IDEAYA Biosciences, Inc.

IDEAYA Biosciences, Inc. insiders are currently net sellers of IDYA stock, showing neutral sentiment over the past 90 days. Total sales of $34.9M outpace purchases of $24.4M, creating a net outflow of $10.5M. However, 36% of these sales are pre-scheduled 10b5-1 plan transactions.

IDEAYA Biosciences, Inc. has 28 active insiders who have filed SEC Form 4 transactions in the past 90 days. Yujiro S. Hata (Executive) leads with 37 transactions totaling $19.7M. Andrew J. Schwab (Executive) follows with 3 transactions worth $10.9M. 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. IDEAYA Biosciences, Inc.'s current score of 41/100 indicates neutral insider sentiment. Scores between 40-60 represent neutral or mixed activity. With $24.4M in purchases and $34.9M in sales, no strong directional conviction is evident.

The most recent insider transaction occurred on Jul 7, 2026, when Andres Ruiz Briseno (Chief Accounting Officer) disposed of 9,550 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, IDYA insider trading sentiment is currently neutral with an Alignment Score of 41/100. The balanced activity—$24.4M bought vs $34.9M sold—suggests no strong consensus among insiders.

SEC Form 4 is the primary disclosure mechanism for insider trading at publicly traded companies like IDEAYA Biosciences, Inc.. Corporate insiders must file within two business days of any transaction, making it one of the most timely sources of executive sentiment. At IDYA, we track all Form 4 filings—currently showing 220 transactions from 28 insiders over 90 days.

A 10b5-1 plan allows IDEAYA Biosciences, Inc. executives to pre-schedule stock sales when they don't possess material non-public information. At IDYA, approximately 36% of recent transactions are 10b5-1 trades. The remaining 64% are discretionary trades, which may carry more informational value.

You can monitor IDEAYA Biosciences, Inc. (IDYA) insider trading activity on this page, which updates within hours of new SEC Form 4 filings. We track all 28 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. IDEAYA Biosciences, Inc.'s current score of 41/100 indicates neutral sentiment with balanced buying and selling activity. This is calculated from $24.4M in purchases versus $34.9M in sales over 90 days, resulting in a net flow of -$10.5M.

SEC Form 4 filings are mandatory reports that IDEAYA Biosciences, 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 IDYA, the most common type is "A" with 24 occurrences. The most recent Form 4 was filed on Jul 7, 2026 by Andres Ruiz Briseno.

Rule 10b5-1 allows corporate insiders to establish pre-scheduled trading plans when they don't possess material non-public information. At IDEAYA Biosciences, Inc., approximately 36% of recent transactions are executed under 10b5-1 plans, while 64% appear to be discretionary trades. This mix provides a balanced picture—some planned, others reflecting real-time decisions.