Xometry (NASDAQ: XMTR) director sells $1.63 million of stock under plan

Posted by Geri Gentry on Oct 3rd, 2026

What happened

Xometry, Inc. (NASDAQ: XMTR) director Randolph Altschuler sold 15,721 shares on 2026-10-01 and 2026-10-02, the filing shows. The shares sold for $101.39 to $106.36 each, and the Form 4 puts the total value at about $1.63 million. After the sales, Altschuler held 423,029 shares.

The filing says the shares were sold in several transactions on both dates. It says the 10/01 sales were under a Rule 10b5-1 plan adopted by Altschuler's spouse at least 90 days earlier. It says the 10/02 sales were under a Rule 10b5-1 plan adopted by Altschuler at least 90 days earlier.

The filing also says the 10/02 shares were sold to cover tax withholding tied to restricted stock unit vesting. The table shows the 10/01 block was indirect and held by a spouse, while the 10/02 block was direct.

Key numbers

Metric	Latest	Source
Shares sold	15,721 shares	SEC Form 4
Sale price range	$101.39 to $106.36 per share	SEC Form 4
Reported total value	about $1.63 million	SEC Form 4
Shares held after sale	423,029 shares	SEC Form 4
Sold as share of pre-trade holding	3.6%	Calculated from SEC Form 4

Why it matters

The 15,721 shares were about 3.6% of the holding before the trade, so most of the position stayed in place. That matters because Xometry's case rests on scale improving marketplace matching and take rate over time, not on one insider trade. OptimistFi's case is that the marketplace can standardize fragmented custom manufacturing procurement and eventually produce self-funded profit.

The filing is mixed. It shows a director cutting exposure, but the trades were automatic under Rule 10b5-1 plans. Part of the 10/02 sale also covered tax withholding tied to restricted stock units. The 2026-10-01 sales were of shares held indirectly by a spouse, so the trade says less about Altschuler's direct exposure. After the sales, the stake still stands at 423,029 shares.

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What's next

Xometry's next quarterly report is the next scheduled update on the business. If it shows better matching, a steadier take rate or progress toward self-funded profit, that would strengthen OptimistFi's case. Softer results would leave this insider sale as a routine Form 4 event rather than a change in the operating story. That report will matter more than this filing for judging the business thesis.

Sources

SEC Form 4 — Xometry, Inc. Form 4 for Randolph Altschuler filed on 2026-10-02

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Originally published on OptimistFi, evidence-first equity research. More at optimistfi.com.