Douglas T. Dietrich

CIK: 0001408736

Transaction Breakdown

Open Market Buys (P)1 (3.2%)

High conviction signal

Open Market Sales (S)1 (3.2%)

Position reduction

Option Exercises (M)8 (25.8%)

Derivative conversions

Awards (A)14 (45.2%)

Compensation grants

Other (G, F, J, C, D, …)7 (22.6%)

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

Companies & Roles (2)

KMT

KENNAMETAL INC

Director

MTX

MINERALS TECHNOLOGIES INC

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (31 total)

KMT
KENNAMETAL INC
Aug 25, 2026
Award(A)
Stock Credits
Direct
982 shares at avg. $29.27-
KMT
KENNAMETAL INC
Aug 15, 2026
Award(A)
Stock Credits
Direct
5K shares-
KMT
KENNAMETAL INC
May 26, 2026
Award(A)
Stock Credits
Direct
697 shares at avg. $36.94-
MTX
MINERALS TECHNOLOGIES INC
May 14, 2026
Sale(S)
Direct
21.6K shares at avg. $81.53$1.8M
MTX
MINERALS TECHNOLOGIES INC
May 14, 2026
Exercise(M)
Direct
21.6K shares at avg. $78.03$1.7M
KMT
KENNAMETAL INC
Feb 24, 2026
Award(A)
Stock Credits
Direct
642 shares at avg. $40.10-
KMT
KENNAMETAL INC
Jan 30, 2026
Tax Payment(F)
Direct
25 shares at avg. $34.39$859.75
KMT
KENNAMETAL INC
Jan 30, 2026
Exercise(M)
Direct
841 shares at avg. $34.39$29K
MTX
MINERALS TECHNOLOGIES INC
Jan 26, 2026
Exercise(M)
Direct
11.1K shares-
MTX
MINERALS TECHNOLOGIES INC
Jan 26, 2026
Tax Payment(F)
Direct
6.2K shares at avg. $68.89$424K
MTX
MINERALS TECHNOLOGIES INC
Jan 23, 2026
Exercise(M)
Direct
11K shares-
MTX
MINERALS TECHNOLOGIES INC
Jan 23, 2026
Tax Payment(F)
Direct
6.1K shares at avg. $68.77$419K
MTX
MINERALS TECHNOLOGIES INC
Jan 21, 2026
Exercise(M)
Direct
10K shares-
MTX
MINERALS TECHNOLOGIES INC
Jan 21, 2026
Tax Payment(F)
Direct
5.6K shares at avg. $66.92$377K
MTX
MINERALS TECHNOLOGIES INC
Jan 20, 2026
Award(A)
Employee Stock Option (Right to Buy)
Direct
33.5K shares-
MTX
MINERALS TECHNOLOGIES INC
Jan 20, 2026
Award(A)
Deferred Restricted Stock Units (DRSUs)
Direct
39K shares-
KMT
KENNAMETAL INC
Nov 24, 2025
Award(A)
Stock Credits
Direct
893 shares at avg. $27.12-
KMT
KENNAMETAL INC
Aug 26, 2025
Award(A)
Stock Credits
Direct
991 shares at avg. $21.44-
KMT
KENNAMETAL INC
Aug 15, 2025
Award(A)
Stock Credits
Direct
6.9K shares-
KMT
KENNAMETAL INC
May 27, 2025
Award(A)
Stock Credits
Direct
977 shares at avg. $21.74-
MTX
MINERALS TECHNOLOGIES INC
Apr 30, 2025
Purchase(P)
Direct
2K shares at avg. $51.56$103K
KMT
KENNAMETAL INC
Feb 25, 2025
Award(A)
Stock Credits
Direct
635 shares at avg. $22.30-
KMT
KENNAMETAL INC
Feb 1, 2025
Award(A)
Restricted Stock Units
Direct
2.5K shares-
MTX
MINERALS TECHNOLOGIES INC
Jan 27, 2025
Tax Payment(F)
Direct
5.3K shares at avg. $76.19$402K
MTX
MINERALS TECHNOLOGIES INC
Jan 27, 2025
Exercise(M)
Direct
9.5K shares-

