Diego Donoso

CIK: 0001809708

Transaction Breakdown

Open Market Buys (P)2 (22.2%)

High conviction signal

Open Market Sales (S)2 (22.2%)

Position reduction

Option Exercises (M)1 (11.1%)

Derivative conversions

Awards (A)3 (33.3%)

Compensation grants

Other (G, F, J, C, D, …)1 (11.1%)

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

Companies & Roles (2)

ATMU

Atmus Filtration Technologies Inc.

Director

EAF

GRAFTECH INTERNATIONAL LTD

Director

Discretionary Trading P&L

Holdings

Transaction History (9 total)

ATMU
Atmus Filtration Technologies Inc.
May 12, 2026
Award(A)
Direct
2.6K shares-
ATMU
Atmus Filtration Technologies Inc.
Nov 18, 2025
Other(J)
Direct
20 shares-
ATMU
Atmus Filtration Technologies Inc.
Nov 13, 2025
Sale(S)
Direct
20 shares at avg. $48.84$976.8
ATMU
Atmus Filtration Technologies Inc.
Sep 5, 2025
Purchase(P)
Direct
15 shares at avg. $45.81$687.15
ATMU
Atmus Filtration Technologies Inc.
Aug 13, 2025
Purchase(P)
Direct
25 shares at avg. $45.00$1K
ATMU
Atmus Filtration Technologies Inc.
May 20, 2025
Award(A)
Direct
3.9K shares-
ATMU
Atmus Filtration Technologies Inc.
Apr 2, 2025
Sale(S)
Direct
40 shares at avg. $37.79$2K
EAF
GRAFTECH INTERNATIONAL LTD
Mar 31, 2025
Award(A)
Deferred Share Units
Direct
16.5K shares-
EAF
GRAFTECH INTERNATIONAL LTD
Nov 9, 2024
Exercise(M)
Direct
56.5K shares-

		Type	Shares	Price		Ownership
May 12, 2026	ATMU Atmus Filtration Technologies Inc.	Award(A)	2,619	-	$0	Direct
Nov 18, 2025	ATMU Atmus Filtration Technologies Inc.	Other(J)	20	-	-	Direct
Nov 13, 2025	ATMU Atmus Filtration Technologies Inc.	Sale(S)	20	$48.84	$977	Direct
Sep 5, 2025	ATMU Atmus Filtration Technologies Inc.	Purchase(P)	15	$45.81	$687	Direct
Aug 13, 2025	ATMU Atmus Filtration Technologies Inc.	Purchase(P)	25	$45.00	$1,125	Direct
May 20, 2025	ATMU Atmus Filtration Technologies Inc.	Award(A)	3,886	-	-	Direct
Apr 2, 2025	ATMU Atmus Filtration Technologies Inc.	Sale(S)	40	$37.79	$1,512	Direct
Mar 31, 2025	EAF GRAFTECH INTERNATIONAL LTD	Award(A) Deferred Share Units	16,523	-	-	Direct
Nov 9, 2024	EAF GRAFTECH INTERNATIONAL LTD	Exercise(M)	56,497	-	$0	Direct

1-9 of 9 transactions

About Donoso Diego

Donoso Diego (SEC CIK 0001809708) files insider reports with the SEC as Director of Atmus Filtration Technologies Inc. (ATMU) and Director of GRAFTECH INTERNATIONAL LTD (EAF).

Signal8 holds 5 ownership filings by Donoso Diego, all Form 4s, filed between Nov 12, 2024 and May 13, 2026. Those filings report 9 transactions, from Nov 9, 2024 to May 12, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Donoso Diego's filings is in BROOKLYN HEIGHTS, OH.

Recent filings by Donoso Diego

May 12, 2026: Grant or award of ATMU shares (Form 4, code A).
Nov 18, 2025: Other transaction of ATMU shares (Form 4, code J).
Nov 13, 2025: Open-market sale of ATMU shares (Form 4, code S).
Sep 5, 2025: Open-market purchase of ATMU shares (Form 4, code P).
Aug 13, 2025: Open-market purchase of ATMU shares (Form 4, code P).

Other insiders filing for Atmus Filtration Technologies Inc. (ATMU)

Swan Renee, Chief People Officer
Macadam Stephen E., Director
Masters Charles, Senior Vice President
Kienzler Jack, Chief Financial Officer
Disher Stephanie, Chief Executive Officer
Carpenter Kevin N, SVP-Chief Supply Chain Officer

How to read Form 4 transaction codes