Russell Barton

CIK: 0001867418

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)8 (80.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (20.0%)

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)

ABOS

Acumen Pharmaceuticals, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (10 total)

ABOS
Acumen Pharmaceuticals, Inc.
Jan 22, 2026
Sale(S)
Direct
462 shares at avg. $1.84$850.08
ABOS
Acumen Pharmaceuticals, Inc.
Jan 21, 2026
Sale(S)
Direct
2.3K shares at avg. $1.81$4K
ABOS
Acumen Pharmaceuticals, Inc.
Jan 16, 2026
Award(A)
Direct
84.6K shares-
ABOS
Acumen Pharmaceuticals, Inc.
Jan 8, 2026
Sale(S)
Direct
3.5K shares at avg. $1.86$7K
ABOS
Acumen Pharmaceuticals, Inc.
Jan 7, 2026
Sale(S)
Direct
1.7K shares at avg. $1.99$3K
ABOS
Acumen Pharmaceuticals, Inc.
Jan 6, 2026
Sale(S)
Direct
3.6K shares at avg. $1.97$7K
ABOS
Acumen Pharmaceuticals, Inc.
Jan 5, 2026
Sale(S)
Direct
4K shares at avg. $1.96$8K
ABOS
Acumen Pharmaceuticals, Inc.
Jan 21, 2025
Sale(S)
Direct
2.9K shares at avg. $1.61$5K
ABOS
Acumen Pharmaceuticals, Inc.
Jan 6, 2025
Award(A)
Direct
49.8K shares-
ABOS
Acumen Pharmaceuticals, Inc.
Jan 3, 2025
Sale(S)
Direct
7.6K shares at avg. $1.86$14K

		Type	Shares	Price		Ownership
Jan 22, 2026	ABOS Acumen Pharmaceuticals, Inc.	Sale(S)	462	$1.84	$850	Direct
Jan 21, 2026	ABOS Acumen Pharmaceuticals, Inc.	Sale(S)	2,315	$1.81	$4,181	Direct
Jan 16, 2026	ABOS Acumen Pharmaceuticals, Inc.	Award(A)	84,600	-	$0	Direct
Jan 8, 2026	ABOS Acumen Pharmaceuticals, Inc.	Sale(S)	3,530	$1.86	$6,562	Direct
Jan 7, 2026	ABOS Acumen Pharmaceuticals, Inc.	Sale(S)	1,700	$1.99	$3,378	Direct
Jan 6, 2026	ABOS Acumen Pharmaceuticals, Inc.	Sale(S)	3,618	$1.97	$7,114	Direct
Jan 5, 2026	ABOS Acumen Pharmaceuticals, Inc.	Sale(S)	4,000	$1.96	$7,832	Direct
Jan 21, 2025	ABOS Acumen Pharmaceuticals, Inc.	Sale(S)	2,914	$1.61	$4,692	Direct
Jan 6, 2025	ABOS Acumen Pharmaceuticals, Inc.	Award(A)	49,800	-	$0	Direct
Jan 3, 2025	ABOS Acumen Pharmaceuticals, Inc.	Sale(S)	7,636	$1.86	$14,225	Direct

1-10 of 10 transactions

About Barton Russell

Barton Russell (SEC CIK 0001867418) files insider reports with the SEC as Chief Operating Officer of Acumen Pharmaceuticals, Inc. (ABOS).

Signal8 holds 6 ownership filings by Barton Russell, all Form 4s, filed between Jan 7, 2025 and Jan 23, 2026. Those filings report 10 transactions, from Jan 3, 2025 to Jan 22, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Barton Russell's filings is in NEWTON, MA.

Recent filings by Barton Russell

Jan 22, 2026: Open-market sale of ABOS shares (Form 4, code S).
Jan 21, 2026: Open-market sale of ABOS shares (Form 4, code S).
Jan 16, 2026: Grant or award of ABOS shares (Form 4, code A).
Jan 8, 2026: Open-market sale of ABOS shares (Form 4, code S).
Jan 7, 2026: Open-market sale of ABOS shares (Form 4, code S).

Other insiders filing for Acumen Pharmaceuticals, Inc. (ABOS)

How to read Form 4 transaction codes