Robert Mionis, chief executive officer of Celestica (CLS), has filed 127 Form 4 transactions across two companies, with a total sell value of $193.3 million and zero open-market purchases. The pattern is one-directional: every trade in the recent window is a sale, and the aggregate data shows no buy-side activity at all. The only non-sale event in the recent filings is a grant of shares on August 11, 2026, valued at $0, which is compensation rather than a conviction purchase.
The recent trading cluster is concentrated in CLS. On August 13, 2026, Mionis executed six separate sales totaling roughly $8.5 million, with individual values ranging from $95,353 to $2,001,494. The larger block, on August 5, 2026, comprised 18 sales that together exceeded $19 million. That day's transactions included several seven-figure disposals, the largest being $4,956,070, followed by $2,471,383 and $2,141,303. Smaller sales of $15,140 and $18,332 also appear, indicating a mix of large and modest liquidations within the same session.
The August 5 cluster is notable for its density: 18 separate sale filings on a single date, all in CLS. The August 13 cluster adds another six. Across the entire filing history, Mionis has never reported a purchase, and the total acquired value is zero. The direction is unambiguous. The sales are open-market transactions, code S, which means they were executed on the exchange rather than returned to the issuer. The dollar figures are large, but the filings do not indicate whether the sales follow a pre-arranged plan, and the data offers no basis to infer timing or motive.
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