Personalis CFO exercises options, sells 51K shares
Personalis, Inc. CFO and COO Aaron Tachibana reported an option exercise and stock sale.
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Form Type
4
Rhea-AI Filing Summary
Personalis, Inc. CFO and COO Aaron Tachibana reported an option exercise and stock sale. On June 26, 2026, he exercised stock options to acquire a total of 51,251 shares of common stock at strike prices of $5.32 and $9.16 per share.
On the same date, he sold 51,251 shares of common stock in open-market transactions at a weighted average price of $13.18 per share, with individual prices ranging from $13.00 to $13.30. After these transactions, he directly held 198,833 shares of Personalis common stock. The filing states the trades were made under a pre-established Rule 10b5-1 trading plan, indicating they were pre-scheduled rather than discretionary.
Insider Trade Summary 10b5-1
Exercise and Sale: 51,251 shares ($292K approx. pre-tax spread)
Exercise and Sale
5 txns
Insider
Tachibana Aaron
Role
CFO AND COO
Sold
51,251 shs ($675K)
Approx. gross sale proceeds
$675K
Approx. exercise cost
$383K
Approx. pre-tax spread
$292K
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (right to buy) | 28,832 | $0.00 | $0.00 |
| Exercise | Stock Option (right to buy) | 22,419 | $0.00 | $0.00 |
| Exercise | Common Stock | 28,832 | $9.16 | $264K |
| Exercise | Common Stock | 22,419 | $5.32 | $119K |
| Sale | Common Stock | 51,251 | $13.18 | $675K |
Holdings After Transaction:
Stock Option (right to buy) — 7,471 contracts (Direct);
Common Stock — 198,833 shares (Direct)
Footnotes (3)
- F1. The sales and option exercise reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 7, 2025.
- F2. The price reported above reflects the weighted average price of the shares sold. The sale price ranged from $13.00 to $13.30 per share. Upon request from the SEC staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.
- F3. The shares subject to the option are fully vested and exercisable.
Key Figures
Shares sold: 51,251 shares
Sale price (weighted average): $13.18 per share
Sale price range: $13.00–$13.30 per share
+5 more
8 metrics
Shares sold
51,251 shares
Common stock sold on June 26, 2026
Sale price (weighted average)
$13.18 per share
Open-market sale of common stock
Sale price range
$13.00–$13.30 per share
Range of prices for sold shares
Options exercised total
51,251 shares
Common shares acquired via option exercises
Option strike price 1
$5.32 per share
Exercise price for 22,419 options
Option strike price 2
$9.16 per share
Exercise price for 28,832 options
Shares held after
198,833 shares
Direct common stock ownership post-transaction
Rule 10b5-1 plan adoption date
August 7, 2025
Date trading plan was adopted
Key Terms
Rule 10b5-1 trading plan, weighted average price, Stock Option (right to buy), fully vested and exercisable, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"The sales and option exercise were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person."
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.
weighted average price financial
"The price reported above reflects the weighted average price of the shares sold."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Stock Option (right to buy) financial
"Security title listed as Stock Option (right to buy) for derivative transactions."
fully vested and exercisable financial
"The shares subject to the option are fully vested and exercisable."
open-market sale financial
"Transaction code S is described as a Sale in open market or private transaction."
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What insider transaction did Personalis (PSNL) report for Aaron Tachibana?
Personalis (PSNL) reported that CFO and COO Aaron Tachibana exercised options for 51,251 shares and sold 51,251 common shares. The transactions occurred on June 26, 2026, combining an option exercise with an open-market stock sale.
Were the recent Personalis (PSNL) insider trades under a Rule 10b5-1 plan?
Yes. The Form 4 notes that Aaron Tachibana’s sales and option exercises were executed under a Rule 10b5-1 trading plan. That plan was adopted on August 7, 2025, indicating the trades were pre-scheduled rather than timed at his discretion.
What type of securities did Personalis (PSNL) CFO transact in this Form 4?
The Personalis (PSNL) Form 4 shows transactions in common stock and stock options. Tachibana exercised stock options, converting them into 51,251 common shares, and then sold 51,251 common shares in open-market transactions at prices between $13.00 and $13.30.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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