J.D., University of California, Berkeley School of Law, 2017
B.S., summa cum laude, University of Southern California, 2013
Phi Beta Kappa Honor Society
Presidential Scholar
Jon is an associate in the Firm’s Corporate practice group. He focuses his practice on mergers and acquisitions, emerging companies and venture capital, and other corporate and securities law matters.
Jon represents clients in many industries and at every stage of the business cycle, from large international corporations, to nonprofits, to brand new startups and their founders. He advises clients on entity formation, financing transactions, acquisitions, licensing deals, commercial transactions, and countless other business and legal scenarios. Jon has experience representing venture capital and private equity clients, as well as the companies they invest in and acquire.
Jon began his career as a summer associate and then associate with Weintraub, and later returned after practicing at the Silicon Valley office of a major international law firm.
He received his J.D. from Berkeley Law, where he clerked with the California Attorney General’s Office, and later the Department of Agriculture (USDA). In law school, Jon was also selected as a teaching assistant in the legal writing department, volunteered with the Workers’ Rights Disability Law Clinic, and competed in the Halloum Negotiations Competition.
During and after undergrad, Jon volunteered with Bet Tzedek Legal Services in Los Angeles, running clinics in courthouses across the county, where he helped hundreds of low-income families obtain conservatorships for disabled adult children and other relatives. He received his B.S. in Music Industry from USC, where he performed with ensembles in the Thornton School of Music and the Spirit of Troy, the self-proclaimed “Greatest Marching Band in the History of the Universe.”
In his free time, Jon enjoys hiking and fishing in the Sierras, music, sports, and spending time with his wife and their two daughters.
Awards
The Best Lawyers in America: Ones to Watch, 2026 (Corporate Law; Mergers and Acquisitions Law)
Northern California Rising Stars List, by Super Lawyers (2019-2021, 2025)
Business/Corporate
August 21, 2025
Weintraub Tobin is proud to share that 46 of the Firm’s attorneys have been honored in the 2026 editions of The Best Lawyers in America® and Best Lawyers: Ones to Watch in America™ (up from 41 attorneys last year). Of the 46 attorneys recognized, 11 have been recognized as Ones…
June 30, 2025
Weintraub Tobin is honored to announce that 47 of the Firm’s attorneys have been recognized in the 2025 Northern California Super Lawyers® and Rising Star lists, an annual review recognizing outstanding attorneys in the region. The selection process includes peer nominations, independent research to evaluate candidates, and peer reviews.…
March 20, 2024
Weintraub Tobin is pleased to welcome Jon E. Ancona as an associate in the Firm’s Corporate practice group. He focuses his practice on mergers and acquisitions, emerging companies and venture capital, and other corporate and securities law matters.
March 1, 2025
On March 1, 2025, Jon E. Ancona presented for the Sacramento Entrepreneurship Academy cohort on legal foundations for startups. The presentation was a part of the 2025 program curriculum, with a focus on business formation, entity selection, and intellectual property protections. Jon Ancona focuses his legal practice on mergers and…
June 17, 2024
On Tuesday, June 18th, Weintraub attorney Jon Ancona presented “Angel Investors and Your First Financing—StartupSac Scale Up Seminar.” As part of the Angel Investment Workshop, Jon explained the essential elements of term sheets, deal points, and the key documents involved in angel investments. StartupSac Scale Up Seminars are designed for startups…
February 1, 2020
Weintraub attorneys Justin M. Borrowdale and Jon E. Ancona presented on Legal Essentials for Startup Companies for WeWork members at the Well’s Fargo building in Sacramento, CA. They discussed issues that newer and growing companies encounter; how to avoid common pitfalls; and the benefit of running your company like you are…
