Natera Director Matthew Rabinowitz Files Form 144 to Sell $687K in Common Stock

Executive Summary

On October 27, 2026, Matthew Rabinowitz, Director and co-founder of Natera, Inc. ($NTRA), filed a Form 144 proposing the sale of 1,697 shares of common stock with an aggregate market value of approximately $687,115.30 (~$404.90 per share). The proposed transaction is scheduled to be executed through ETrade Corporation on NASDAQ.

Transaction & Acquisition Context

• Nature of Acquisition: The 1,697 shares being sold were acquired upon the vesting of Restricted Stock Units (RSUs) on October 26, 2026, awarded as compensation for services rendered.
• Transaction Size: The 1,697 shares represent a negligible fraction of the company's 144,144,170 outstanding shares (approximately 0.001%). The small transaction size following an RSU vest is characteristic of routine sell-to-cover or post-vesting liquidity transactions.
• Recent Sales Activity: Over the preceding three months, Dr. Rabinowitz has executed multiple large-scale divestments, including 200,000 shares across four separate 50,000-share sales in September and October 2026 for total proceeds exceeding $70 million, as well as smaller programmatic sales following prior RSU vestings.

Market & Trading Significance

Given the modest size of this specific filing ($687K) and its tie to an RSU vesting event on the prior day, this notice carries Low trading significance on a standalone basis.