PSNL Personalis, Inc.

NASDAQ
$16.21

Personalis, Inc. (PSNL) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with PSNL's own trailing one-year pace, with 97% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 3 sellers in the last 90 days
Insiders buying
1
12 transactions
Insiders selling
3
12 transactions
Purchases
$2.7M
320,267 shares
Sales
$8.5M
669,513 shares
Net activity
-$5.8M
purchases less sales

How much of that selling was preplanned? 97% planned / 3% discretionary

10b5-1 plan sales $8.2M 11 transactions · 639,901 shares
Discretionary sales $266.2K 1 transaction · 29,612 shares

Largest single sale: $1.5M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: December 22, 2025 , by Tempus AI, Inc. .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Chen Richard President and CMO Sell 10b5-1 100,000 $15.15 $1.5M 173,880 −36.5% of holding
Hall Christopher M Chief Executive Officer Sell 10b5-1 100,000 $15.08 $1.5M 235,986 −29.8% of holding
Tachibana Aaron CFO AND COO Sell 10b5-1 4,982 $14.00 $69.7K 198,833 −2.4% of holding
Hall Christopher M Chief Executive Officer Sell 10b5-1 100,000 $13.15 $1.3M 235,986 −29.8% of holding
Tachibana Aaron CFO AND COO Sell 10b5-1 51,251 $13.18 $675.5K 198,833 −20.5% of holding
Tachibana Aaron CFO AND COO Sell 10b5-1 40,000 $12.01 $480.4K 198,833 −16.7% of holding
Hall Christopher M Chief Executive Officer Sell 10b5-1 80,091 $11.02 $882.6K 235,986 −25.3% of holding
Tachibana Aaron CFO AND COO Sell 10b5-1 38,799 $11.58 $449.3K 198,833 −16.3% of holding
Hall Christopher M Chief Executive Officer Sell 10b5-1 19,909 $11.02 $219.4K 235,986 −7.8% of holding
Tachibana Aaron CFO AND COO Sell 10b5-1 1,201 $11.50 $13.8K 164,458 −0.7% of holding
Tempus AI, Inc. 10% Owner Buy 28,000 $8.93 $250.0K 13,039,067
Tempus AI, Inc. 10% Owner Buy 29,641 $8.39 $248.7K 13,011,067
Tempus AI, Inc. 10% Owner Buy 31,430 $7.91 $248.6K 12,981,426
Tempus AI, Inc. 10% Owner Buy 31,650 $7.86 $248.8K 12,949,996
Tachibana Aaron CFO AND COO Sell 10b5-1 103,668 $10.78 $1.1M 164,458 −38.7% of holding
Tempus AI, Inc. 2 fills 10% Owner Buy 23,600 $10.62 $250.7K 12,918,346
Tempus AI, Inc. 10% Owner Buy 25,225 $9.87 $249.0K 12,894,746
Tempus AI, Inc. 2 fills 10% Owner Buy 26,499 $9.40 $249.2K 12,869,521
Tempus AI, Inc. 10% Owner Buy 28,827 $8.63 $248.8K 12,843,022
Tempus AI, Inc. 10% Owner Buy 30,645 $8.12 $248.8K 12,814,195
Tempus AI, Inc. 10% Owner Buy 64,750 $7.67 $496.6K 12,783,550
Hall Christopher M PRESIDENT AND CEO Sell 29,612 $8.99 $266.2K 148,486 −16.6% of holding

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.