CEO Sells $45.6M in Tower Semiconductor Shares Under 10b5-1 Plan
TSEM has more than doubled off its 52-week low of $45.51.
Summary
Tower Semiconductor CEO Russell Ellwanger sold $45.6 million in shares under a pre-arranged 10b5-1 plan, reducing his stake to 707,298 shares.
Key Events · Ownership and Investor Activity · TSEM
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CEO Sells $45.6M in Shares
Russell Ellwanger sold 181,535 ordinary shares for $45,559,756.08 across 27 transactions on August 10-11, 2026, at prices ranging from $243.32 to $263.78.
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10b5-1 Plan Execution
The sales were executed under a pre-arranged, pre-scheduled 10b5-1 trading plan established on March 12, 2026, when the CEO was not in possession of material non-public information.
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Post-Sale Ownership
Following the transactions, Ellwanger directly holds 707,298 shares, down from 888,833 shares before the sales.
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Context: Strong Recent Performance
The sale follows record Q2 results and a $3 billion Japan capacity expansion announcement, with the stock trading near $269.
Analysis · TSEM · Manufacturing
CEO Russell Ellwanger sold 181,535 shares for $45.6 million over two days, reducing his direct holdings to 707,298 shares. The sale was executed under a pre-arranged 10b5-1 plan established in March 2026, which mitigates the signal of insider conviction. However, the size of the sale — roughly 0.15% of the company's market cap — is notable for a CEO, especially following a strong earnings report and a $3 billion Japan expansion announcement. The sale is not a new bearish signal given the plan's pre-arranged nature, but it does represent a significant liquidity event by the top executive.
How filings like this one have moved
In the 30 days to Oct 19, 2026, 29.4% of the 1387 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.51%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, TSEM was trading at $269.11 on NASDAQ in the Manufacturing sector, with a market capitalization of approximately $30.4B. The 52-week trading range was $45.51 to $319.94. This filing was assessed with neutral market sentiment and an importance score of 7 out of 10.