RNTX Rein Therapeutics, Inc.

NASDAQ
$0.76

Rein Therapeutics, Inc. (RNTX) 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
3
10 transactions
Insiders selling
0
0 transactions
Purchases
$625.6K
482,293 shares
Sales
$0
0 shares
Net activity
$625.6K
purchases less sales

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: May 27, 2026 , by VON RICKENBACH JOSEF H .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
VON RICKENBACH JOSEF H Director Buy 4,500 $1.07 $4.8K 62,514
VON RICKENBACH JOSEF H Director Buy 23,190 $1.06 $24.5K 58,014
VON RICKENBACH JOSEF H Director Buy 15,950 $1.05 $16.7K 34,824
VON RICKENBACH JOSEF H Director Buy 3,420 $1.04 $3.6K 18,874
WINDSOR JAMES BRIAN See Remarks Buy 25,000 $1.00 $25.0K 27,046
Buy 104,183 $1.22 $127.6K 926,441
Buy 178,392 $1.39 $248.0K 500,000
2 fills Buy 97,482 $1.37 $133.5K 822,258
Buy 30,176 $1.39 $42.0K 729,616

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.