Tectonic Therapeutic (TECX) CSO sells 43 shares in 10b5-1 trade
Rhea-AI Filing Summary
Tectonic Therapeutic, Inc. (TECX) reported that Chief Scientific Officer Peter McNamara exercised options and sold shares on August 25, 2026 under a Rule 10b5-1 trading plan. He exercised 43 options at an exercise price of $14.71 per share into 43 shares of common stock, then sold those 43 common shares in a sale transaction at $36.52 per share. Following the exercise, 7,787 stock options remained outstanding from this grant, which vests in 48 equal monthly installments beginning October 25, 2025.
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Insider Trade Summary 10b5-1
Exercise and Sale: 43 shares ($937.83 approx. pre-tax spread)
Exercise and Sale
3 txns
Insider
McNamara Peter
Role
Chief Scientific Officer
Sold
43 shs ($2K)
Approx. gross sale proceeds
$2K
Approx. exercise cost
$632.53
Approx. pre-tax spread
$937.83
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Employee Stock Option (Right to Buy) F1, F2 | 43 | $0.00 | $0.00 |
| Exercise | Common Stock F1 | 43 | $14.71 | $632.53 |
| Sale | Common Stock F1 | 43 | $36.52 | $2K |
Holdings After Transaction:
Employee Stock Option (Right to Buy) — 7,787 shares (Direct);
Common Stock — 55,285 shares (Direct)
Footnotes (2)
- F1. This exercise and subsequent sale was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 14, 2025.
- F2. The shares subject to the option vest in 48 equal monthly installments beginning on October 25, 2025, subject to the Reporting Person's continued service to the Issuer on each such vesting date.
Key Figures
Options exercised: 43 shares
Option exercise price: $14.71 per share
Shares sold: 43 shares
+5 more
8 metrics
Options exercised
43 shares
Employee Stock Options for TECX common stock exercised on August 25, 2026
Option exercise price
$14.71 per share
Exercise price of Employee Stock Options converted on August 25, 2026
Shares sold
43 shares
Common stock sold on August 25, 2026 following the option exercise
Sale price
$36.52 per share
Price for sale of 43 TECX common shares on August 25, 2026
Options remaining after transaction
7,787 shares
Total shares underlying options following the derivative transaction
Option expiration date
September 24, 2035
Expiration date of the Employee Stock Option award
Vesting schedule length
48 monthly installments
Options vest in 48 equal monthly installments beginning October 25, 2025
10b5-1 plan adoption date
November 14, 2025
Date the Rule 10b5-1 trading plan governing this exercise and sale was adopted
Key Terms
Rule 10b5-1 trading plan, Employee Stock Option, vest in 48 equal monthly installments, Exercise or conversion of derivative security, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"This exercise and subsequent sale was made pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
Employee Stock Option financial
"security_title: Employee Stock Option (Right to Buy)"
An employee stock option is a promise that lets a worker buy company shares later at a predetermined price, often after they stay for a certain period or meet performance goals — think of it like a coupon that locks in today's price for a future purchase. It matters to investors because options align employees’ incentives with company performance, can increase the number of shares outstanding (dilution) when exercised, and represent a compensation cost that affects reported profits and shareholder value.
vest in 48 equal monthly installments financial
"The shares subject to the option vest in 48 equal monthly installments"
Exercise or conversion of derivative security financial
"transaction_code_description: Exercise or conversion of derivative security"
sale in open market or private transaction financial
"transaction_code_description: Sale in open market or private transaction"
FAQ
What insider transactions did TECX Chief Scientific Officer Peter McNamara report?
Peter McNamara exercised 43 stock options at an exercise price of $14.71 per share into common stock and then sold 43 common shares at $36.52 per share on August 25, 2026, in an open-market or private sale transaction.
Were Peter McNamara’s TECX trades made under a Rule 10b5-1 plan?
Yes. The filing states the exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by Peter McNamara on November 14, 2025, indicating the transactions followed a pre-arranged trading plan.
How many TECX options did Peter McNamara exercise and at what price?
He exercised 43 Employee Stock Options for Tectonic Therapeutic, Inc. common stock at an exercise price of $14.71 per share on August 25, 2026, converting them into 43 shares of common stock.
At what price did Peter McNamara sell TECX common stock on August 25, 2026?
He sold 43 shares of Tectonic Therapeutic, Inc. common stock at a price of $36.52 per share in a transaction coded as a sale (code S), described as a sale in an open market or private transaction.
How many TECX stock options remain after Peter McNamara’s recent exercise?
After the August 25, 2026 exercise, 7,787 stock options of Tectonic Therapeutic, Inc. common stock remained outstanding from this option award, according to the reported total shares following the derivative transaction.
How do Peter McNamara’s TECX options vest?
The filing states the options vest in 48 equal monthly installments beginning on October 25, 2025, subject to Peter McNamara’s continued service to Tectonic Therapeutic, Inc. on each vesting date.
AI-generated analysis. How Rhea-AI works. Not financial advice.
