2024 when it was delisted from the NYSE and commenced trading on the OTC Pink, and subsequently on the OTC Expert Market, under the new ticker symbol “UPHL.” Dr. Katz initially served as the Chief Executive Officer of GIG2 until August 2019, when Dr. Dinu substituted for him in that position. He also served as the Executive Chairman and Secretary of GIG2 since inception until the closing of the business combination in June 2021, when Dr. Katz was appointed as the
Co-Chairman
of the board of directors of UpHealth, becoming the sole Chairman of the Board of UpHealth in June 2022. In this capacity, Dr. Katz has steered many restructurings and refinancings of the company, including the sales of two divisions of the company — IGI, which was sold for $56 million in a cash deal to Belmar Pharma Solutions in June 2023, and Cloudbreak Health, which was sold for $180 million in a cash deal to GTCR in March 2024. However, some subsidiaries of UpHealth, Inc., such as UpHealth Holdings, Inc. and its wholly-owned subsidiaries, Thrasys, Inc. and Behavioral Health Services, LLC, and each of their subsidiaries filed voluntary petitions for relief under Chapter 11 of U.S. Bankruptcy Code in 2023. In September 2025, UpHealth Holdings, Inc. was ordered to liquidate following its bankruptcy filing. Dr. Katz served as the Chairman of the board of directors from its IPO through liquidation. In February 2020, Drs. Katz and Dinu
co-founded
GIG3, a
Equity (PPE) company formed for the purpose of acquiring a company in the TMT industry. GIG3 completed its initial public offering in May 2020, in which it sold 20,000,000 units at a per unit price of $10.00, with each unit consisting of one share of GIG3 common stock and three-fourths (3/4) of one warrant to purchase one share of GIG3 common stock, generating aggregate proceeds of $200 million. On May 6, 2021, GIG3 completed its business combination with Lightning Systems, Inc., which did business as Lightning eMotors, and GIG3 retained such name. Lightning eMotors, Inc. was listed on the NYSE under the new ticker symbol “ZEV,” but now is listed on the OTC Expert Market under the ticker symbol “ZEVY.” Dr. Katz served as the Chief Executive Officer, Executive Chairman and Secretary of GIG3 since its inception until the closing of the business combination in May 2021, when Dr. Katz was appointed as the
Co-Chairman
of the board of directors of Lightning eMotors and served in that position until October 2021 when he did not stand for reelection to the board of directors. Lightning eMotors went into receivership in December 2023, and as a result, the assets of Lightning eMotors were sold to GERCO LLC, a subsidiary of GILLIG, in February 2024. In December 2020, Drs. Katz and Dinu
co-founded
GIG4, a
Equity (PPE) company formed for the purpose of acquiring a company in the TMT and sustainable industries. GIG4 completed its initial public offering in February 2021, in which it sold 35,880,000 units at a per unit price of $10.00, with each unit consisting of one share of GIG4 common stock and
one-third
(1/3) of one (1) warrant to purchase one share of GIG4 common stock, generating aggregate proceeds of about $359 million. GIG4 listed on Nasdaq under the symbol “GIG.” In June 2021, GIG4 announced its agreement for a business combination with BigBear.ai Holdings, LLC. The business combination between GIG4 and BigBear.ai Holdings, LLC closed in December 9, 2021, and GIG4 was renamed BigBear.ai Holdings, Inc. BigBear.ai moved its listing from Nasdaq to the NYSE, where it is listed under the ticker symbol “BBAI.” Dr. Katz served as the Executive Chairman of GIG4 from its inception until the closing of the business combination with BigBear.ai on December 9, 2021, and since then and until March 2024, has continued to serve as a member of the board of directors of BigBear.ai. In February 2021, Drs. Katz and Dinu
co-founded
GigInternational1, Inc. a
Equity (PPE) company formed for the purpose of acquiring a company in the TMT, A&D, mobility and semiconductor industries with a particular emphasis on the EMEA market. GigInternational1 completed its initial public offering in May 2021, in which it sold 20,900,000 units at a per unit price of $10.00, with each unit consisting of one share of GigInternational1 common stock and
one-half
(1/2) of one (1) warrant to purchase one share of GigInternational1 common stock, generating aggregate proceeds of $209 million. GigInternational1 listed on Nasdaq under the symbol “GIW,” but in November 2022, decided to liquidate and dissolve the company rather than pursue a business combination, and in December 2022, GigInternational1 delisted from Nasdaq after liquidating its trust account. Dr. Katz was the Executive Chairman of GigInternational1 since its inception. Prior to launching his first
(PPE) company in 2017, Dr. Katz dedicated 10 years to incept and bootstrap, develop and manage GigPeak, originally known as GigOptix, Inc. He served as Chairman of the Board, Chief Executive Officer and President of GigOptix / GigPeak from its inception in 2007 until its sale in April 2017 to IDT for $250 million in cash. While Dr. Katz was at GigPeak’s helm, the company completed 10 M&A deals. From 2003 to 2005, Dr. Katz was the chief executive officer, president, and a member of the board of directors of Intransa, Inc. From 2000 to 2003, Dr. Katz was the chief executive officer, president and a member of the board of directors of Equator Technologies. Prior to it, Dr. Katz held several leadership positions