Latest filings (excl ownership)
8-K
Regulation FD Disclosure
13 Mar 24
10-K
2023 FY
Annual report
15 Feb 24
8-K
Summit Materials, Inc. Reports Fourth Quarter and Full Year 2023 Results
14 Feb 24
8-K/A
Independent Auditors’ Report
12 Feb 24
8-K
Summit Materials Completes Combination with Argos USA
12 Jan 24
8-K
Summit Materials Shareholders Approve Combination with Argos USA
11 Jan 24
8-K
Other Events
28 Dec 23
8-K
Entry into a Material Definitive Agreement
14 Dec 23
DEFM14A
Proxy related to merger
12 Dec 23
UPLOAD
Letter from SEC
7 Dec 23
8-K
Other Events
1 Dec 23
PRER14A
Preliminary revised proxy
29 Nov 23
CORRESP
Correspondence with SEC
29 Nov 23
DEFA14A
Additional proxy soliciting materials
27 Nov 23
8-K
Summit Materials Announces intention to offer $800 million of senior notes
27 Nov 23
UPLOAD
Letter from SEC
27 Nov 23
PRER14A
Preliminary revised proxy
13 Nov 23
CORRESP
Correspondence with SEC
13 Nov 23
UPLOAD
Letter from SEC
8 Nov 23
DEFA14A
Additional proxy soliciting materials
2 Nov 23
10-Q
2023 Q3
Quarterly report
2 Nov 23
8-K
Summit Materials, Inc. Reports Third Quarter 2023 Results
1 Nov 23
DEFA14A
Additional proxy soliciting materials
24 Oct 23
DEFA14A
Additional proxy soliciting materials
20 Oct 23
DEFA14A
Additional proxy soliciting materials
19 Oct 23
DEFA14A
Additional proxy soliciting materials
19 Oct 23
PREM14A
Preliminary proxy related to merger
18 Oct 23
DEFA14A
Additional proxy soliciting materials
13 Sep 23
8-K
Entry into a Material Definitive Agreement
13 Sep 23
DEFA14A
Additional proxy soliciting materials
8 Sep 23
8-K
Entry into a Material Definitive Agreement
8 Sep 23
DEFA14A
Additional proxy soliciting materials
7 Sep 23
DEFA14A
Additional proxy soliciting materials
7 Sep 23
8-K
Creating a Materials-Led Enterprise with National Scale
7 Sep 23
8-K
Summit Materials Announces Significant Step to Streamline Company Structure
22 Aug 23
10-Q
2023 Q2
Quarterly report
3 Aug 23
8-K
Summit Materials, Inc. Reports Second Quarter 2023 Results
2 Aug 23
8-K
Mine Safety - Reporting of Shutdowns and Patterns of Violations
23 Jun 23
8-K
Submission of Matters to a Vote of Security Holders
25 May 23
10-Q
2023 Q1
Quarterly report
4 May 23
Latest ownership filings
4
Irene Moshouris
8 Mar 24
4
JORGE MARIO VELASQUEZ
8 Mar 24
4
HOWARD L LANCE
8 Mar 24
4
Craig Scott Anderson
8 Mar 24
4
David Loomes
8 Mar 24
4
Anne M Cooney
8 Mar 24
4
Susan A Ellerbusch
8 Mar 24
4
JOSEPH S CANTIE
8 Mar 24
4
Brian D Frantz
8 Mar 24
4
Karli S. Anderson
8 Mar 24
4
Jason Kilgore
8 Mar 24
4
Charles DePriest
8 Mar 24
4
Marshall D Moore
8 Mar 24
4
Kekin Ghelani
8 Mar 24
4
Juan Esteban Calle
8 Mar 24
4
Anne K. Wade
8 Mar 24
4
Tamla Oates-Forney
8 Mar 24
4
Anne P Noonan
8 Mar 24
4
STEVEN H WUNNING
8 Mar 24
4
Christopher Burke Gaskill
8 Mar 24
4
Tamla Oates-Forney
4 Mar 24
4
Anne K. Wade
4 Mar 24
4
STEVEN H WUNNING
4 Mar 24
4
Charles DePriest
4 Mar 24
4
JOSEPH S CANTIE
4 Mar 24
4
Jason Kilgore
4 Mar 24
4
HOWARD L LANCE
4 Mar 24
4
Brian D Frantz
4 Mar 24
4
Christopher Burke Gaskill
4 Mar 24
4
Karli S. Anderson
4 Mar 24
4
Anne P Noonan
4 Mar 24
4
Craig Scott Anderson
4 Mar 24
4
David Loomes
4 Mar 24
4
Kekin Ghelani
1 Mar 24
144
Notice of proposed sale of securities
15 Feb 24
SC 13G/A
PRICE T ROWE ASSOCIATES INC /MD/
14 Feb 24
SC 13G/A
VANGUARD GROUP INC
13 Feb 24
SC 13G/A
Capital International Investors
9 Feb 24
SC 13G
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
9 Feb 24
SC 13G/A
DIMENSIONAL FUND ADVISORS LP
9 Feb 24