Brian David Archbold

CIK: 0001776947

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)4 (20.0%)

Position reduction

Option Exercises (M)8 (40.0%)

Derivative conversions

Awards (A)3 (15.0%)

Compensation grants

Other (G, F, J, C, D, …)5 (25.0%)

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 (20 total)

MLAB
MESA LABORATORIES INC /CO/
Jun 22, 2026
Sale(S)
Direct
2.5K shares at avg. $89.50$225K
MLAB
MESA LABORATORIES INC /CO/
Jun 18, 2026
Exercise(M)
Direct
844 shares at avg. $95.10$80K
MLAB
MESA LABORATORIES INC /CO/
Jun 18, 2026
Award(A)
Direct
1.9K shares at avg. $95.10$177K
MLAB
MESA LABORATORIES INC /CO/
Jun 18, 2026
Exercise(M)
Direct
2.5K shares at avg. $95.10$236K
MLAB
MESA LABORATORIES INC /CO/
Jun 16, 2026
Sale(S)
Direct
1.2K shares at avg. $101.27$117K
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2026
Award(A)
Restricted Stock Units - 10
Direct
4.3K shares-
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2026
Exercise(M)
Direct
2.5K shares at avg. $104.08$255K
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2026
Expiration(E)
Non Qualified Stock Options
Direct
1.8K shares-
MLAB
MESA LABORATORIES INC /CO/
Jun 21, 2025
Tax Payment(F)
Direct
385 shares at avg. $95.82$37K
MLAB
MESA LABORATORIES INC /CO/
Jun 21, 2025
Exercise(M)
Direct
844 shares at avg. $95.82$81K
MLAB
MESA LABORATORIES INC /CO/
Jun 18, 2025
Tax Payment(F)
Direct
1.2K shares at avg. $92.99$108K
MLAB
MESA LABORATORIES INC /CO/
Jun 18, 2025
Exercise(M)
Direct
2.6K shares at avg. $92.99$238K
MLAB
MESA LABORATORIES INC /CO/
Jun 16, 2025
Sale(S)
Direct
472 shares at avg. $97.12$46K
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2025
Award(A)
Restricted Stock Units - 9
Direct
7.3K shares-
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2025
Exercise(M)
Direct
495 shares-
MLAB
MESA LABORATORIES INC /CO/
Jun 15, 2025
Exercise(M)
Direct
535 shares-
MLAB
MESA LABORATORIES INC /CO/
Jun 10, 2025
Expiration(E)
Non Qualified Stock Option
Direct
2.1K shares-
MLAB
MESA LABORATORIES INC /CO/
Sep 13, 2024
Sale(S)
Direct
1.5K shares at avg. $125.00$187K
MLAB
MESA LABORATORIES INC /CO/
Sep 1, 2024
Exercise(M)
Direct
845 shares-
MLAB
MESA LABORATORIES INC /CO/
Sep 1, 2024
Tax Payment(F)
Direct
386 shares at avg. $133.69$52K

		Type	Shares	Price		Ownership
Jun 22, 2026	MLAB MESA LABORATORIES INC /CO/	Sale(S)	2,516	$89.50	$225,187	Direct
Jun 18, 2026	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	844	$95.10	$80,264	Direct
Jun 18, 2026	MLAB MESA LABORATORIES INC /CO/	Award(A)	1,859	$95.10	$176,791	Direct
Jun 18, 2026	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	2,480	$95.10	$235,848	Direct
Jun 16, 2026	MLAB MESA LABORATORIES INC /CO/	Sale(S)	1,151	$101.27	$116,558	Direct
Jun 15, 2026	MLAB MESA LABORATORIES INC /CO/	Award(A) Restricted Stock Units - 10	4,328	-	-	Direct
Jun 15, 2026	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	2,454	$104.08	$255,412	Direct
Jun 15, 2026	MLAB MESA LABORATORIES INC /CO/	Expiration(E) Non Qualified Stock Options	1,780	-	-	Direct
Jun 21, 2025	MLAB MESA LABORATORIES INC /CO/	Tax Payment(F)	385	$95.82	$36,891	Direct
Jun 21, 2025	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	844	$95.82	$80,872	Direct
Jun 18, 2025	MLAB MESA LABORATORIES INC /CO/	Tax Payment(F)	1,166	$92.99	$108,426	Direct
Jun 18, 2025	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	2,556	$92.99	$237,682	Direct
Jun 16, 2025	MLAB MESA LABORATORIES INC /CO/	Sale(S)	472	$97.12	$45,840	Direct
Jun 15, 2025	MLAB MESA LABORATORIES INC /CO/	Award(A) Restricted Stock Units - 9	7,346	-	-	Direct
Jun 15, 2025	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	495	-	-	Direct
Jun 15, 2025	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	535	-	-	Direct
Jun 10, 2025	MLAB MESA LABORATORIES INC /CO/	Expiration(E) Non Qualified Stock Option	2,129	-	-	Direct
Sep 13, 2024	MLAB MESA LABORATORIES INC /CO/	Sale(S)	1,499	$125.00	$187,375	Direct
Sep 1, 2024	MLAB MESA LABORATORIES INC /CO/	Exercise(M)	845	-	$0	Direct
Sep 1, 2024	MLAB MESA LABORATORIES INC /CO/	Tax Payment(F)	386	$133.69	$51,604	Direct

1-20 of 20 transactions

About Archbold Brian David

Archbold Brian David (SEC CIK 0001776947) files insider reports with the SEC as SVP Operations of MESA LABORATORIES INC /CO/ (MLAB).

Signal8 holds 10 ownership filings by Archbold Brian David, all Form 4s, filed between Sep 6, 2024 and Jun 23, 2026. Those filings report 20 transactions, from Sep 1, 2024 to Jun 22, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Archbold Brian David's filings is in LAKEWOOD, CO.

Recent filings by Archbold Brian David

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