ALLEGHANY CORP /DE

Q: Jun 30 2022

Q: Mar 31 2022

FY: Dec 31 2021

FY: Dec 31 2021

Q: Sep 30 2021

Q: Jun 30 2021

Q: Mar 31 2021

FY: Dec 31 2020

Q: Sep 30 2020

Q: Jun 30 2020

Q: Mar 31 2020

FY: Dec 31 2019

Q: Sep 30 2019

Q: Jun 30 2019

Q: Mar 31 2019

FY: Dec 31 2018

Q: Sep 30 2018

Q: Jun 30 2018

Q: Mar 31 2018

FY: Dec 31 2017

1.02,2.01,3.01,3.03,5.01,5.02,5.03,9.01

2.02,9.01

1.01,9.01

5.07,8.01,9.01

2.02,9.01

8.01,9.01

Entry into a Material Definitive Agreement

Other Events

5.02,9.01

2.02,9.01

5.02,9.01

2.02,9.01

5.02,9.01

1.01,9.01

2.02,9.01

8.01

2.02,9.01

5.07

8.01

5.02,8.01,9.01

Certification of termination of registration of a class of securities (Section 12(g))

Notice of Effectiveness

Notice of Effectiveness

Notice of Effectiveness

Notice of Effectiveness

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Notification of removal from listing and/or registration on a national securities exchange

Prospectus Supplement for Delayed or Continuous Offering

Free Writing Prospectus

Additional Information for Proxy Statement/ Votes

No description available

Additional Information for Proxy Statement/ Votes

No description available

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

none

none

Brandon Joseph Patrick

Tyler Lauren M

BRENNER KAREN

MARTINEAU PHILLIP M

Shannon John F

Cheesman Chris H

Chippendale Ian H

Wong Raymond

Dalrymple Christopher Kent

Kirby Jefferson

Jacobs Kerry J

FOOS JOHN G

Shannon John F

Jacobs Kerry J

none

Jacobs Kerry J

Shannon John F

none

Post-effective amendment to an automatic shelf registration statement

Post-effective amendment to an automatic shelf registration statement

Post-effective amendment to an automatic shelf registration statement

Post-effective amendment to an automatic shelf registration statement

Specialized Disclosure Report

Post-effective amendment to an automatic shelf registration statement

Specialized Disclosure Report

Specialized Disclosure Report

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Specialized Disclosure Report

Specialized Disclosure Report

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC