Jason Grunfeld advises private investment funds on the full spectrum of strategic issues related to their formation, structure and operation. Jason’s depth of industry knowledge allows him to quickly understand his clients’ business objectives and helps them achieve their goals. Jason is also Kleinberg Kaplan’s head of business development and one of the firm’s hiring partners.



Jason brings a breadth of experience to his clients. In addition to drafting a fund’s offering documents, Jason drafts and negotiates side letters, seed/acceleration deals and managed account agreements. He also structures agreements among the principals of management companies and helps clients with marketing agreements and investor presentations. On the employment side, Jason drafts both employment agreements and termination/separation agreements for executives, within the financial services area as well as in other sectors.

Jason is highly regarded throughout the private investment funds industry and frequently speaks at industry conferences and events. He is also an active thought leader and presenter for a prominent COO/CFO Hedge Fund Group. Jason has been recognized by commentary in The Legal 500: United States, Super Lawyers, and by Who’s Who Legal as one of the top lawyers for “Private Funds.”

Jason facilitates connections for clients and service providers by leveraging his robust network that includes prime brokers, major accounting firms and fund administrators. He brings to bear his networking skills and client focus as the head of business development for Kleinberg Kaplan, a role in which he oversees the firm’s approach to client service.

As one of the firm’s hiring partners, Jason is responsible for identifying and hiring top-tier talent to join the Kleinberg Kaplan team.


George Washington University (J.D., 2001)

University of Wisconsin (B.A., 1998)

Bar Admissions

2002, New York

Speaking Engagements

Fund Structuring

Speaker, Emerging Manager Forum USA, May 2021

Emerging Manager Showcase

Host and Judge, Emerging Manager Forum USA, May 2021

Fund Structuring & Setup

Speaker, Emerging Manager Forum USA, October 2020

Building Consensus: Engaging Partners Around Change

Speaker, The 27th Annual Marketing Partner Forum, Thomson Reuters, January 2020

Compensation Issues and Considerations with respect to Operating and Partnership Agreements

Speaker, Private COO/CFO Conference, June 2019

Divergent Designs: The New Responsibilities of the Relationship Partner – Part II

Speaker, The 26th Annual Thomson Reuters Marketing Partner Forum, January 2019

Emerging Manager Panel

Speaker, JonesTrading 2018 Service Provider Summit, November 2018

Essentials for Funds to Launch and Grow in Today’s Environment

Speaker, KPMG, October 2018

Structuring, Tax & Regulation

Speaker, Emerging Manager Forum New York 2018, April 2018

Aligning the Stars: Collaborative Management Strategies in Lawyer Compensation

Speaker, The 25th Annual Marketing Partner Forum, Thomson Reuters, January 2018

The Dangers of Insider Trading – A Cautionary Tale and the legal and compliance perspectives

Moderator, Presented by Kleinberg Kaplan and Duff & Phelps, January 2018

Investment Funds: Hot Topics

Speaker, AIMA Fund Manager Training Session, October 2017

Issues to Consider when Negotiating Vendor Contracts

Speaker, Private COO/CFO Seminar, September 2017

Legal & Regulatory Update

Speaker, Credit Suisse Prime Services Leadership Conference, March 2017

The Road Not Taken: Assessing Competitive Threats to Firm Differentiation

Speaker, The 24th Annual Marketing Partner Forum, Thomson Reuters, January 2017

The Art of the Seed Deal, presented by Kleinberg Kaplan and EisnerAmper

Speaker, January 2017

Legal & Compliance – Setting Up For Success

Speaker, Bloomberg Hedge Fund Startup Conference, October 2016

Follow The Right Path When Growing Your Fund

Speaker, Cantor Fitzgerald and EisnerAmper, June 2016

Employment Related Disputes, Private COO/CFO Conference

Moderator, June 2016

Where Are You Going, Where Have You Been?: Investing in Junior Partners for Business Development, The 23rd Annual Marketing Partner Forum: Transforming Value into Profitability

Speaker, Thomson Reuters, January 2016

Legal – Getting It Right From The Start, Bloomberg Hedge Fund Startup Conference

Speaker, September 2015

Employee Compensation & Restrictive Covenants: The Structures & Pitfalls to Consider, GAIM Ops Cayman

Speaker, April 2015

Starting a Hedge Fund, presented by SS&C

Speaker, February 2015

Stormy Weather: The Law Firm Rainmaker Redefined

Speaker, Thomson Reuters, January 2015

Year End Update

Moderator, Presented by Rothstein Kass & Kleinberg Kaplan, November 2013

Starting or Growing a Hedge Fund

Speaker, Presented by EisnerAmper, November 2013

Taxageddon 2013, presented by Merrill Lynch and Kleinberg Kaplan

Moderator, October 2012

Operational risk and employment issues for hedge funds – Roundtable

Speaker, Presented by Kinetic Partners, March 2010

Hedge Fund Compensation Practices Conference

Speaker, Presented by UBS, June 2009


High-Class Problems: Issues Successful Start-Up Managers Face – Part I

Wells Fargo Prime Service’s Industry and Regulatory Updates, March 2020

To Seed or Not to Seed

EisnerAmper Asset Management Intelligence, Q1 2017


Kleinberg Kaplan Receives High Marks from Clients in Latest Edition of The Legal 500: United States

June 17, 2021

New York, June 17, 2021 – Premier boutique law firm Kleinberg Kaplan was recognized in the latest edition of The Legal 500: United States for its Hedge Funds and Investor Activism practices. The Hedge Funds practice was celebrated for advising a wide range of fund managers on large capital commitment facilities, as well as spin-outs and set-up issues for new managers.…

Kleinberg Kaplan Recognized in Chambers USA 2021

May 20, 2021,

Firm ranked in Hedge Funds category; three partners individually honored New York, May 20, 2021 — Premier boutique law firm Kleinberg Kaplan announced that it has been recognized by Chambers USA 2021 as a leading firm. The firm was again included in the “Hedge Funds (USA – Nationwide)” category, and three Kleinberg Kaplan partners were individually…

15 Kleinberg Kaplan Attorneys Named as 2020 Super Lawyers or Rising Stars

November 17, 2020

We are pleased to announce that 15 of the firm’s attorneys were selected for inclusion in the 2020 edition of Super Lawyers®, a national legal ranking. Attorneys were nominated by their peers and recognized for their outstanding professional achievement in several legal practice areas including business/corporate, business litigation, estate & probate, mergers & acquisitions, real estate,…

Kleinberg Kaplan Praised as ‘Wall Street’s best-kept secret’ in Latest Edition of The Legal 500: United States

June 23, 2020,

Premier boutique law firm Kleinberg Kaplan was recognized in the latest edition of The Legal 500: United States for its Investment Funds practice. The firm’s work on behalf of the world’s leading hedge funds and alternative investment funds was praised as “Wall Street’s best-kept secret.” Client testimonials lauded the “impressive” capabilities of the group’s lawyers and…

Kleinberg Kaplan Becomes Champion Sponsor of Women in Funds

July 23, 2019

Premier boutique law firm Kleinberg Kaplan announced that it has become a champion-level sponsor of WOMEN IN FUNDS, a social community for female leaders in the private investment funds industry and select senior leaders at law firms, allocators, and industry consultants. “As a firm we recognize the need for diversity and we likewise counsel our…