Code of Conduct Lawyers for Rialto, California

I am a startup veteran with a demonstrated history of execution with companies from formation through growth stage and acquisition. A collaborative and data-driven manager, I love to build and lead successful teams, and enjoy working full-stack across all aspects of the business.

Having overseen over $1.2 billion in transaction value, we are able to provide top-tier service at affordable rates, with much more personalized attention and fast turnarounds. After working for a AM Law Top 100 firm, I started my own firm and have been lucky enough to represent numerous conglomerates (FOX, Endeavor, etc.), promising startups, small businesses and private individuals. Our areas of expertise - Business Formations and Operating Agreements; Capital Raises and Debt Financing; Commercial Transactions; M&A; Real Estate; Intellectual Property; Employment and Hiring; Outside General Counsel; Corporate Agreements and Governance; Litigation and Dispute Resolution. We have been featured in The Wall Street Journal, Marketwatch, Yahoo Finance, Variety, Business Insider, Los Angeles Magazine, the LA Times, and others. We are driven by an unwavering commitment to our clients, going above and beyond to deliver results.

I provide efficient, business-focused contract counsel services to companies and law firms, drawing on my experience as a Supervising Attorney and former Assistant Attorney General handling complex litigation, contracts, and regulatory matters across multiple jurisdictions. I deliver practical, strategic solutions—whether drafting and negotiating agreements, advising on employment and business issues, or managing risk before disputes arise. Clients hire me because I step in quickly, provide clear guidance, and produce high-quality work without unnecessary overhead.

Legal services cost too much, and are often of low quality. I have devoted my law practice to providing the best work at the most affordable price—in everything from defending small businesses against patent trolls to advising multinational corporations on regulatory compliance to steering couples through a divorce.

I received my undergraduate degree from Columbia University and my JD from UC Davis School of Law. I specialize in drafting, reviewing, and litigating contracts, general civil litigation, restraining orders, and family law. I have helped entrepreneurs form their business entities and grow their small businesses. This area of my practice has focused heavily on YouTubers, podcasters, and individuals creating unique online platforms. In the family law context, I have helped my clients petition for and obtain custody of their children and modify existing custody arrangements.

Multilingual California Attorney with experience in Immigration, Real Estate, Contracts.

Rosanne (Rosie) Brady Muschenheim is an experienced estate planning attorney practicing law exclusively in trusts, estates, business, and tax law. She studied advanced tax law by taking several courses through Boston University's LLM program. She served as the Western Region Estate Planning Consultant for Bessemer Trust Company in addition to running her own law firm. Rosie spent several years working in Silicon Valley at a prestigious law firm serving ultra high net worth clients, including Founders, Directors, and Officers at companies such as Google, Netflix, Juniper Networks, Tesla, DocuSign, Looker, Nvidia, Xilinx, and Fortinet. Rosie spent time practicing in Honolulu, Hawaii serving ultra high net worth clients, including descendants of Hawaiian royalty. While in Orange County, Rosie assisted many high net worth clients of notable fame in the entertainment industry and the manufacturing industry. Rosie started her own law firm to provide a more customized and personal service to clients than what is offered through larger law firms. Trust is essential to building client relationships, and with her own law firm Rosie is able to provide more attention and care to each client matter.

David M. Abner is a practicing attorney with over 30 years of experience representing clients ranging from startups to Fortune 500 companies in California and Texas. Mr. Abner is currently based in Los Angeles, California, and his practice focuses on negotiating the purchase and sale of businesses; negotiating equity and debt financing agreements; drafting and negotiating revisions to a variety of commercial agreements; and investigating and responding to law enforcement and regulatory compliance investigations. Additionally, Mr. Abner has considerable experience dealing with litigation involving ownership and valuation of privately held companies. He has tried nearly a dozen cases in private practice, including cases involving breach of contract, products liability, fraud, and officer and director liability. As in-house counsel for Ashland Inc., Mr. Abner worked with business leaders daily to assess, manage and prevent a variety of legal risks that threatened the viability and profitability of products, services and customer relationships. His efforts produced results that included settling a $700M anti-trust class action lawsuit for less than $7M; assisting in closing the sale of the company’s joint venture interests in an oil and gas subsidiary; assessing and quantifying the liabilities associated with the acquisition of other businesses; and supervising Ashland’s responses to DOJ, FBI and EPA investigations. Mr. Abner has been licensed to practice law in Texas since 1993, and in California since 2012. Mr. Abner obtained his Juris Doctorate from the Dedman School of Law at Southern Methodist University in 1993, and a Bachelor of Arts degree from the University of South Carolina in 1990.

After 15+ years at leading firms in Silicon Valley, Boston, and DC, I started Supernova Law to partner with the clients who inspire me most—start-ups, mission-driven companies, B-Corps, and non-profits. My goal is simple: provide accessible, affordable, high-quality legal support to innovators creating positive change for our society. At Supernova Law, your vision and values come first.

Member CA State Bar since 1978. Martindale-Hubbell rated A-v Preeminent. Avvo 5-stars