Financial reports
10-Q
2022 Q2
Quarterly report
4 Aug 22
10-Q
2022 Q1
Quarterly report
5 May 22
10-K/A
2021 FY
Annual report (amended)
29 Apr 22
10-K
2021 FY
Annual report
23 Feb 22
10-Q
2021 Q3
Quarterly report
4 Nov 21
10-Q
2021 Q2
Quarterly report
5 Aug 21
10-Q
2021 Q1
Quarterly report
6 May 21
10-K
2020 FY
Annual report
23 Feb 21
10-Q
2020 Q3
Quarterly report
3 Nov 20
10-Q
2020 Q2
Quarterly report
5 Aug 20
Current reports
8-K
Termination of a Material Definitive Agreement
19 Oct 22
8-K
Alleghany Corporation Reports 2022 Second Quarter Results
4 Aug 22
8-K
Entry into a Material Definitive Agreement
27 Jun 22
8-K
Alleghany Corporation Stockholders Approve Acquisition By
9 Jun 22
8-K
Alleghany Corporation Reports 2022 First Quarter Results
5 May 22
8-K
Alleghany Corporation Announces End of “Go-Shop” Period
18 Apr 22
8-K
Entry into a Material Definitive Agreement
21 Mar 22
8-K
Berkshire Hathaway to Acquire Alleghany Corporation
21 Mar 22
8-K
Departure of Directors or Certain Officers
28 Feb 22
8-K
Alleghany Corporation Reports 2021 Fourth Quarter and Full Year Results
23 Feb 22
Registration and prospectus
15-12G
Securities registration termination
31 Oct 22
POSASR
Automatic shelf registration (post-effective amendment)
19 Oct 22
POSASR
Automatic shelf registration (post-effective amendment)
19 Oct 22
POSASR
Automatic shelf registration (post-effective amendment)
19 Oct 22
POSASR
Automatic shelf registration (post-effective amendment)
19 Oct 22
POS AM
Prospectus update (post-effective amendment)
19 Oct 22
POS AM
Prospectus update (post-effective amendment)
19 Oct 22
POS AM
Prospectus update (post-effective amendment)
19 Oct 22
POS AM
Prospectus update (post-effective amendment)
19 Oct 22
S-8 POS
Registration of securities for employees (post-effective amendment)
19 Oct 22
Proxies
DEFA14A
Additional proxy soliciting materials
27 May 22
DEFM14A
Proxy related to merger
29 Apr 22
DEFA14A
Additional proxy soliciting materials
18 Apr 22
PREM14A
Preliminary proxy related to merger
11 Apr 22
DEFA14A
Additional proxy soliciting materials
21 Mar 22
DEFA14A
Additional proxy soliciting materials
21 Mar 22
DEF 14A
Definitive proxy
15 Mar 21
DEFA14A
Additional proxy soliciting materials
24 Apr 20
DEFA14A
Additional proxy soliciting materials
13 Apr 20
DEF 14A
Definitive proxy
16 Mar 20
Other
EFFECT
Notice of effectiveness
25 Oct 22
EFFECT
Notice of effectiveness
25 Oct 22
EFFECT
Notice of effectiveness
25 Oct 22
EFFECT
Notice of effectiveness
25 Oct 22
SD
Conflict minerals disclosure
27 May 22
SD
Conflict minerals disclosure
1 Jun 21
SD
Conflict minerals disclosure
1 Jun 20
UPLOAD
Letter from SEC
7 Jan 20
CORRESP
Correspondence with SEC
2 Jan 20
UPLOAD
Letter from SEC
18 Dec 19
Ownership
SC 13G/A
VICTORY CAPITAL MANAGEMENT INC
6 Feb 23
13F-HR
Quarterly holdings report by institutional manager
1 Nov 22
4
Joseph Patrick Brandon
21 Oct 22
4
Lauren M Tyler
21 Oct 22
4
PHILLIP M MARTINEAU
21 Oct 22
4
John F Shannon
21 Oct 22
4
Ian H Chippendale
21 Oct 22
4
KAREN BRENNER
21 Oct 22
4
Raymond Wong
21 Oct 22
4
Christopher Kent Dalrymple
21 Oct 22