Career
Jonathan Seiffer has been Senior Partner of Leonard Green & Partners since January 2016. Jonathan Seiffer is a control person of the firm and directly owns between 5% and 10% of it.
Leonard Green & Partners, L.P. is a Los Angeles, CA firm with $85.6B under management, 117 clients and 57 advisers in one office, as of its March 2026 filing.
Jonathan Seiffer joined Leonard Green & Partners in 1994 and is a member of its Investment Committee and Investment Management Committee. The firm says he previously worked in corporate finance at DLJ and earned degrees in systems engineering and economics from the University of Pennsylvania.
The IAPD individual lookup on 17 October 2026 returned no individual record. This profile uses the firm’s Form ADV officer listing.
Credentials and registrations
Individual registration and examination information for Jonathan Seiffer is unavailable. An officer title or CRD number does not by itself establish current investment adviser representative registration, and no registration or examination counts are inferred.
Officer record
- Full name
- Jonathan Seiffer
- CRD
- 2430405
- Record basis
- Form ADV officer listing
- Firm bio
- leonardgreen.com
Disciplinary history is not reported here, in either direction. Check the SEC record.
Common questions
Where does Jonathan Seiffer work?
Jonathan Seiffer has been Senior Partner of Leonard Green & Partners, L.P. since January 2016, and is a control person of the firm.
Leadership at Leonard Green & Partners
- Cody FranklinPartner/Chief Financial Officer
- Andrew GoldbergPartner/Chief Compliance Officer
- John BaumerSenior Partner
- John DanhaklManaging Partner
- William MccollumSenior Partner
- Jonathan SokoloffManaging Partner