Christopher R. Lynch

CIK: 0002003622

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (25.0%)

Compensation grants

Other (G, F, J, C, D, …)6 (75.0%)

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

Companies & Roles (1)

NBBK

NB Bancorp, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (8 total)

NBBK
NB Bancorp, Inc.
Apr 24, 2026
Tax Payment(F)
Direct
4.2K shares at avg. $19.82$82K
NBBK
NB Bancorp, Inc.
Jan 2, 2026
Award(A)
Direct
7.7K shares-
NBBK
NB Bancorp, Inc.
Nov 10, 2025
Gift(G)
Direct
2.7K shares-
NBBK
NB Bancorp, Inc.
Oct 30, 2025
Gift(G)
Direct
600 shares-
NBBK
NB Bancorp, Inc.
Sep 16, 2025
Gift(G)
Direct
600 shares-
NBBK
NB Bancorp, Inc.
Sep 10, 2025
Gift(G)
Direct
600 shares-
NBBK
NB Bancorp, Inc.
Sep 9, 2025
Gift(G)
Direct
600 shares-
NBBK
NB Bancorp, Inc.
Apr 24, 2025
Award(A)
Direct
75.2K shares-

		Type	Shares	Price		Ownership
Apr 24, 2026	NBBK NB Bancorp, Inc.	Tax Payment(F)	4,150	$19.82	$82,253	Direct
Jan 2, 2026	NBBK NB Bancorp, Inc.	Award(A)	7,685	-	$0	Direct
Nov 10, 2025	NBBK NB Bancorp, Inc.	Gift(G)	2,725	-	-	Direct
Oct 30, 2025	NBBK NB Bancorp, Inc.	Gift(G)	600	-	-	Direct
Sep 16, 2025	NBBK NB Bancorp, Inc.	Gift(G)	600	-	-	Direct
Sep 10, 2025	NBBK NB Bancorp, Inc.	Gift(G)	600	-	-	Direct
Sep 9, 2025	NBBK NB Bancorp, Inc.	Gift(G)	600	-	-	Direct
Apr 24, 2025	NBBK NB Bancorp, Inc.	Award(A)	75,237	-	-	Direct

1-8 of 8 transactions

About Lynch Christopher R.

Lynch Christopher R. (SEC CIK 0002003622) files insider reports with the SEC as Director of NB Bancorp, Inc. (NBBK).

Signal8 holds 9 ownership filings by Lynch Christopher R., all Form 4s, filed between Apr 28, 2025 and May 15, 2026. Those filings report 8 transactions, from Apr 24, 2025 to Apr 24, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Lynch Christopher R.'s filings is in NEEDHAM, MA.

Recent filings by Lynch Christopher R.

Apr 24, 2026: Tax withholding of NBBK shares (Form 4, code F).
Jan 2, 2026: Grant or award of NBBK shares (Form 4, code A).
Nov 10, 2025: Gift of NBBK shares (Form 4, code G).
Oct 30, 2025: Gift of NBBK shares (Form 4, code G).
Sep 16, 2025: Gift of NBBK shares (Form 4, code G).

Other insiders filing for NB Bancorp, Inc. (NBBK)

CAMPANELLI JOSEPH P, President & CEO
Lapointe Jean-Pierre, SEVP and CFO
Henkin Kevin, EVP, Chief Credit Officer
Montgomery Kenneth C., Director
NOLAN JOSEPH R JR, Director
Whalen Mark, Director

How to read Form 4 transaction codes