Xometry (XMTR) CEO sells 5,721 shares under Rule 10b5-1 plan

Rhea-AI Filing Summary

Xometry, Inc. Chief Executive Officer Randolph Altschuler sold 5,721 shares of Class A Common Stock in open-market transactions. The sales on 2026-04-02 were executed under a pre-arranged Rule 10b5-1 trading plan and to cover tax withholding obligations related to vesting restricted stock units.

The shares were sold at weighted average prices of about $40.47, $41.89, and $42.48, within ranges from $40.19 to $42.315. After these sales, Altschuler held 434,472 shares of Class A Common Stock directly and 1,475,311 shares of Class B Common Stock directly, along with additional indirect holdings through family trusts and a spouse account.

Insider Trade Summary 10b5-1

Net Seller: 5,721 shares ($238,655)

Net Sell 10 txns

Insider Altschuler Randolph

Role Chief Executive Officer

Sold 5,721 shs ($239K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	763	$40.4719	$31K
Sale	Class A Common Stock	4,843	$41.8934	$203K
Sale	Class A Common Stock	115	$42.48	$5K
holding	Class A Common Stock	--	--	--
holding	Class A Common Stock	--	--	--
holding	Class A Common Stock	--	--	--
holding	Class A Common Stock	--	--	--
holding	Class A Common Stock	--	--	--
holding	Class A Common Stock	--	--	--
holding	Class B Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 439,430 shares (Direct); Class A Common Stock — 591,270 shares (Indirect, Held by spouse); Class B Common Stock — 1,475,311 shares (Direct)

Footnotes (1)

1. Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person at least 90 days prior to the trading date. These shares were sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.19 to $41.06, inclusive. The reporting person undertakes to provide to Xometry, Inc., any security holder of Xometry, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price in the ranges set forth in footnotes (3) and (4) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.32 to $42.315, inclusive.

Key Figures

Shares sold: 5,721 shares Sale price tranche 1: $40.4719/share Sale price tranche 2: $41.8934/share +5 more

8 metrics

Shares sold 5,721 shares Class A Common Stock sold on April 2, 2026

Sale price tranche 1 $40.4719/share Weighted average price for 763 shares sold

Sale price tranche 2 $41.8934/share Weighted average price for 4,843 shares sold

Sale price tranche 3 $42.4800/share Weighted average price for 115 shares sold

Direct Class A holding 434,472 shares Class A Common Stock held directly after transactions

Direct Class B holding 1,475,311 shares Class B Common Stock held directly as of April 2, 2026

Spouse indirect holding 591,270 shares Class A Common Stock held indirectly by spouse

Altschuler Family Trust (2020) 475,248 shares Class A Common Stock held indirectly by family trust

Key Terms

Rule 10b5-1 trading plan, restricted stock units, weighted average price, Class A Common Stock, +2 more

6 terms

Rule 10b5-1 trading plan financial

"transaction that was effected automatically pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock units financial

"tax withholding obligations in connection with the vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Class A Common Stock financial

"security_title": "Class A Common Stock""

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

Class B Common Stock financial

"security_title": "Class B Common Stock""

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

tax withholding obligations financial

"sold by the reporting person to cover tax withholding obligations"

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Altschuler Randolph

(Last) (First) (Middle)

C/O XOMETRY, INC.

6116 EXECUTIVE BLVD, SUITE 800

(Street)

NORTH BETHESDA MARYLAND 20852

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Xometry, Inc. [ XMTR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/02/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	04/02/2026		S(1)(2)		763	D	$40.4719(3)	439,430	D
Class A Common Stock	04/02/2026		S(1)(2)		4,843	D	$41.8934(4)	434,587	D
Class A Common Stock	04/02/2026		S(1)(2)		115	D	$42.48	434,472	D
Class A Common Stock								591,270	I	Held by spouse
Class A Common Stock								85,582	I	Held by the 2021 Tigers Trust
Class A Common Stock								475,248	I	Held by the Altschuler Family Trust (2020)
Class A Common Stock								324,533	I	Held by The Matthew Sladkin Altschuler 2012 Trust
Class A Common Stock								324,533	I	Held by The Noah Sladkin Altschuler 2012 Trust
Class A Common Stock								324,533	I	Held by The Sasha Sladkin Altschuler 2012 Trust
Class B Common Stock								1,475,311	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person at least 90 days prior to the trading date.

2. These shares were sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.19 to $41.06, inclusive. The reporting person undertakes to provide to Xometry, Inc., any security holder of Xometry, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price in the ranges set forth in footnotes (3) and (4) to this Form 4.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.32 to $42.315, inclusive.

Remarks:

	/s/ Kristie Scott, Attorney-in-Fact	04/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Xometry (XMTR) CEO report on this Form 4?

Xometry CEO Randolph Altschuler reported selling 5,721 shares of Class A Common Stock. The sales were open-market transactions on April 2, 2026, executed under a Rule 10b5-1 trading plan and connected to tax withholding from restricted stock unit vesting.

At what prices did the Xometry (XMTR) CEO sell his Class A shares?

The CEO’s sales occurred at weighted average prices of about $40.47, $41.89, and $42.48 per share. Footnotes state individual trades were executed in ranges from $40.19 to $42.315, with full price breakdowns available upon request.

Why did the Xometry (XMTR) CEO sell 5,721 shares in this filing?

The filing states the shares were sold to cover tax withholding obligations tied to vesting restricted stock units. A footnote also explains the sales were executed automatically under a pre-arranged Rule 10b5-1 trading plan adopted at least 90 days earlier.

How many Xometry (XMTR) Class A shares does the CEO hold after these sales?

After the reported transactions, Randolph Altschuler held 434,472 shares of Xometry Class A Common Stock directly. The Form 4 also lists several indirect Class A positions held by his spouse and multiple family trusts, reflecting additional exposure beyond his direct holdings.

What are the Xometry (XMTR) CEO’s Class B Common Stock holdings in this Form 4?

The Form 4 shows Randolph Altschuler directly holding 1,475,311 shares of Class B Common Stock. This Class B position is in addition to his direct Class A holdings and the indirect Class A holdings reported for his spouse and various family trusts.

Were the Xometry (XMTR) CEO’s stock sales discretionary or pre-planned?

The filing indicates the sales were effected automatically under a Rule 10b5-1 trading plan adopted at least 90 days before trading. Such plans pre-schedule trades, making the timing more routine and less reflective of short-term views on Xometry’s share price.