A Securities Expert Who Survives Daubert — and Explains It to a Jury
When the outcome turns on whether the jury understands Rule 144, Regulation D preemption, or what constitutes an unregistered broker-dealer, the expert you retain has to do two things: hold up under cross-examination and make the rule intelligible to a non-specialist. Rick Weintraub does both.
Practitioner Credentials, Not Consulting Credentials
Most expert witnesses in securities matters are former regulators or academics. Rick Weintraub is a practicing securities attorney with nearly 50 years of active transactional experience — admitted to the bar in 1978, lead counsel on more than 500 public and private offerings, and a longtime instructor of securities law at UCLA, UCSD, and the University of San Diego.
That distinction matters in court. A Daubert challenge targets the reliability of the methodology and the qualifications of the expert. An attorney who has structured, negotiated, and closed securities transactions for five decades — and who has taught the governing rules to lawyers at the continuing-legal-education level — presents a materially different qualification profile than a consultant who last touched a live deal years ago.
Weintraub Law Group serves retaining counsel nationwide. Engagement is available for both plaintiff and defense matters.
Documented Testimony on Complex Securities Issues
Rick Weintraub has provided expert testimony and written expert reports on the following subjects:
- Rule 144 — holding periods, affiliate status, volume limitations, and the conditions governing resale of restricted and control securities
- Regulation D preemption under Section 18 of the Securities Act — federal preemption of state blue sky registration requirements for covered securities
- Demand futility in shareholder derivative actions — the standard for excusing pre-suit demand under Delaware and federal law
- Unregistered broker-dealer determination — the statutory and regulatory criteria for broker-dealer status and the consequences of operating without registration
Each of these areas involves layered federal statutes, SEC rules, and case law that non-specialist judges and jurors encounter without prior context. Rick's background as a university instructor and NBI CLE presenter means he has spent years developing the vocabulary and structure to make these rules accessible — without oversimplifying them in ways opposing counsel can exploit.
Built for Retention, Deposition, and Trial
Retaining counsel needs an expert who performs at every stage of the engagement — not just on paper.
Step 1: Case Assessment and Conflict Check
We review the matter, confirm there is no conflict, and assess whether the facts and legal issues fall within Rick's documented areas of testimony. We do not accept engagements outside our core competency.
Step 2: Expert Report
Rick prepares a written report meeting the requirements of Federal Rule of Civil Procedure 26(a)(2)(B) — including a complete statement of opinions, the basis and reasons for each, the data and materials considered, and any exhibits to be used. Reports are drafted to withstand Daubert scrutiny from the first page.
Step 3: Deposition
Rick is available for deposition testimony. His testimony reflects the same directness and precision that characterizes his written reports — no hedging, no overreach.
Step 4: Trial Testimony
Rick has testified at trial and is available for in-person or remote testimony depending on jurisdiction and scheduling. His experience as a classroom instructor translates directly to the stand: he is accustomed to explaining complex rules to audiences who are encountering them for the first time.
Who Retains Us
Our expert witness engagements come primarily from two categories of retaining counsel:
- Transactional and securities litigators who need a practitioner with active market experience to rebut a competing expert or establish the standard of care
- Criminal defense attorneys in SEC enforcement matters who need qualified testimony on the technical elements of the alleged violation
- For criminal defense counsel specifically, we have a dedicated page covering our approach to SEC criminal case testimony.
Why Retaining Counsel Chooses Weintraub
- Nearly 50 years in active securities practice — not a former regulator, not a retired academic
- Lead counsel on 500+ public and private offerings, giving testimony a transactional foundation that holds under cross-examination
- Documented testimony record on Rule 144, Reg D preemption, demand futility, and unregistered broker-dealer status
- Securities law instructor at UCLA, UCSD, and the University of San Diego — qualified to explain complex rules clearly and accurately
- AV-rated by Martindale-Hubbell — the peer review standard for legal ability and professional conduct
Available nationwide for written reports, deposition, and trial testimony
Frequently Asked Questions About Retaining a Securities Expert Witness
What makes a securities expert witness Daubert-proof?
Daubert requires that expert testimony be based on sufficient facts or data, be the product of reliable principles and methods, and reflect a reliable application of those methods to the facts of the case. Credentials matter — courts look at whether the expert has direct, current experience with the subject matter, not just general familiarity. An attorney with nearly 50 years of active securities practice and a documented record of prior testimony on the specific issues in your case presents a substantially stronger Daubert profile than a generalist consultant.
What is the difference between a securities expert witness who is an attorney and one who is not?
An attorney who practices securities law every day understands the rules as they apply in real transactions under real market conditions — not as they appear in treatises or regulatory guidance. When opposing counsel challenges the basis for an opinion, a practicing attorney can point to current, specific transactional experience. That grounding is harder to attack than academic or consulting credentials alone.
Can a securities expert witness help in an SEC criminal case?
Yes. Expert testimony in SEC criminal matters often turns on highly technical questions — whether a transaction constituted an unregistered offering, whether a person met the statutory definition of a broker-dealer, or whether a resale complied with Rule 144. These are issues where a practicing securities attorney with documented testimony experience can provide the jury with the context they need to evaluate the government's theory. See our page on SEC criminal case testimony for more detail.
Do you accept engagements outside California?
Yes. We serve retaining counsel nationwide. Securities law is primarily federal — the statutes, rules, and case law that govern most expert testimony in this area apply across jurisdictions. We have provided expert reports and testimony in matters outside California and are available for remote deposition and trial testimony where permitted.
How early in a case should we retain a securities expert witness?
As early as possible. Retaining an expert at the case assessment stage allows the expert report to be developed with adequate lead time, reduces scheduling conflicts for deposition and trial, and gives retaining counsel the benefit of the expert's analysis before discovery closes. Waiting until the expert disclosure deadline creates unnecessary risk.
What areas of securities law does Rick Weintraub testify on?
Rick's documented testimony areas include Rule 144 restricted and control securities, Regulation D preemption under Section 18 of the Securities Act, demand futility in shareholder derivative actions, and unregistered broker-dealer determinations. Retaining counsel with questions about whether a specific issue falls within his expertise should contact us directly for a preliminary assessment.
Rick Weintraub has practiced securities and M&A law for nearly 50 years, earning an AV rating from Martindale-Hubbell and recognition among top San Diego and California boutique firm attorneys. He has served as lead counsel on more than 500 public and private offerings and has provided expert testimony in federal matters involving complex securities law questions. Learn more about his background and credentials on his attorney profile.
Retaining counsel seeking a securities expert witness with a documented testimony record and active transactional credentials can reach us by phone or email. We respond promptly and conduct an initial conflict check before any engagement discussion.
Retain a Securities Expert With a Documented Record
Rick Weintraub has practiced securities law for nearly 50 years, with documented testimony on Rule 144, Regulation D preemption, demand futility, and unregistered broker-dealer determination. Retaining counsel — civil or criminal, plaintiff or defense — can reach us directly to discuss whether he is the right fit for your case.