John Langton Sennott Jr.

Business address
C/O Alleghany Corporation, 1411 Broadway, 34 Th Floor, New York, NY, 10018
Top holdings (ownership)
ASIC
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John Langton Sennott Jr. has filed 55 SEC EDGAR filings since 18 May 2006

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing OWNERSHIP DOCUMENT 16 Jun 2025 11 Jun 2025 001-42695
3 Open Document Open Filing OWNERSHIP DOCUMENT 11 Jun 2025 11 Jun 2025 001-42695
4 Open Document Open Filing PRIMARY DOCUMENT 01 Jul 2019 30 Jun 2019 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 02 Apr 2019 15 Jan 2019 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 04 Feb 2019 03 Feb 2019 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 03 Jan 2019 31 Dec 2018 001-09371
4 Open Document Open Filing OWNERSHIP DOCUMENT 02 Oct 2018 30 Sep 2018 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 02 Jul 2018 30 Jun 2018 001-09371
4 Open Document Open Filing OWNERSHIP DOCUMENT 03 Apr 2018 30 Mar 2018 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 28 Feb 2018 26 Feb 2018 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 26 Jan 2018 26 Jan 2018 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 23 Jan 2018 21 Jan 2018 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 03 Jan 2018 29 Dec 2017 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 02 Oct 2017 29 Sep 2017 001-09371
4 Open Document Open Filing OWNERSHIP DOCUMENT 05 Jul 2017 30 Jun 2017 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 03 Apr 2017 31 Mar 2017 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 01 Mar 2017 27 Feb 2017 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 27 Jan 2017 19 Jan 2016 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 04 Jan 2017 30 Dec 2016 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 03 Oct 2016 30 Sep 2016 001-09371
4 Open Document Open Filing OWNERSHIP DOCUMENT 01 Jul 2016 30 Jun 2016 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 01 Apr 2016 31 Mar 2016 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 29 Feb 2016 26 Feb 2016 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 05 Jan 2016 31 Dec 2015 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 01 Oct 2015 30 Sep 2015 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 02 Jul 2015 30 Jun 2015 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 01 Apr 2015 31 Mar 2015 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 26 Feb 2015 24 Feb 2015 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 04 Feb 2015 03 Feb 2015 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 05 Jan 2015 31 Dec 2014 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 02 Oct 2014 30 Sep 2014 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 01 Jul 2014 30 Jun 2014 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 02 Apr 2014 31 Mar 2014 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 05 Mar 2014 30 Jun 2013 001-09371
4 Open Document Open Filing PRIMARY DOCUMENT 27 Feb 2014 15 Jan 2014 001-09371