Brian D. Frantz

CIK: 0001496943

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)3 (60.0%)

Compensation grants

Other (G, F, J, C, D, …)2 (40.0%)

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

Companies & Roles (2)

YSS

Yellowstone Midco Holdings II, LLC

Officer

SUM

Summit Materials, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (5 total)

YSS
Yellowstone Midco Holdings II, LLC
Jan 30, 2026
Award(A)
Direct
10.3K shares-
SUM
Summit Materials, Inc.
Feb 10, 2025
Disposition(D)
Direct
11.4K shares at avg. $52.50$599K
SUM
Summit Materials, Inc.
Jan 16, 2025
Award(A)
Direct
1.3K shares-
SUM
Summit Materials, Inc.
Jan 16, 2025
Tax Payment(F)
Direct
460 shares at avg. $52.19$24K
SUM
Summit Materials, Inc.
Jan 15, 2025
Award(A)
Restricted Stock Units
Direct
4.5K shares-

		Type	Shares	Price		Ownership
Jan 30, 2026	YSS Yellowstone Midco Holdings II, LLC	Award(A)	10,294	-	$0	Direct
Feb 10, 2025	SUM Summit Materials, Inc.	Disposition(D)	11,402	$52.50	$598,605	Direct
Jan 16, 2025	SUM Summit Materials, Inc.	Award(A)	1,348	-	$0	Direct
Jan 16, 2025	SUM Summit Materials, Inc.	Tax Payment(F)	460	$52.19	$24,007	Direct
Jan 15, 2025	SUM Summit Materials, Inc.	Award(A) Restricted Stock Units	4,460	-	-	Direct

1-5 of 5 transactions

About Frantz Brian D

Frantz Brian D (SEC CIK 0001496943) files insider reports with the SEC as Chief Accounting Officer of Yellowstone Midco Holdings II, LLC (YSS) and Officer of Summit Materials, Inc. (SUM).

Signal8 holds 4 ownership filings by Frantz Brian D (1 Form 3, 3 Form 4), filed between Jan 17, 2025 and Feb 3, 2026. Those filings report 5 transactions, from Jan 15, 2025 to Jan 30, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Frantz Brian D's filings is in GREENWOOD VILLAGE, CO.

Recent filings by Frantz Brian D

Jan 30, 2026: Grant or award of YSS shares (Form 4, code A).
Feb 10, 2025: Disposition to issuer transaction of SUM shares (Form 4, code D).
Jan 16, 2025: Grant or award of SUM shares (Form 4, code A).
Jan 16, 2025: Tax withholding of SUM shares (Form 4, code F).
Jan 15, 2025: Grant or award of SUM derivative securities (Form 4, code A).

Other insiders filing for Yellowstone Midco Holdings II, LLC (YSS)

BlackRock Portfolio Management LLC, 10% Owner
AEROEQUITY GP, LLC, 10% Owner
Davidson Janine, Director
Wallinger Dirk, Chief Executive Officer
Erwin Tami A., Director
Messerle Kevin, Chief Financial Officer

How to read Form 4 transaction codes