• Video
  • Shop
  • Culture
  • Family
  • Wellness
  • Food
  • Living
  • Style
  • Travel
  • News
  • Book Club
  • Newsletter
  • Privacy Policy
  • Your US State Privacy Rights
  • Children's Online Privacy Policy
  • Interest-Based Ads
  • Terms of Use
  • Do Not Sell My Info
  • Contact Us
  • © 2026 ABC News
  • News

Theranos founder Elizabeth Holmes owns key allegations during testimony in criminal trial

3:31
Theranos founder Elizabeth Holmes takes stand
Ethan Swope/Getty Images
ByMiles Cohen
November 24, 2021, 5:09 PM

SAN JOSE -- Theranos founder Elizabeth Holmes placed the logos of two major drug companies on blood-testing validation studies, which she then sent to Walgreens executives ahead of their lucrative retail partnership, she told jurors on Tuesday. Theranos also sent the reports to investors who bought millions of dollars of her start-up's stock.

The embattled former CEO also acknowledged that Theranos did not publicly disclose it was running blood tests on third-party machines rather than the devices the company had pitched to potential investors and VIPs during demonstrations, chalking it up to trade secrets.

Holmes made the bombshell admissions before a packed courtroom in California's Silicon Valley during her criminal fraud trial, where prosecutors have previously argued that she failed to tell investors about the third-party machines and doctored documents, which led them to believe the pharmaceutical companies had endorsed Theranos and its blood-testing technology.

Theranos founder and former CEO Elizabeth Holmes, center, arrives for her trial with her mother Noel Holmes and partner Billy Evans at the Robert F. Peckham Federal Building, Nov. 23, 2021, in San Jose, Calif.
Ethan Swope/Getty Images

Witnesses from both Pfizer and Schering-Plough Corporation testified earlier in the 12-week trial that Holmes did not have permission to use their trademarks on the studies.

But Holmes told jurors on Tuesday that she did not conceal her use of the logos, saying she used them "because this work was done in partnership with those companies and I was trying to convey that."

"I wish I had done it differently," Holmes said.

Related Articles

MORE: Theranos founder Elizabeth Holmes returns to the stand in fraud trial

Holmes, a 37-year-old native of Washington, D.C, is charged with nine counts of wire fraud and two counts of conspiracy to commit wire fraud. She could face decades behind bars if convicted.

She remains on direct examination and will continue her testimony Monday, after the long Thanksgiving holiday weekend.

Members of both the press and public began lining up outside the Robert F. Peckham Federal Courthouse in San Jose early Tuesday at around 2 a.m. PT to claim one of only 34 seats inside the courtroom to see Holmes take the stand for a third day. They stood outside the building for hours before Holmes, wearing a forest green dress and face mask, entered the courtyard just after 8 a.m. PT hand-in-hand with her mother, Noel Holmes, and her partner, Billy Evans.

Theranos founder and former CEO Elizabeth Holmes along with her partner Billy Evans depart the Robert F. Peckham Federal Building, Nov. 23, 2021, in San Jose, Calif.
Ethan Swope/Getty Images

While testifying Tuesday, Holmes said that in 2013, her company grappled with the high number of blood samples returning to their central lab. So they came up with inventions that allowed them to run the drops of blood originally intended for Theranos machines on modified third-party devices, such as the Siemens ADVIA.

Holmes admitted to jurors that she did not explicitly tell investors, or even Walgreens executives, "in this way" about these third-party devices Theranos was running samples on, per advice from her company's legal counsel.

"If we disclosed that information, we would lose trade secret protection," she said. "The big medical device companies like Siemens could easily reproduce what we had done if they knew what we were doing. They had more engineers than we did and a lot more resources."

Related Articles

MORE: Podcast: 'The Dropout: Elizabeth Holmes on Trial'

Throughout her testimony, Holmes only mentioned the name of her ex-boyfriend and former Theranos COO Ramesh "Sunny" Balwani a handful of times. But when she did, she talked about how he was in charge of financial projections and responsible for handling some investors.

Balwani was charged as Holmes’ co-conspirator, but their cases were severed after Holmes claimed they had an "abusive intimate-partner relationship," according to court documents. Balwani has denied the allegations.

Up Next in News—

Pilot killed in Florida plane crash hailed as hero

April 21, 2026

Athlete drowns during Ironman Texas triathlon

April 20, 2026

Skydiver speaks out after crashing into Virginia Tech stadium scoreboard

April 20, 2026

Gas station clerk speaks out after foiling alleged kidnapping

April 15, 2026

Shop GMA Favorites

ABC will receive a commission for purchases made through these links.

Sponsored Content by Taboola

The latest lifestyle and entertainment news and inspiration for how to live your best life - all from Good Morning America.
  • Contests
  • Terms of Use
  • Privacy Policy
  • Do Not Sell My Info
  • Children’s Online Privacy Policy
  • Advertise with us
  • Your US State Privacy Rights
  • Interest-Based Ads
  • About Nielsen Measurement
  • Press
  • Feedback
  • Shop FAQs
  • ABC News
  • ABC
  • All Videos
  • All Topics
  • Sitemap

© 2026 ABC News
  • Privacy Policy— 
  • Your US State Privacy Rights— 
  • Children's Online Privacy Policy— 
  • Interest-Based Ads— 
  • Terms of Use— 
  • Do Not Sell My Info— 
  • Contact Us— 

© 2026 ABC News