 185 daysFeinberg PeterDirectorPPurchaseClass A Common Stock+25.0K$2.53+$63.3K+22.4%136.8K after
Mar 25, 2024 (view filing)Mar 223 daysFeinberg PeterDirectorPPurchaseClass A Common Stock+25.0K$2.55+$63.8K+28.8%111.8K after
Mar 19, 2024 (view filing)Mar 18-191 dayFeinberg PeterDirectorPPurchaseClass A Common Stock+75.0K$2.44+$183.2K+637.4%86.8K after3 lots
Mar 16, 2022 (view filing)Mar 151 dayFeinberg PeterDirectorPPurchaseClass A Common Stock+6.67K$6.75+$45.0K+130.8%11.8K after
Sep 21, 2021 (view filing)Sep 201 dayFeinberg PeterDirectorPPurchaseClass A Common Stock+4.75K$24.45+$116.1K+1,361.0%5.10K after
Sep 15, 2021 (view filing)Sep 132 daysFeinberg PeterDirectorPPurchaseClass A Common Stock+5.75K$21.51+$123.7K+1.5%392.2K after

See all 12 trades at IMRX