Insider tradingForm 4

TRex Bio, Inc. (TRXB) Insider Trading

2 open-market trades reported since Oct 13, 2026: 2 purchases worth $3.80M and 0 sales worth $0.

By insider

Insider	Role	Buys	Bought	Sells	Sold	Latest
Alexandria Venture Investments, LLC	10% owner	1	$2.50M	0	$0	Oct 15, 2026
Svlsf Vi, LLC	10% owner	1	$1.30M	0	$0	Oct 13, 2026

TRXB insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	3 mo. after	Filing
Oct 15	Oct 13	Alexandria Venture Investments, LLC10% owner	10% owner	▲ BUY	178,571	14.00	$2.50M	+15%		Form 4 ↗
Oct 13	Oct 8	Svlsf Vi, LLC10% owner	10% owner (ind.)	▲ BUY	92,857	14.00	$1.30M	New		Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings