Donald A. McCunniff

CIK: 0001355849

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)1 (14.3%)

Position reduction

Option Exercises (M)1 (14.3%)

Derivative conversions

Awards (A)3 (42.9%)

Compensation grants

Other (G, F, J, C, D, …)2 (28.6%)

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

Companies & Roles (1)

MLM

MARTIN MARIETTA MATERIALS INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (7 total)

MLM
MARTIN MARIETTA MATERIALS INC
Mar 1, 2026
Award(A)
Direct
3K shares-
MLM
MARTIN MARIETTA MATERIALS INC
Feb 23, 2026
Tax Payment(F)
Direct
192 shares at avg. $683.60$131K
MLM
MARTIN MARIETTA MATERIALS INC
Feb 20, 2026
Award(A)
Direct
1.3K shares-
MLM
MARTIN MARIETTA MATERIALS INC
Dec 16, 2025
Tax Payment(F)
Direct
50 shares at avg. $629.49$31K
MLM
MARTIN MARIETTA MATERIALS INC
Mar 5, 2025
Exercise(M)
Direct
1.3K shares at avg. $154.58$206K
MLM
MARTIN MARIETTA MATERIALS INC
Mar 5, 2025
Sale(S)
Direct
1.3K shares at avg. $475.00$633K
MLM
MARTIN MARIETTA MATERIALS INC
Feb 21, 2025
Award(A)
Direct
1.5K shares-

		Type	Shares	Price		Ownership
Mar 1, 2026	MLM MARTIN MARIETTA MATERIALS INC	Award(A)	2,960	-	$0	Direct
Feb 23, 2026	MLM MARTIN MARIETTA MATERIALS INC	Tax Payment(F)	192	$683.60	$131,251	Direct
Feb 20, 2026	MLM MARTIN MARIETTA MATERIALS INC	Award(A)	1,277	-	$0	Direct
Dec 16, 2025	MLM MARTIN MARIETTA MATERIALS INC	Tax Payment(F)	50	$629.49	$31,475	Direct
Mar 5, 2025	MLM MARTIN MARIETTA MATERIALS INC	Exercise(M)	1,332	$154.58	$205,901	Direct
Mar 5, 2025	MLM MARTIN MARIETTA MATERIALS INC	Sale(S)	1,332	$475.00	$632,700	Direct
Feb 21, 2025	MLM MARTIN MARIETTA MATERIALS INC	Award(A)	1,543	-	-	Direct

1-7 of 7 transactions

About McCunniff Donald A.

McCunniff Donald A. (SEC CIK 0001355849) files insider reports with the SEC as EVP and CHRO of MARTIN MARIETTA MATERIALS INC (MLM).

Signal8 holds 7 ownership filings by McCunniff Donald A. (1 Form 3, 6 Form 4), filed between Sep 4, 2024 and Mar 3, 2026. Those filings report 7 transactions, from Feb 21, 2025 to Mar 1, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on McCunniff Donald A.'s filings is in RALEIGH, NC.

Recent filings by McCunniff Donald A.

Mar 1, 2026: Grant or award of MLM shares (Form 4, code A).
Feb 23, 2026: Tax withholding of MLM shares (Form 4, code F).
Feb 20, 2026: Grant or award of MLM shares (Form 4, code A).
Dec 16, 2025: Tax withholding of MLM shares (Form 4, code F).
Mar 5, 2025: Option exercise of MLM shares (Form 4, code M).

Other insiders filing for MARTIN MARIETTA MATERIALS INC (MLM)

Petro Michael J, SVP and CFO
WAJSGRAS DAVID C, Director
Pike Thomas, Director
LYONS MARTIN J, Director
Niemann Philipp, Director
LNA Holding SRL, 10% Owner

How to read Form 4 transaction codes