Cerebras IPO: what employees need to know about RSU and option taxes

RSU settlement

The company utilized a staged release schedule for its lockup, with the first significant portion of pre-IPO shares released on September 16, 2026.

Lockup

Staged lockup. Pre-IPO shares release in tranches on fixed dates in August, September and October 2026; everything still locked frees up no later than November 9, 2026.

• Cerebras stock plunges 14% after second earnings report following IPO

  CNBC · Aug 12, 2026

  Cerebras shares fell following the company's second earnings report as a public entity after failing to meet high investor expectations.

  For employees: Employees holding stock or options may see the value of their equity fluctuate significantly in response to market reactions to quarterly earnings performance.

• Kaplan Fox Encourages Investors of Cerebras Systems Inc. (CBRS) Who Suffered Losses to Contact the Firm Regarding a Securities Investigation

  Market Chameleon · Aug 7, 2026

  A law firm has initiated an investigation into Cerebras Systems regarding potential securities violations following recent stock price volatility.

  For employees: While this investigation targets investor losses, it highlights potential legal and regulatory scrutiny that can impact company stock performance and long-term equity value.

• AI Chipmaker Cerebras Raises $5.55 Billion in Year’s Biggest IPO

  Bloomberg · May 13, 2026

  Cerebras Systems completed its initial public offering on the Nasdaq, pricing shares at $185 each to raise $5.55 billion.

  For employees: The IPO provided liquidity for employees holding vested equity, though shares are typically subject to a standard 180-day lockup period preventing immediate sale by insiders.

Sources

• Cerebras Systems Announces Pricing of Initial Public Offering
• Cerebras IPO Prices at $185, Raising $5.55 Billion
• Cerebras Systems Unlocks 14.6 Million Pre-IPO Shares
• Nasdaq Private Market IPO Overview
• Cerebras investor FAQ: lockup releases