Mark D. Millett

CIK: 0001195949

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)6 (31.6%)

Compensation grants

Other (G, F, J, C, D, …)13 (68.4%)

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

Companies & Roles (1)

STLD

STEEL DYNAMICS INC

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (19 total)

STLD
STEEL DYNAMICS INC
Jul 28, 2026
Gift(G)
Direct
300 shares-
STLD
STEEL DYNAMICS INC
Mar 13, 2026
Award(A)
Direct
46.4K shares-
STLD
STEEL DYNAMICS INC
Mar 13, 2026
Tax Payment(F)
Direct
20.6K shares at avg. $182.19$3.8M
STLD
STEEL DYNAMICS INC
Feb 24, 2026
Tax Payment(F)
Direct
5.2K shares at avg. $196.01$1.0M
STLD
STEEL DYNAMICS INC
Feb 23, 2026
Tax Payment(F)
Direct
2.9K shares at avg. $193.39$566K
STLD
STEEL DYNAMICS INC
Feb 23, 2026
Tax Payment(F)
Direct
2.9K shares at avg. $193.39$567K
STLD
STEEL DYNAMICS INC
Feb 20, 2026
Award(A)
Direct
12.7K shares-
STLD
STEEL DYNAMICS INC
Nov 21, 2025
Tax Payment(F)
Direct
253 shares at avg. $153.11$39K
STLD
STEEL DYNAMICS INC
Nov 21, 2025
Award(A)
Direct
569 shares-
STLD
STEEL DYNAMICS INC
May 19, 2025
Gift(G)
Direct
37K shares-
STLD
STEEL DYNAMICS INC
May 9, 2025
Gift(G)
Direct
500 shares-
STLD
STEEL DYNAMICS INC
Mar 14, 2025
Award(A)
Direct
81.2K shares-
STLD
STEEL DYNAMICS INC
Mar 14, 2025
Tax Payment(F)
Direct
36.1K shares at avg. $119.40$4.3M
STLD
STEEL DYNAMICS INC
Feb 25, 2025
Tax Payment(F)
Direct
3.9K shares at avg. $133.15$523K
STLD
STEEL DYNAMICS INC
Feb 24, 2025
Tax Payment(F)
Direct
5.2K shares at avg. $130.71$674K
STLD
STEEL DYNAMICS INC
Feb 22, 2025
Tax Payment(F)
Direct
2.9K shares at avg. $130.71$384K
STLD
STEEL DYNAMICS INC
Feb 20, 2025
Award(A)
Direct
17.6K shares-
STLD
STEEL DYNAMICS INC
Nov 21, 2024
Tax Payment(F)
Direct
268 shares at avg. $144.04$39K
STLD
STEEL DYNAMICS INC
Nov 21, 2024
Award(A)
Direct
604 shares-

		Type	Shares	Price		Ownership
Jul 28, 2026	STLD STEEL DYNAMICS INC	Gift(G)	300	-	$0	Direct
Mar 13, 2026	STLD STEEL DYNAMICS INC	Award(A)	46,422	-	$0	Direct
Mar 13, 2026	STLD STEEL DYNAMICS INC	Tax Payment(F)	20,625	$182.19	$3,757,669	Direct
Feb 24, 2026	STLD STEEL DYNAMICS INC	Tax Payment(F)	5,153	$196.01	$1,010,040	Direct
Feb 23, 2026	STLD STEEL DYNAMICS INC	Tax Payment(F)	2,928	$193.39	$566,246	Direct
Feb 23, 2026	STLD STEEL DYNAMICS INC	Tax Payment(F)	2,934	$193.39	$567,406	Direct
Feb 20, 2026	STLD STEEL DYNAMICS INC	Award(A)	12,662	-	$0	Direct
Nov 21, 2025	STLD STEEL DYNAMICS INC	Tax Payment(F)	253	$153.11	$38,737	Direct
Nov 21, 2025	STLD STEEL DYNAMICS INC	Award(A)	569	-	-	Direct
May 19, 2025	STLD STEEL DYNAMICS INC	Gift(G)	37,000	-	-	Direct
May 9, 2025	STLD STEEL DYNAMICS INC	Gift(G)	500	-	-	Direct
Mar 14, 2025	STLD STEEL DYNAMICS INC	Award(A)	81,171	-	-	Direct
Mar 14, 2025	STLD STEEL DYNAMICS INC	Tax Payment(F)	36,104	$119.40	$4,310,818	Direct
Feb 25, 2025	STLD STEEL DYNAMICS INC	Tax Payment(F)	3,931	$133.15	$523,413	Direct
Feb 24, 2025	STLD STEEL DYNAMICS INC	Tax Payment(F)	5,159	$130.71	$674,333	Direct
Feb 22, 2025	STLD STEEL DYNAMICS INC	Tax Payment(F)	2,937	$130.71	$383,895	Direct
Feb 20, 2025	STLD STEEL DYNAMICS INC	Award(A)	17,645	-	-	Direct
Nov 21, 2024	STLD STEEL DYNAMICS INC	Tax Payment(F)	268	$144.04	$38,603	Direct
Nov 21, 2024	STLD STEEL DYNAMICS INC	Award(A)	604	-	$0	Direct

1-19 of 19 transactions

About MILLETT MARK D

MILLETT MARK D (SEC CIK 0001195949) files insider reports with the SEC as Chairman and CEO of STEEL DYNAMICS INC (STLD).

Signal8 holds 11 ownership filings by MILLETT MARK D, all Form 4s, filed between Nov 22, 2024 and Jul 28, 2026. Those filings report 19 transactions, from Nov 21, 2024 to Jul 28, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on MILLETT MARK D's filings is in FORT WAYNE, IN.

Recent filings by MILLETT MARK D

Jul 28, 2026: Gift of STLD shares (Form 4, code G).
Mar 13, 2026: Grant or award of STLD shares (Form 4, code A).
Mar 13, 2026: Tax withholding of STLD shares (Form 4, code F).
Feb 24, 2026: Tax withholding of STLD shares (Form 4, code F).
Feb 23, 2026: Tax withholdings of STLD shares (2 lines, Form 4, code F).

Other insiders filing for STEEL DYNAMICS INC (STLD)

How to read Form 4 transaction codes