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sellWeak10b5-1 plan

Aaron Tachibana sold $1.1M of PSNL

CFO AND COO at Personalis, Inc.. 103,668 shares at an average of $10.78, traded Nov 25, 2025, filed Nov 28, 2025.

Warning score
22
Value
$1.1M
103,668 shares
Holdings after
164,458
-39% from before
From 52-week low
+274%
low $3.00, close $11.21
From 52-week high
0%
high $11.21, as of Nov 25, 2025

Score components

  • Role
    CFO
    +22
  • Trade size
    $1.1M at market
    +25
  • Share of holdings sold
    Sold 39% of holdings
    +10
  • Cluster
    No other insider selling within 14 days
    0
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

PSNLOct 9, 2026 · close 16.00
Since filing Nov 28, 2025: +49.1%SPY +15.2% · excess +34.0%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001401786-25-000004, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 25, 2025MOption exercise
Common Stock10b5-1
+103,668$9.16$950k268,126Nov 28, 2025
Nov 25, 2025SOpen-market sale
Common Stock10b5-1
-103,668$10.78$1.1M164,458Nov 28, 2025
Nov 25, 2025MOption exercise
Stock Option (right to buy)derivative10b5-1
-103,668$0.00$0108,832Nov 28, 2025

Related signals

Other insiders at Personalis, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
43Moderate
PSNLsell 4
Personalis, Inc.
Richard Chen
President and CMO
$65k
3,998 shares
-2%
50Moderate
PSNLsell 4
Personalis, Inc.
Christopher M Hall
Chief Executive Officer
$121k
7,459 shares
-3%
36Weak
PSNLsell 4
Personalis, Inc.
Stephen Michael Moore
SVP and Chief Legal Officer
$34k
2,068 shares
-2%
44Moderate
PSNLsell 4
Personalis, Inc.
Aaron Tachibana
CFO AND COO
$48k
2,931 shares
-1%
43Moderate
PSNLsell
Personalis, Inc.
Christopher M Hall
PRESIDENT AND CEO
$266k
29,612 shares
-17%
23Weak
PSNLsell 2
Personalis, Inc.
Richard Chen
CHIEF MEDICAL OFFICER AND EVP
$2,970
452 shares
-0%
30Weak
PSNLsell 2
Personalis, Inc.
Aaron Tachibana
CFO AND COO
$4,211
641 shares
-0%
30Weak
PSNLsell 3
Personalis, Inc.
Richard Chen
CHIEF MEDICAL OFFICER AND EVP
$4,505
910 shares
-1%
30Weak
PSNLsell 3
Personalis, Inc.
Stephen Michael Moore
SVP and Chief Legal Officer
$8,291
1,675 shares
-3%
37Weak
PSNLsell 3
Personalis, Inc.
Aaron Tachibana
CFO AND COO
$6,390
1,291 shares
-1%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Aaron Tachibana sold $1.1M of PSNL | InsiderTell