Whistleblower Sarah Wynn-Williams sues Meta over attempts to ‘silence’ her

Former employee files complaint accusing company of ‘coercive surveillance’ and first amendment violation

The Meta whistleblower Sarah Wynn-Williams is suing the tech company over its efforts to “silence” her.

A 57-page complaint filed to a US district court in California on Thursday argues that an interim arbitration ruling sought by Meta preventing Wynn-Williams from publicising her memoir, Careless People, was “improper and unlawful” and a “blatant violation of the first amendment”. It also accuses the company of “coercive surveillance”.

Wynn-Williams, who between 2011 and 2018 served as director of global public policy at Facebook, published her memoir of her time at the company in March 2025 . The book contained allegations of a toxic internal culture, including sexual harassment and gender-based discriminatory practices. The company has described the book as a “mix of out-of-date and previously reported claims about the company and false accusations about our executives”.

Upon publication, Meta sought an emergency order preventing Wynn-Williams from promoting the book, on the basis that she had signed a severance agreement that included arbitration and non-disparagement clauses.

Thursday’s complaint, accompanied by a 285-page declaration by Wynn-Williams, argues that the severance agreement is unenforceable partly because it was signed under financial duress. It says when Facebook fired Wynn-Williams in August 2017, the company knew her termination would take away “critical employment benefits” – described as “cornerstones of her financial stability” – meaning she “had no choice” but to accept the severance agreement, allowing her to retain many of the benefits and obtain a significant cash payment.

In late May, Wynn-Williams appeared at Hay literary festival in Wales alongside the journalist Carole Cadwalladr and the academic Tim Wu but she did not speak , based on legal advice. Despite this, Meta wrote to the merits arbitrator on 12 June to request that it impose additional sanctions based on her appearance, the complaint reveals.

According to Meta’s arbitration submissions, its representatives have attended Wynn-Williams’ public appearances, “assembled photographs and written records of her movements, and traveled the length of the United Kingdom to do so – including making the long journey to rural Wales for the Hay festival – all to document that at each event, Ms Wynn-Williams said nothing about Meta or her book”, the complaint states. The company has also asked the merits arbitrator to force Wynn-Williams to disclose a list of her planned public appearances, it continues.

After Wynn-Williams’s Hay appearance, sales of her book rose 304.5% week on week . More than 150,000 copies of Careless People have been sold across all formats in the UK since publication, according to Pan Macmillan.

The complaint claims Meta is “pursuing” Wynn-Williams “not only because she refused to bow to the greed and power of Meta, Mr Zuckerberg, and other executives, but also to strike fear into the heart of anyone else who dares to consider speaking the truth about Meta’s unlawful and abusive practices in the public interest”.

In a statement, Meta said: “This former employee is trying to use the legal process to sell books, which an arbitrator already ruled broke the agreement she signed with the company when she accepted a large financial settlement years ago.”

Mike Harpley, the nonfiction publisher at Macmillan and Wynn-Williams’s UK editor, said the filing “details how Meta has enforced its legal order against Sarah Wynn-Williams with a chilling campaign of surveillance. Careless People raises crucial issues for society and Meta’s actions prevent necessary public conversation in the UK and beyond.”

Ravi Naik, the legal director of AWO Legal and Wynn-Williams’ UK lawyer, said Meta had used a private arbitrator to “silence” the whistleblower. “No judge, no trial and no finding that she said anything untrue. Just a secret proceeding between an arbitrator and one of the most powerful corporations in the world.”

He said of Thursday’s complaint: “This is the first time Sarah has been able to explain to the world what has happened to her. The court filings record the facts of what Sarah has been subjected to and lay bare the extent to which Meta has gone to silence her.”