Oscar Leland Mahan

CIK: 0001898828

Transaction Breakdown

Open Market Buys (P)3 (2.2%)

High conviction signal

Open Market Sales (S)129 (94.9%)

Position reduction

Option Exercises (M)1 (0.7%)

Derivative conversions

Awards (A)2 (1.5%)

Compensation grants

Other (G, F, J, C, D, …)1 (0.7%)

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

Companies & Roles (1)

JMSB

John Marshall Bancorp, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (136 total)

JMSB
John Marshall Bancorp, Inc.
Jun 3, 2026
Purchase(P)
Direct
179 shares at avg. $21.03$4K
JMSB
John Marshall Bancorp, Inc.
Dec 16, 2025
Award(A)
Direct
1.9K shares-
JMSB
John Marshall Bancorp, Inc.
Jul 15, 2025
Purchase(P)
Direct
712 shares at avg. $18.63$13K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
125 shares at avg. $17.02$2K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
2 shares at avg. $17.09$34.17
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
3 shares at avg. $17.05$51.135
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
1.7K shares at avg. $17.00$29K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
278 shares at avg. $17.05$5K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
156 shares at avg. $17.07$3K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
765 shares at avg. $17.01$13K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
9 shares at avg. $17.04$153.315
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
1.1K shares at avg. $17.10$19K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
100 shares at avg. $17.10$2K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
300 shares at avg. $17.12$5K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
100 shares at avg. $17.15$2K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
3 shares at avg. $17.14$51.435
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
100 shares at avg. $17.18$2K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
302 shares at avg. $17.18$5K
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
30 shares at avg. $17.33$519.9
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
9 shares at avg. $17.05$153.45
JMSB
John Marshall Bancorp, Inc.
May 5, 2025
Sale(S)
Direct
2 shares at avg. $17.08$34.16
JMSB
John Marshall Bancorp, Inc.
Apr 28, 2025
Exercise(M)
Direct
10.3K shares at avg. $11.77$121K
JMSB
John Marshall Bancorp, Inc.
Apr 28, 2025
Tax Payment(F)
Direct
2.1K shares at avg. $16.16$34K
JMSB
John Marshall Bancorp, Inc.
Dec 17, 2024
Award(A)
Direct
1.6K shares-
JMSB
John Marshall Bancorp, Inc.
Nov 20, 2024
Sale(S)
Direct
16 shares at avg. $22.69$363.04

		Type	Shares	Price		Ownership
Jun 3, 2026	JMSB John Marshall Bancorp, Inc.	Purchase(P)	179	$21.03	$3,764	Direct
Dec 16, 2025	JMSB John Marshall Bancorp, Inc.	Award(A)	1,901	-	-	Direct
Jul 15, 2025	JMSB John Marshall Bancorp, Inc.	Purchase(P)	712	$18.63	$13,265	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	125	$17.02	$2,128	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	2	$17.09	$34	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	3	$17.05	$51	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	1,733	$17.00	$29,461	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	278	$17.05	$4,741	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	156	$17.07	$2,664	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	765	$17.01	$13,013	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	9	$17.04	$153	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	1,116	$17.10	$19,084	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	100	$17.10	$1,710	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	300	$17.12	$5,136	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	100	$17.15	$1,715	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	3	$17.14	$51	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	100	$17.18	$1,718	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	302	$17.18	$5,190	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	30	$17.33	$520	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	9	$17.05	$153	Direct
May 5, 2025	JMSB John Marshall Bancorp, Inc.	Sale(S)	2	$17.08	$34	Direct
Apr 28, 2025	JMSB John Marshall Bancorp, Inc.	Exercise(M)	10,250	$11.77	$120,643	Direct
Apr 28, 2025	JMSB John Marshall Bancorp, Inc.	Tax Payment(F)	2,083	$16.16	$33,661	Direct
Dec 17, 2024	JMSB John Marshall Bancorp, Inc.	Award(A)	1,610	-	$0	Direct
Nov 20, 2024	JMSB John Marshall Bancorp, Inc.	Sale(S)	16	$22.69	$363	Direct

1-25 of 136 transactions

…

About Mahan Oscar Leland

Mahan Oscar Leland (SEC CIK 0001898828) files insider reports with the SEC as Director of John Marshall Bancorp, Inc. (JMSB).

Signal8 holds 10 ownership filings by Mahan Oscar Leland, all Form 4s, filed between Nov 19, 2024 and Jun 5, 2026. Those filings report 136 transactions, from Nov 18, 2024 to Jun 3, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Mahan Oscar Leland's filings is in RESTON, VA.

Recent filings by Mahan Oscar Leland

Jun 3, 2026: Open-market purchase of JMSB shares (Form 4, code P).
Dec 16, 2025: Grant or award of JMSB shares (Form 4, code A).
Jul 15, 2025: Open-market purchase of JMSB shares (Form 4, code P).
May 5, 2025: Open-market sales of JMSB shares (18 lines, Form 4, code S).
Apr 28, 2025: Option exercise of JMSB shares (Form 4, code M).

Other insiders filing for John Marshall Bancorp, Inc. (JMSB)

Chase Philip, Director
Kinney Jonathan Craig, Director
BERGSTROM CHRISTOPHER W, CHIEF EXECUTIVE OFFICER
Bell Kelly Jo, CHIEF OPERATING OFFICER
Foster Michael T, Director
Garg Subhash, Director

How to read Form 4 transaction codes