		Type	Shares	Price		Ownership
Aug 25, 2026	KMT KENNAMETAL INC	Award(A) Stock Credits	982	$29.27	-	Direct
Aug 15, 2026	KMT KENNAMETAL INC	Award(A) Stock Credits	4,965	-	-	Direct
May 26, 2026	KMT KENNAMETAL INC	Award(A) Stock Credits	697	$36.94	-	Direct
May 14, 2026	MTX MINERALS TECHNOLOGIES INC	Sale(S)	21,568	$81.53	$1,758,422	Direct
May 14, 2026	MTX MINERALS TECHNOLOGIES INC	Exercise(M)	21,568	$78.03	$1,682,843	Direct
Feb 24, 2026	KMT KENNAMETAL INC	Award(A) Stock Credits	642	$40.10	-	Direct
Jan 30, 2026	KMT KENNAMETAL INC	Tax Payment(F)	25	$34.39	$860	Direct
Jan 30, 2026	KMT KENNAMETAL INC	Exercise(M)	841	$34.39	$28,922	Direct
Jan 26, 2026	MTX MINERALS TECHNOLOGIES INC	Exercise(M)	11,123	-	$0	Direct
Jan 26, 2026	MTX MINERALS TECHNOLOGIES INC	Tax Payment(F)	6,152	$68.89	$423,811	Direct
Jan 23, 2026	MTX MINERALS TECHNOLOGIES INC	Exercise(M)	11,016	-	$0	Direct
Jan 23, 2026	MTX MINERALS TECHNOLOGIES INC	Tax Payment(F)	6,092	$68.77	$418,947	Direct
Jan 21, 2026	MTX MINERALS TECHNOLOGIES INC	Exercise(M)	10,033	-	$0	Direct
Jan 21, 2026	MTX MINERALS TECHNOLOGIES INC	Tax Payment(F)	5,630	$66.92	$376,760	Direct
Jan 20, 2026	MTX MINERALS TECHNOLOGIES INC	Award(A) Employee Stock Option (Right to Buy)	33,494	-	-	Direct
Jan 20, 2026	MTX MINERALS TECHNOLOGIES INC	Award(A) Deferred Restricted Stock Units (DRSUs)	39,000	-	-	Direct
Nov 24, 2025	KMT KENNAMETAL INC	Award(A) Stock Credits	893	$27.12	-	Direct
Aug 26, 2025	KMT KENNAMETAL INC	Award(A) Stock Credits	991	$21.44	-	Direct
Aug 15, 2025	KMT KENNAMETAL INC	Award(A) Stock Credits	6,898	-	-	Direct
May 27, 2025	KMT KENNAMETAL INC	Award(A) Stock Credits	977	$21.74	-	Direct
Apr 30, 2025	MTX MINERALS TECHNOLOGIES INC	Purchase(P)	2,000	$51.56	$103,120	Direct
Feb 25, 2025	KMT KENNAMETAL INC	Award(A) Stock Credits	635	$22.30	-	Direct
Feb 1, 2025	KMT KENNAMETAL INC	Award(A) Restricted Stock Units	2,523	-	-	Direct
Jan 27, 2025	MTX MINERALS TECHNOLOGIES INC	Tax Payment(F)	5,281	$76.19	$402,359	Direct
Jan 27, 2025	MTX MINERALS TECHNOLOGIES INC	Exercise(M)	9,549	-	$0	Direct

1-25 of 31 transactions

About DIETRICH DOUGLAS T

DIETRICH DOUGLAS T (SEC CIK 0001408736) files insider reports with the SEC as Director of KENNAMETAL INC (KMT) and CHAIRMAN AND CEO of MINERALS TECHNOLOGIES INC (MTX).

Signal8 holds 21 ownership filings by DIETRICH DOUGLAS T (1 Form 3, 20 Form 4), filed between Jan 23, 2025 and Aug 26, 2026. Those filings report 31 transactions, from Jan 21, 2025 to Aug 25, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on DIETRICH DOUGLAS T's filings is in NEW YORK, NY.

Recent filings by DIETRICH DOUGLAS T

Aug 25, 2026: Grant or award of KMT derivative securities (Form 4, code A).
Aug 15, 2026: Grant or award of KMT derivative securities (Form 4, code A).
May 26, 2026: Grant or award of KMT derivative securities (Form 4, code A).
May 14, 2026: Open-market sale of MTX shares (Form 4, code S).
May 14, 2026: Option exercise of MTX shares (Form 4, code M).

Other insiders filing for KENNAMETAL INC (KMT)

Witt John Wayne, Vice President
Watson Patrick S, Vice President
Reilly Carlonda R., Vice President
Keating Michelle R, Vice President
Hamadi Faisal, Vice President
Chowbey Sanjay, President and CEO

How to read Form 4 transaction codes