David Montgomery

CIK: 0001272798

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (7.3%)

Position reduction

Option Exercises (M)17 (41.5%)

Derivative conversions

Awards (A)4 (9.8%)

Compensation grants

Other (G, F, J, C, D, …)17 (41.5%)

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

Companies & Roles (1)

SGI

SOMNIGROUP INTERNATIONAL INC.

Officer

Discretionary Trading P&L

Holdings

Transaction History (41 total)

SGI
SOMNIGROUP INTERNATIONAL INC.
Feb 26, 2026
Award(A)
Performance Restricted Stock Units
Direct
9K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Tax Payment(F)
Direct
1.2K shares at avg. $88.74$108K
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Exercise(M)
Direct
3.6K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Tax Payment(F)
Direct
1.7K shares at avg. $88.74$149K
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Exercise(M)
Direct
2.6K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Tax Payment(F)
Direct
1.2K shares at avg. $88.74$109K
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Exercise(M)
Direct
2.2K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Tax Payment(F)
Direct
1.1K shares at avg. $88.74$94K
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Exercise(M)
Direct
3K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Tax Payment(F)
Direct
1.4K shares at avg. $88.74$124K
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Exercise(M)
Direct
9.6K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Tax Payment(F)
Direct
4.5K shares at avg. $88.74$401K
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Exercise(M)
Direct
4.2K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Tax Payment(F)
Direct
2K shares at avg. $88.74$175K
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Award(A)
Restricted Stock Units
Direct
5.6K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Jan 2, 2026
Exercise(M)
Direct
2.6K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Nov 13, 2025
Gift(G)
Direct
40K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Jun 11, 2025
Exercise(M)
Direct
37.6K shares at avg. $15.61$587K
SGI
SOMNIGROUP INTERNATIONAL INC.
Jun 11, 2025
Exercise(M)
Direct
63.4K shares at avg. $17.38$1.1M
SGI
SOMNIGROUP INTERNATIONAL INC.
Jun 11, 2025
Sale(S)
Direct
30.2K shares at avg. $65.69$2.0M
SGI
SOMNIGROUP INTERNATIONAL INC.
Jun 11, 2025
Sale(S)
Direct
45.8K shares at avg. $65.67$3.0M
SGI
SOMNIGROUP INTERNATIONAL INC.
Mar 13, 2025
Gift(G)
Direct
17K shares-
SGI
SOMNIGROUP INTERNATIONAL INC.
Mar 3, 2025
Exercise(M)
Direct
50K shares at avg. $17.38$869K
SGI
SOMNIGROUP INTERNATIONAL INC.
Mar 3, 2025
Sale(S)
Direct
32.8K shares at avg. $62.88$2.1M
SGI
SOMNIGROUP INTERNATIONAL INC.
Feb 28, 2025
Award(A)
Performance Restricted Stock Units
Direct
12.6K shares-

		Type	Shares	Price		Ownership
Feb 26, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Award(A) Performance Restricted Stock Units	9,015	-	-	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Tax Payment(F)	1,219	$88.74	$108,174	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Exercise(M)	3,579	-	$0	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Tax Payment(F)	1,683	$88.74	$149,349	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Exercise(M)	2,609	-	$0	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Tax Payment(F)	1,227	$88.74	$108,884	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Exercise(M)	2,243	-	$0	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Tax Payment(F)	1,055	$88.74	$93,621	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Exercise(M)	2,961	-	$0	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Tax Payment(F)	1,392	$88.74	$123,526	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Exercise(M)	9,619	-	$0	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Tax Payment(F)	4,521	$88.74	$401,194	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Exercise(M)	4,198	-	$0	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Tax Payment(F)	1,974	$88.74	$175,173	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Award(A) Restricted Stock Units	5,635	-	-	Direct
Jan 2, 2026	SGI SOMNIGROUP INTERNATIONAL INC.	Exercise(M)	2,593	-	$0	Direct
Nov 13, 2025	SGI SOMNIGROUP INTERNATIONAL INC.	Gift(G)	40,000	-	-	Direct
Jun 11, 2025	SGI SOMNIGROUP INTERNATIONAL INC.	Exercise(M)	37,624	$15.61	$587,311	Direct
Jun 11, 2025	SGI SOMNIGROUP INTERNATIONAL INC.	Exercise(M)	63,384	$17.38	$1,101,614	Direct
Jun 11, 2025	SGI SOMNIGROUP INTERNATIONAL INC.	Sale(S)	30,182	$65.69	$1,982,589	Direct
Jun 11, 2025	SGI SOMNIGROUP INTERNATIONAL INC.	Sale(S)	45,826	$65.67	$3,009,398	Direct
Mar 13, 2025	SGI SOMNIGROUP INTERNATIONAL INC.	Gift(G)	17,000	-	-	Direct
Mar 3, 2025	SGI SOMNIGROUP INTERNATIONAL INC.	Exercise(M)	50,000	$17.38	$869,000	Direct
Mar 3, 2025	SGI SOMNIGROUP INTERNATIONAL INC.	Sale(S)	32,785	$62.88	$2,061,403	Direct
Feb 28, 2025	SGI SOMNIGROUP INTERNATIONAL INC.	Award(A) Performance Restricted Stock Units	12,592	-	-	Direct

1-25 of 41 transactions

About MONTGOMERY DAVID

MONTGOMERY DAVID (SEC CIK 0001272798) files insider reports with the SEC as EVP Global Business Strategy of SOMNIGROUP INTERNATIONAL INC. (SGI).

Signal8 holds 8 ownership filings by MONTGOMERY DAVID, all Form 4s, filed between Dec 9, 2024 and Mar 2, 2026. Those filings report 41 transactions, from Dec 6, 2024 to Feb 26, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on MONTGOMERY DAVID's filings is in DALLAS, TX.

Recent filings by MONTGOMERY DAVID

Feb 26, 2026: Grant or award of SGI derivative securities (Form 4, code A).
Jan 2, 2026: Tax withholding of SGI shares (Form 4, code F).
Jan 2, 2026: Option exercise of SGI shares (Form 4, code M).
Jan 2, 2026: Tax withholding of SGI shares (Form 4, code F).
Jan 2, 2026: Option exercise of SGI shares (Form 4, code M).

Other insiders filing for SOMNIGROUP INTERNATIONAL INC. (SGI)

HAGALE JAMES TYSON, President - Leggett & Platt
GLASSMAN KARL G, CEO - Leggett & Platt
THOMPSON SCOTT L, CEO & PRESIDENT
Rusing Steven H, President & CEO Mattress Firm
NEU RICHARD W, Director
Madden Meredith Siegfried, Director

How to read Form 4 transaction codes