Jonathan H. Ashtor

Paul, Weiss is advising GSK plc in its $950 million all-cash acquisition of 35Pharma Inc., a Canada-based, private, clinical-stage biopharmaceutical company specializing in the development of novel protein-based therapeutics. The deal includes the acquisition of HS235, a potential best-in-class investigational medicine for the treatment of pulmonary hypertension and pulmonary arterial hypertension. The Paul, Weiss team is led by corporate partners Krishna Veeraraghavan and Benjamin Goodchild; intellectual property partners Jonathan Ashtor, Meggin Bednarczyk and Marisa Geiger, and counsel Matthew Rosenberg; antitrust partner Christopher Wilson; executive compensation partner Jean McLoughlin; tax partner Brian Krause; and litigation counsel Audrey Paquet.

Feb 25

1 min

Paul, Weiss advised Brookfield Asset Management in connection with the chapter 11 cases of PosiGen, a national residential solar and energy efficiency provider. Brookfield, which held $600 million of the company’s debt, provided prepetition bridge financing and post-petition debtor-in-possession financing to PosiGen and ultimately acquired substantially all of PosiGen’s assets through a combination of a bankruptcy sale of the chapter 11 debtors’ assets and a strict foreclosure on their non-debtor affiliates’ assets. The U.S. Bankruptcy Court for the Southern District of Texas approved PosiGen’s chapter 11 plan, providing for a litigation trust in which Brookfield holds a majority of the beneficial interests. Paul, Weiss also advised Brookfield affiliates in related litigation filed by Connecticut Green Bank in Connecticut federal court prior to PosiGen’s chapter 11 filing on November 24, 2025. That case was dismissed with prejudice on February 10 following a settlement. The Paul, Weiss team includes restructuring partners Brian Hermann, Jacob Adlerstein, Brian Bolin and Michael Colarossi and counsel Douglas Keeton; corporate partners Austin Pollet, Kelann Stirling and Jeremy Veit and counsel Andrea Quek; tax partners Robert Holo and Anne McGinnis; litigation partners Gregory Laufer, Andrew Ehrlich and Nathan Mitchell and counsel Audrey Paquet and Robert Kravitz; intellectual property partner Jonathan Ashtor; executive compensation partner Lawrence Witdorchic; and real estate partner Matthew Dulak.

Feb 23

1 min

Paul, Weiss advised Charlesbank Capital Partners, a Boston-based middle-market private equity firm with over $24 billion in assets under management, on the spinout of its Technology Opportunities Funds (TOF), with over $2 billion in assets under management, to Eterna Growth Partners, a newly registered investment adviser led by TOF investment professionals. The Paul, Weiss team was led by partners Udi Grofman, Matthew Collin, Gregory Laufer and Reuven Garrett, and included litigation partner Janus Schutte; and intellectual property partner Jonathan Ashtor.

Feb 3

1 min

Paul, Weiss is advising quantum computing company IonQ on its approximately $1.8 billion cash-and-stock acquisition of semiconductor foundry SkyWater Technology. The combination will create a first-of-its-kind vertically integrated quantum platform delivering innovations for customers across the pharmaceutical, finance, and cloud and enterprise computing industries, among others. Following the close of the transaction, expected by the third quarter of 2026 subject to customary closing conditions, SkyWater will operate as a wholly owned subsidiary under the SkyWater name. The Paul, Weiss team is led by corporate partners Chelsea Darnell and Robert Kindler, and includes partners Timothy Cruickshank and Tony Rim; intellectual property partner Jonathan Ashtor; antitrust partners Scott Sher and Yuni Sobel; executive compensation partner Jean McLoughlin; and environmental partner Stefanie Gitler.

Jan 26

1 min

Paul, Weiss advised Investindustrial on the financing aspects of its acquisition of leading North American private label snacking and beverage manufacturer TreeHouse Foods, Inc., for an enterprise value of $2.9 billion. The financing for the take-private transaction consisted of proceeds from a first lien credit facility and an offering of senior secured notes. The group also entered into an asset-backed loan facility in connection with the transaction. The Paul, Weiss team was led by corporate partners Eric Wedel, Matthew Leist, Caroline Epstein, Neel Sachdev, Matthew Merkle, Deirdre Jones and Stefan Arnold-Soulby and included partner Reva Raghavan; tax partner Robert Holo and counsel Samir Kurani; and intellectual property partner Jonathan Ashtor.

Feb 11

1 min