Jonas Grossman Biography and Net Worth

Co-Founder & Board Member of Rainier Acquisition


Mr. Grossman has served as a member of our board of directors since our formation in February 2023. Mr. Grossman has more than 25 years of experience advising, financing, and supporting growth companies across the healthcare, life sciences, and technology sectors including as an investment banker, capital markets executive, and special purpose acquisition company sponsor and executive. Mr. Grossman has served as Co-Founder and Managing Partner of Chardan since December 2003 and additionally has served as President since September 2015. Mr. Grossman is an experienced SPAC sponsor and entrepreneur, having served as a founder, executive officer, and director of multiple SPACs. Mr. Grossman previously served as the Co-Founder and Chief Executive Officer and a member of the board of directors of Chardan NexTech Acquisition 2 Corp. ("Chardan NexTech"), a publicly traded SPAC, from June 2020 until the completion of its business combination with Dragonfly Energy Holdings Corp. (Nasdaq: DFLI) ("Dragonfly") in October 2022. Mr. Grossman served as the President and Chief Executive Officer and a member of the board of directors of Chardan Healthcare Acquisition 2 from June 2018 until it completed its business combination with Renovacor in September 2021, and continued to serve on the board of directors of Renovacor until the company was acquired by Rocket in December 2022. Mr. Grossman also served as President and Chief Executive Officer and member of the board of directors of Chardan Healthcare Acquisition from November 2017 until its business combination in October 2019 with BiomX, and continued to serve on the board of directors of BiomX until January 2023. Mr. Grossman was a founder and director of LifeSci Acquisition Corp., a publicly traded SPAC, from December 2018 until the close of its business combination with Vincera Pharma, Inc. in December 2020. Mr. Grossman has served on the board of directors of ZOOZ Strategy Ltd. (Nasdaq: ZOOZ) ("ZOOZ") since September 2025 and previously served as a director of a number of privately held SPACs. From 2001 to 2003, Mr. Grossman served as Vice President and Head Trader at Ramius Capital Group, a global multi-strategy investment firm. Mr. Grossman holds a B.A. in Economics from Cornell University and an M.B.A. from New York University's Stern School of Business.

What is Jonas Grossman's net worth?

The estimated net worth of Jonas Grossman is at least $2.03 million as of September 2nd, 2026. Mr. Grossman owns 200,000 shares of Rainier Acquisition stock worth more than $2,025,000 as of October 15th. This net worth estimate does not reflect any other investments that Mr. Grossman may own. Learn More about Jonas Grossman's net worth.

How do I contact Jonas Grossman?

The corporate mailing address for Mr. Grossman and other Rainier Acquisition executives is 1 Penn Plaza, New York, NY, 10119. Rainier Acquisition can also be reached via phone at (646) 984-6215. Learn More on Jonas Grossman's contact information.

Has Jonas Grossman been buying or selling shares of Rainier Acquisition?

Jonas Grossman has not been actively trading shares of Rainier Acquisition during the past quarter. Most recently, on Wednesday, September 2nd, Jonas Grossman bought 5,625 shares of Rainier Acquisition stock. The stock was acquired at an average cost of $10.00 per share, with a total value of $56,250.00. Following the completion of the transaction, the director now directly owns 200,000 shares of the company's stock, valued at $2,000,000. Learn More on Jonas Grossman's trading history.

Are insiders buying or selling shares of Rainier Acquisition?

In the last twelve months, Rainier Acquisition insiders bought shares 1 times. They purchased a total of 5,625 shares worth more than $56,250.00. The most recent insider tranaction occured on September, 2nd when Director Jonas Grossman bought 5,625 shares worth more than $56,250.00. Learn More about insider trades at Rainier Acquisition.

Information on this page was last updated on 9/2/2026.

Jonas Grossman Insider Trading History at Rainier Acquisition

Transaction DateBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
9/2/2026Buy5,625$10.00$56,250.00200,000View SEC Filing Icon  
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Jonas Grossman Buying and Selling Activity at Rainier Acquisition

This chart shows Jonas Grossman's buying and selling at Rainier Acquisition by year and by quarter.

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Rainier Acquisition Company Overview

We are a blank check company incorporated on February 2, 2023 as a Cayman Islands exempted company. We are incorporated for the purpose of effecting a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses, which we refer to throughout this prospectus as our initial business combination. We seek to partner with companies that can benefit from our scientific, investing, operating, capital markets, governance, and public-company leadership experience, and we seek to support long-term value creation through our experience, relationships, and access to capital. To date, our efforts have been limited to organizational activities as well as activities related to this offering. We have not selected any specific business combination target and we have not, nor has anyone on our behalf, initiated any substantive discussions, directly or indirectly, with any business combination target. We have generated no operating revenues to date, and we do not expect that we will generate operating revenues until we consummate our initial business combination. While we may pursue an acquisition opportunity in any business, industry, sector or geographic location, we intend to focus on life sciences companies and to capitalize on the ability of our management team to identify, evaluate, and support companies where the science, management team, and value proposition are most compelling. We intend to evaluate opportunities globally and will pursue opportunities wherever we believe we can create sustainable long-term value. Our management team has spent decades investing in, financing, operating, and advising life sciences companies, including through public and private financings, mergers and acquisitions, public-company leadership roles, and special purpose acquisition company transactions. Through these experiences, we have developed a global network of relationships across the life sciences ecosystem that we believe provides differentiated access to potential acquisition opportunities and proprietary deal flow. We intend to evaluate and target companies that aim to improve human health, including those in therapeutics, diagnostics, genomics, precision medicine, life science tools, research services, biomanufacturing and related subsectors, where our management team has extensive investment and operational experience. Our executive offices are located in New York, New York.
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Today's Range

Now: $10.08
Low: $10.16
High: $10.17

50 Day Range

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2 Week Range

Now: $10.08
Low: $10.01
High: $10.38

Volume

434 shs

Average Volume

35,008 shs

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