Dyckerhoff Stefan A has filed 56 Form 4 transactions, all in a single company, Astera Labs (ALAB). The pattern is one-sided. Across all filings, there are zero open-market purchases and zero recent buys. The total value of open-market sales is $38,155,425.13, while the only acquisition, a grant or award worth $21,186.76 on October 1, 2026, is compensation, not a purchase.
The selling has been steady and clustered. On October 7, 2026, Dyckerhoff sold ALAB shares in three transactions totaling roughly $4.7 million, with the largest single sale at $3,133,707.98. A month earlier, on September 2, 2026, there were 11 separate sale filings, ranging from $8,856.06 to $1,486,333.70, for a combined value near $3.5 million. The August 6, 2026 cluster included nine sales, the biggest at $1,642,386.20, adding another $4.5 million.
The recent direction is unambiguous: 24 open-market sales in the last three months against no purchases. The dollar values are not trivial, with several individual transactions above $1 million. The compensation grant on October 1 is the only non-sale event in the recent window, and it is a standard award. The data shows a consistent seller, with the most recent activity on October 7 being the largest single-day total in the period covered.
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