Hwang Donghyun Thomas, Senior Vice President of Global Sales at MACOM Technology Solutions (MTSI), has filed 54 Form 4 transactions, all concentrated in a single company. The pattern is unambiguous: zero open-market purchases, zero recent buys, and 24 recent open-market sales totaling roughly $2.1 million. Across all filings, his total sell value reached $5.21 million, dwarfing the $20,451 in acquired shares, which came exclusively from a single grant (code "A") on May 15, 2026, valued at $11,741. This is a compensation event, not a conviction buy.
The selling cadence is steady and recurring. On June 25, 2026, Hwang executed seven separate "S" trades ranging from $3,459 to $160,457, aggregating approximately $658,650. A month earlier, on May 18, he sold five tranches totaling $430,342, and on April 30, six sales brought in $889,806. The largest single-day total came on February 2, 2026, when six sales added up to $635,871. These are not sporadic liquidations but a consistent monthly pattern of open-market disposals, with individual transactions sized between a few thousand and over $400,000.
The data shows a clear directional bias: Hwang is a persistent seller of MTSI stock, with no offsetting purchases. The absence of any "P" code filings—the only transaction type indicating voluntary conviction—reinforces that his activity is entirely on the sell side. While the grant on May 15 provided a small inflow of shares, it was immediately followed by a wave of sales on May 18, suggesting the compensation was quickly converted to cash. For investors tracking insider behavior, the message is one of steady distribution rather than accumulation.
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