GENB Generate Biomedicines, Inc.

NASDAQ
$16.39

Generate Biomedicines, Inc. (GENB) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal Bullish Insiders bought more than they sold over this window — uncommon at any size.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 0 sellers in the last 90 days
Insiders buying
5
12 transactions
Insiders selling
0
0 transactions
Purchases
$150.3M
9,398,800 shares
Sales
$0
0 shares
Net activity
$150.3M
purchases less sales

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: March 4, 2026 , by Nally Michael .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Nally Michael Chief Executive Officer Buy 20,000 $12.00 $240.0K 572,707
6 fills Buy 9,375,000 $16.00 $150.0M 15,264,724
Silvers Jason 3 fills President & CFO Buy 2,000 $16.00 $32.0K 1,000
Mendillo Jane L Director Buy 1,500 $16.00 $24.0K 1,500
Grous Beth Chief People Officer Buy 300 $16.00 $4.8K 300

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.