HARDING BRIAN E sold $1.5M of UCTT
HARDING BRIAN E (Chief Accounting Officer) sold 16,988 shares of Ultra Clean Holdings, Inc. (UCTT) at an average of $89.47 ($85.86–$91.65, $1.52M total) across 22 trades on 2026-06-04 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The newest disclosed fact is the officer’s open-market sale size, price range, and that it was executed under a pre-arranged Rule 10b5-1 plan.
Market read
A $1.52M insider sale is disclosed, but the 10b5-1 framing suggests limited fundamental implications.
What to watch
Traders should check whether there were multiple insider sales/buys around the same period and whether the officer’s remaining holdings meaningfully changed, rather than treating a single sale as a directional signal.
Background
The article is an SEC Form 4 insider transaction disclosure for Ultra Clean Holdings, Inc. (UCTT).
Ticker impact
SEC Form 4 shows UCTT Chief Accounting Officer Brian E. Harding sold 16,988 shares in an open-market transaction worth about $1.52M under a 10b5-1 plan.
Likely limited near-term impact; any effect is more sentiment-driven than fundamental.
The filing is a routine insider transaction (Form 4) with a stated 10b5-1 plan, which reduces the likelihood of it reflecting new, private negative information.
Market effects
No sector read-through; this is company-specific insider activity without operational or guidance content.
None indicated.
None indicated.
Counterpoint
Because the sale is under a 10b5-1 plan, the market may overreact; the transaction could be purely liquidity/tax-driven rather than a view on fundamentals.
Key entities
- issuerUltra Clean Holdings, Inc.
Company whose shares were sold by an insider in the reported Form 4.
- insiderBrian E. Harding
Chief Accounting Officer who sold 16,988 shares in 22 trades.
- trading mechanismRule 10b5-1 plan
Pre-arranged plan that typically reduces the informational content of insider sales.

