Officer

JONATHAN LEFF

7 organizations • 31 returns • Latest tax year 2025

DirectorExec. CommitteeExecutive CommitteeChairmanTrusteeBoard MemberBoard Member (Partial Year)Co-ChairmanMemberVP

Name Match Caveat

This page groups activity by normalized name only. It may combine different people who share the same name.

Organizations

Returns

Total Compensation

Total Benefits

Organizations

Organization	EIN	Returns	Latest Year	Latest Title	Compensation
Spinal Muscular Atrophy Foundation	01-0759380	11	2024	Director	$0
Friends of Cancer Research	52-1983273	9	2022	Exec. Committee	$0
Biotechnology Innovation Organization	52-1224577	3	2017	Board Member (Partial Year)	$0
Bowman International School	77-0403885	3	2017	Co-Chairman	$0
Bradford College Alumni Association Inc.	04-3524471	2	2025	Director	$0
USA Climbing Foundation	85-0628740	2	2023	Trustee	$0
The Deerfield Partnership Foundation	05-0618950	1	2017	VP	$0

Returns

Tax Year	Organization	Type	Title	Hours / Week	Compensation	Benefits	Return
2025	Bradford College Alumni Association Inc.	990	Director	0	$0	$0	View return
2024	Bradford College Alumni Association Inc.	990	Director	0	$0	$0	View return
2024	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2023	USA Climbing Foundation	990	Trustee	1	$0	$0	View return
2023	USA Climbing Foundation	990	Trustee	1	$0	$0	View return
2023	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2022	Friends of Cancer Research	990	Exec. Committee	0.5	$0	$0	View return
2022	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2021	Friends of Cancer Research	990	Exec. Committee	0	$0	$0	View return
2021	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2020	Friends of Cancer Research	990	Exec. Committee	0	$0	$0	View return
2020	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2019	Friends of Cancer Research	990	Exec. Committee	0	$0	$0	View return
2019	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2018	Friends of Cancer Research	990	Exec. Committee	0	$0	$0	View return
2018	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2017	Biotechnology Innovation Organization	990	Board Member (Partial Year)	2	$0	$0	View return
2017	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2017	Friends of Cancer Research	990	Exec. Committee	0	$0	$0	View return
2017	The Deerfield Partnership Foundation	990PF	VP	1	$0	$0	View return
2017	Bowman International School	990	Co-Chairman	2	$0	$0	View return
2016	Friends of Cancer Research	990	Executive Committee	0	$0	$0	View return
2016	Biotechnology Innovation Organization	990	Board Member	2	$0	$0	View return
2016	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2016	Bowman International School	990	Chairman	2	$0	$0	View return
2015	Friends of Cancer Research	990	Executive Committee	-	$0	$0	View return
2015	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2015	Bowman International School	990	Chairman	2	$0	$0	View return
2015	Friends of Cancer Research	990	Executive Committee	-	$0	$0	View return
2014	Spinal Muscular Atrophy Foundation	990PF	Director	1	$0	$0	View return
2014	Biotechnology Innovation Organization	990	Member	2	$0	$0	View return