Natera Executive Chairman Matthew Rabinowitz sells about $20.1 million of stock after option exercise

Natera Executive Chairman Matthew Rabinowitz turned a batch of old stock options into about $20.1 million in cash on Thursday, selling every share he picked up from the exercise.

According to a Form 4 filing Friday evening, Rabinowitz exercised 50,000 stock options at $10.41 a share on Oct. 15 and sold 50,000 Natera shares the same day. The filing says the sales were made under a Rule 10b5-1 trading plan he adopted on June 12, 2026.

The shares went in 19 separate blocks reported at weighted-average prices from $388.32 to $408.24. The underlying trades ranged from $387.97 to $408.60 a share. Taken together, the reported sales come to about $20.1 million, or roughly $402.64 a share on average.

The largest single block was 10,321 shares at a weighted-average $404.64, according to the filing.

Because he sold the same number of shares he received from the exercise, Rabinowitz's direct stake ended the day where it began. He held 2,119,394 Natera shares directly after the last reported sale, the filing shows.

The exercised options were fully exercisable and were set to expire on June 8, 2027. The Form 4 shows no options left under that grant after the exercise. Rabinowitz is also a director of the company, according to the filing.

By the numbers

• Options exercised: 50,000 at $10.41
• Shares sold: 50,000 on Oct. 15, 2026
• Weighted-average sale prices: $388.32 to $408.24
• Approximate proceeds: $20.1 million
• Direct holdings after the trades: 2,119,394 shares
• Trading plan adopted: June 12, 2026

Sources

1. Natera, Inc., Form 4 for Matthew Rabinowitz (Executive Chairman), filed Oct. 16, 2026, accession 0001646382-26-000023

This article is for informational and educational purposes only and is not investment advice. It is not a recommendation to buy or sell any security.

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