TRex Bio, Inc.

TRex Bio, Inc. insiders are currently net buyers of TRXB stock, showing neutral sentiment over the past 90 days. Executives have purchased $0 while selling $0, resulting in a positive net flow of $0. This buying activity represents 50% of total transaction volume.

TRex Bio, Inc. has 6 active insiders who have filed SEC Form 4 transactions in the past 90 days. Joel S. Marcus (Executive) leads with 3 transactions totaling $0. Julie Ann Gilmore (Executive) follows with 1 transactions worth $0. Open-market purchases require insiders to invest their own capital, demonstrating genuine conviction.

The Insider Alignment Score measures the ratio of buying to selling activity on a 0-100 scale. TRex Bio, Inc.'s current score of 50/100 indicates neutral insider sentiment. Scores between 40-60 represent neutral or mixed activity. With $0 in purchases and $0 in sales, no strong directional conviction is evident.

The most recent insider transaction occurred on Oct 13, 2026, when S. Marcus Joel (Executive) disposed of 161,828 shares at $0.00 per share for $0. This appears to be a discretionary trade.

Based on SEC Form 4 filings from the past 90 days, TRXB insider trading sentiment is currently neutral with an Alignment Score of 50/100. The balanced activity—$0 bought vs $0 sold—suggests no strong consensus among insiders.

SEC Form 4 is the primary disclosure mechanism for insider trading at publicly traded companies like TRex Bio, Inc.. Corporate insiders must file within two business days of any transaction, making it one of the most timely sources of executive sentiment. At TRXB, we track all Form 4 filings—currently showing 8 transactions from 6 insiders over 90 days.

A 10b5-1 plan allows TRex Bio, Inc. executives to pre-schedule stock sales when they don't possess material non-public information. At TRXB, approximately 0% of recent transactions are 10b5-1 trades. Most trading activity at TRXB appears discretionary, making insider signals more meaningful.

You can monitor TRex Bio, Inc. (TRXB) insider trading activity on this page, which updates within hours of new SEC Form 4 filings. We track all 6 active insiders and provide real-time transaction feeds, the Alignment Score, 10b5-1 vs. discretionary breakdowns, and direct links to SEC EDGAR filings.

Our Alignment Score measures the ratio of insider buying to selling on a scale of 0-100. A score above 70 indicates strong bullish sentiment, while below 30 suggests bearish activity. TRex Bio, Inc.'s current score of 50/100 indicates neutral sentiment with balanced buying and selling activity. This is calculated from $0 in purchases versus $0 in sales over 90 days, resulting in a net flow of $0.

SEC Form 4 filings are mandatory reports that TRex Bio, Inc. insiders must submit within 2 business days. Each filing includes the insider's name, relationship, transaction type, shares, and price. Transaction codes: P (purchase), S (sale), A (award), M (option exercise), G (gift). At TRXB, the most common type is "A" with 6 occurrences. The most recent Form 4 was filed on Oct 13, 2026 by S. Marcus Joel.

Rule 10b5-1 allows corporate insiders to establish pre-scheduled trading plans when they don't possess material non-public information. At TRex Bio, Inc., approximately 0% of recent transactions are executed under 10b5-1 plans, while 100% appear to be discretionary trades. The low percentage means most insider activity at TRXB represents discretionary decisions with more informational value.