John Sakys

CIK: 0001197710

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (15.8%)

Position reduction

Option Exercises (M)7 (36.8%)

Derivative conversions

Awards (A)4 (21.1%)

Compensation grants

Other (G, F, J, C, D, …)5 (26.3%)

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

Companies & Roles (1)

MLAB

MESA LABORATORIES INC /CO/

Officer

Discretionary Trading P&L

Holdings

Transaction History (19 total)

MLAB
MESA LABORATORIES INC /CO/
Jun 22, 2026
Sale(S)
Direct
2.8K shares at avg. $89.50$253K
MLAB
MESA LABORATORIES INC /CO/
Jun 18, 2026
Exercise(M)
Direct
1K shares at avg. $95.10$99K
MLAB
MESA LABORATORIES INC /CO/
Jun 18, 2026
Award(A)
Direct
2.3K shares at avg. $95.10$217K
MLAB
MESA LABORATORIES INC /CO/
Jun 18, 2026
Exercise(M)
Direct
2.8K shares at avg. $95.10$262K
MLAB
MESA LABORATORIES INC /CO/
Jun 16, 2026
Sale(S)
Direct
1.2K shares at avg. $101.27$124K
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2026
Award(A)
Restricted Stock Units - 9
Direct
8.4K shares-
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2026
Exercise(M)
Direct
2.7K shares at avg. $104.08$283K
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2026
Expiration(E)
Non Qualified Stock Option
Direct
4K shares-
MLAB
MESA LABORATORIES INC /CO/
Jun 21, 2025
Exercise(M)
Direct
1K shares at avg. $95.82$99K
MLAB
MESA LABORATORIES INC /CO/
Jun 21, 2025
Tax Payment(F)
Direct
454 shares at avg. $95.82$44K
MLAB
MESA LABORATORIES INC /CO/
Jun 18, 2025
Tax Payment(F)
Direct
1.2K shares at avg. $92.99$116K
MLAB
MESA LABORATORIES INC /CO/
Jun 18, 2025
Exercise(M)
Direct
2.8K shares at avg. $92.99$264K
MLAB
MESA LABORATORIES INC /CO/
Jun 16, 2025
Sale(S)
Direct
642 shares at avg. $97.12$62K
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2025
Award(A)
Restricted Stock Units - 8
Direct
8.1K shares-
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2025
Exercise(M)
Direct
793 shares-
MLAB
MESA LABORATORIES INC /CO/
Jun 10, 2025
Expiration(E)
Non Qualified Stock Options
Direct
4.1K shares-
MLAB
MESA LABORATORIES INC /CO/
Sep 1, 2024
Exercise(M)
Direct
1K shares-
MLAB
MESA LABORATORIES INC /CO/
Sep 1, 2024
Tax Payment(F)
Direct
454 shares at avg. $133.69$61K
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2015
Award(A)
Direct
668 shares-

		Type	Shares	Price		Ownership
Jun 22, 2026	MLAB MESA LABORATORIES INC /CO/	Sale(S)	2,827	$89.50	$253,022	Direct
Jun 18, 2026	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	1,036	$95.10	$98,524	Direct
Jun 18, 2026	MLAB MESA LABORATORIES INC /CO/	Award(A)	2,282	$95.10	$217,018	Direct
Jun 18, 2026	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	2,756	$95.10	$262,096	Direct
Jun 16, 2026	MLAB MESA LABORATORIES INC /CO/	Sale(S)	1,223	$101.27	$123,850	Direct
Jun 15, 2026	MLAB MESA LABORATORIES INC /CO/	Award(A) Restricted Stock Units - 9	8,416	-	-	Direct
Jun 15, 2026	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	2,717	$104.08	$282,785	Direct
Jun 15, 2026	MLAB MESA LABORATORIES INC /CO/	Expiration(E) Non Qualified Stock Option	3,951	-	-	Direct
Jun 21, 2025	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	1,036	$95.82	$99,270	Direct
Jun 21, 2025	MLAB MESA LABORATORIES INC /CO/	Tax Payment(F)	454	$95.82	$43,502	Direct
Jun 18, 2025	MLAB MESA LABORATORIES INC /CO/	Tax Payment(F)	1,243	$92.99	$115,587	Direct
Jun 18, 2025	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	2,840	$92.99	$264,092	Direct
Jun 16, 2025	MLAB MESA LABORATORIES INC /CO/	Sale(S)	642	$97.12	$62,350	Direct
Jun 15, 2025	MLAB MESA LABORATORIES INC /CO/	Award(A) Restricted Stock Units - 8	8,133	-	-	Direct
Jun 15, 2025	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	793	-	-	Direct
Jun 10, 2025	MLAB MESA LABORATORIES INC /CO/	Expiration(E) Non Qualified Stock Options	4,087	-	-	Direct
Sep 1, 2024	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	1,037	-	$0	Direct
Sep 1, 2024	MLAB MESA LABORATORIES INC /CO/	Tax Payment(F)	454	$133.69	$60,695	Direct
Jun 15, 2015	MLAB MESA LABORATORIES INC /CO/	Award(A)	668	-	-	Direct

1-19 of 19 transactions

About Sakys John

Sakys John (SEC CIK 0001197710) files insider reports with the SEC as CFO of MESA LABORATORIES INC /CO/ (MLAB).

Signal8 holds 9 ownership filings by Sakys John, all Form 4s, filed between Sep 6, 2024 and Jun 23, 2026. Those filings report 19 transactions, from Jun 15, 2015 to Jun 22, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Sakys John's filings is in LAKEWOOD, CO.

Recent filings by Sakys John

Jun 22, 2026: Open-market sale of MLAB shares (Form 4, code S).
Jun 18, 2026: Option exercise of MLAB shares (Form 4, code M).
Jun 18, 2026: Grant or award of MLAB shares (Form 4, code A).
Jun 18, 2026: Option exercise of MLAB shares (Form 4, code M).
Jun 16, 2026: Open-market sale of MLAB shares (Form 4, code S).

Other insiders filing for MESA LABORATORIES INC /CO/ (MLAB)

How to read Form 4 transaction codes