Aaron Tachibana

CIK: 0001401786

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)12 (54.5%)

Position reduction

Option Exercises (M)7 (31.8%)

Derivative conversions

Awards (A)3 (13.6%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

PSNL

Personalis, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (22 total)

PSNL
Personalis, Inc.
Sep 18, 2026
Sale(S)
Direct
2.9K shares at avg. $16.22$48K
PSNL
Personalis, Inc.
Jun 29, 2026
Exercise(M)
Direct
5K shares at avg. $5.32$27K
PSNL
Personalis, Inc.
Jun 29, 2026
Sale(S)
Direct
5K shares at avg. $14.00$70K
PSNL
Personalis, Inc.
Jun 26, 2026
Exercise(M)
Direct
28.8K shares at avg. $9.16$264K
PSNL
Personalis, Inc.
Jun 26, 2026
Exercise(M)
Direct
22.4K shares at avg. $5.32$119K
PSNL
Personalis, Inc.
Jun 26, 2026
Sale(S)
Direct
51.3K shares at avg. $13.18$675K
PSNL
Personalis, Inc.
Jun 4, 2026
Exercise(M)
Direct
40K shares at avg. $9.16$366K
PSNL
Personalis, Inc.
Jun 4, 2026
Sale(S)
Direct
40K shares at avg. $12.01$480K
PSNL
Personalis, Inc.
May 29, 2026
Sale(S)
Direct
38.8K shares at avg. $11.58$449K
PSNL
Personalis, Inc.
May 29, 2026
Exercise(M)
Direct
38.8K shares at avg. $9.16$355K
PSNL
Personalis, Inc.
Mar 15, 2026
Award(A)
Direct
34.4K shares-
PSNL
Personalis, Inc.
Feb 23, 2026
Award(A)
Stock Option (right to buy)
Direct
15K shares-
PSNL
Personalis, Inc.
Jan 22, 2026
Sale(S)
Direct
1.2K shares at avg. $11.50$14K
PSNL
Personalis, Inc.
Jan 22, 2026
Exercise(M)
Direct
1.2K shares at avg. $9.16$11K
PSNL
Personalis, Inc.
Nov 25, 2025
Sale(S)
Direct
103.7K shares at avg. $10.78$1.1M
PSNL
Personalis, Inc.
Nov 25, 2025
Exercise(M)
Direct
103.7K shares at avg. $9.16$950K
PSNL
Personalis, Inc.
Jul 28, 2025
Sale(S)
Direct
641 shares at avg. $6.57$4K
PSNL
Personalis, Inc.
May 16, 2025
Sale(S)
Direct
1.3K shares at avg. $4.95$6K
PSNL
Personalis, Inc.
Mar 15, 2025
Award(A)
Stock Option (right to buy)
Direct
250K shares-
PSNL
Personalis, Inc.
Jan 28, 2025
Sale(S)
Direct
708 shares at avg. $5.79$4K
PSNL
Personalis, Inc.
Dec 16, 2024
Sale(S)
Direct
6.9K shares at avg. $3.82$26K
PSNL
Personalis, Inc.
Nov 18, 2024
Sale(S)
Direct
1.3K shares at avg. $3.79$5K

		Type	Shares	Price		Ownership
Sep 18, 2026	PSNL Personalis, Inc.	Sale(S)	2,931	$16.22	$47,541	Direct
Jun 29, 2026	PSNL Personalis, Inc.	Exercise(M)	4,982	$5.32	$26,504	Direct
Jun 29, 2026	PSNL Personalis, Inc.	Sale(S)	4,982	$14.00	$69,748	Direct
Jun 26, 2026	PSNL Personalis, Inc.	Exercise(M)	28,832	$9.16	$264,101	Direct
Jun 26, 2026	PSNL Personalis, Inc.	Exercise(M)	22,419	$5.32	$119,269	Direct
Jun 26, 2026	PSNL Personalis, Inc.	Sale(S)	51,251	$13.18	$675,488	Direct
Jun 4, 2026	PSNL Personalis, Inc.	Exercise(M)	40,000	$9.16	$366,400	Direct
Jun 4, 2026	PSNL Personalis, Inc.	Sale(S)	40,000	$12.01	$480,400	Direct
May 29, 2026	PSNL Personalis, Inc.	Sale(S)	38,799	$11.58	$449,292	Direct
May 29, 2026	PSNL Personalis, Inc.	Exercise(M)	38,799	$9.16	$355,399	Direct
Mar 15, 2026	PSNL Personalis, Inc.	Award(A)	34,375	-	$0	Direct
Feb 23, 2026	PSNL Personalis, Inc.	Award(A) Stock Option (right to buy)	15,000	-	-	Direct
Jan 22, 2026	PSNL Personalis, Inc.	Sale(S)	1,201	$11.50	$13,812	Direct
Jan 22, 2026	PSNL Personalis, Inc.	Exercise(M)	1,201	$9.16	$11,001	Direct
Nov 25, 2025	PSNL Personalis, Inc.	Sale(S)	103,668	$10.78	$1,117,541	Direct
Nov 25, 2025	PSNL Personalis, Inc.	Exercise(M)	103,668	$9.16	$949,599	Direct
Jul 28, 2025	PSNL Personalis, Inc.	Sale(S)	641	$6.57	$4,211	Direct
May 16, 2025	PSNL Personalis, Inc.	Sale(S)	1,291	$4.95	$6,390	Direct
Mar 15, 2025	PSNL Personalis, Inc.	Award(A) Stock Option (right to buy)	250,000	-	-	Direct
Jan 28, 2025	PSNL Personalis, Inc.	Sale(S)	708	$5.79	$4,099	Direct
Dec 16, 2024	PSNL Personalis, Inc.	Sale(S)	6,865	$3.82	$26,224	Direct
Nov 18, 2024	PSNL Personalis, Inc.	Sale(S)	1,307	$3.79	$4,954	Direct

1-22 of 22 transactions

About Tachibana Aaron

Tachibana Aaron (SEC CIK 0001401786) files insider reports with the SEC as CFO AND COO of Personalis, Inc. (PSNL).

Signal8 holds 15 ownership filings by Tachibana Aaron, all Form 4s, filed between Nov 20, 2024 and Sep 22, 2026. Those filings report 22 transactions, from Nov 18, 2024 to Sep 18, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Tachibana Aaron's filings is in FREMONT, CA.

Recent filings by Tachibana Aaron

Sep 18, 2026: Open-market sale of PSNL shares (Form 4, code S).
Jun 29, 2026: Option exercise of PSNL shares (Form 4, code M).
Jun 29, 2026: Open-market sale of PSNL shares (Form 4, code S).
Jun 26, 2026: Option exercises of PSNL shares (2 lines, Form 4, code M).
Jun 26, 2026: Open-market sale of PSNL shares (Form 4, code S).

Other insiders filing for Personalis, Inc. (PSNL)

Moore Stephen Michael, SVP and Chief Legal Officer
Chen Richard, President and CMO
Hall Christopher M, Chief Executive Officer
EASTHAM KARIN, Director
BOWMAN A BLAINE, Director
WIDDER KENNETH J, Director

How to read Form 4 transaction codes