908 Devices director granted options and RSUs

908 Devices Inc. director Brandi C. Vann received new equity awards consisting of stock options and restricted stock units.

Rhea-AI Filing Summary

908 Devices Inc. director Brandi C. Vann received new equity awards consisting of stock options and restricted stock units. The filing shows a grant of options to buy 6,209 shares of Common Stock at an exercise price of $8.22 per share, expiring on June 10, 2036. These options vest in substantially equal monthly installments over the 12 months following June 11, 2026, contingent on continued service.

Vann also received 13,656 Restricted Stock Units, each representing a contingent right to one share of Common Stock. The RSUs become fully vested on June 11, 2027 or the day prior to the 2027 Annual Meeting of Stockholders, whichever occurs first, with prorated vesting if service ends earlier. These are compensation-related awards rather than open-market purchases or sales.

Insider Trade Summary

Grant/Award: 19,865 shares

Grant/Award 2 txns

Insider Vann Brandi C

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	13,656	$0.00	$0.00
Grant/Award	Stock Option (option to buy)	6,209	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 13,656 contracts (Direct); Stock Option (option to buy) — 6,209 contracts (Direct)

Footnotes (3)

1. F1. Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested.
2. F2. The RSUs become fully vested on June 11, 2027 or the day prior to the 2027 Annual Meeting of the Stockholders of 908 Devices Inc., whichever occurs first, subject to the reporting person's continued service through the applicable vesting date, provided that, if the reporting person terminates their service for any reason, then a prorated number of RSUs will vest. The RSUs have no expiration date.
3. F3. The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following June 11, 2026, subject to the reporting person's continued service through the applicable vesting date.

Key Figures

Stock options granted: 6,209 shares Option exercise price: $8.22 per share Option expiration date: June 10, 2036 +3 more

6 metrics

Stock options granted 6,209 shares Option grant to director Brandi C. Vann on June 11, 2026

Option exercise price $8.22 per share Exercise price for 6,209 stock options

Option expiration date June 10, 2036 Expiration of granted stock options

RSUs granted 13,656 units Restricted Stock Units awarded on June 11, 2026

RSU vesting date June 11, 2027 Full vesting or day prior to 2027 Annual Meeting

RSU share ratio 1 share per RSU Each RSU represents a right to one share of Common Stock

Key Terms

Restricted Stock Unit ("RSU"), Stock Option (option to buy), vested, Annual Meeting of the Stockholders, +1 more

5 terms

Restricted Stock Unit ("RSU") financial

"Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share"

Stock Option (option to buy) financial

"security_title: Stock Option (option to buy)"

vested financial

"The RSUs become fully vested on June 11, 2027 or the day prior"

Annual Meeting of the Stockholders financial

"or the day prior to the 2027 Annual Meeting of the Stockholders of 908 Devices Inc."

exercise price financial

"conversion_or_exercise_price: 8.2200"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did 908 Devices (MASS) director Brandi C. Vann report in this Form 4?

Brandi C. Vann reported receiving new equity awards from 908 Devices. The filing shows grants of stock options for 6,209 shares and 13,656 Restricted Stock Units, both tied to continued service and future vesting dates rather than immediate stock purchases or sales.

How many stock options were granted to Brandi C. Vann by 908 Devices (MASS)?

Brandi C. Vann was granted stock options covering 6,209 shares of 908 Devices Common Stock. These options have an exercise price of $8.22 per share and vest in substantially equal monthly installments over 12 months following June 11, 2026, contingent on continued service.

What are the terms of the RSU grant to Brandi C. Vann at 908 Devices (MASS)?

Vann received 13,656 Restricted Stock Units from 908 Devices. Each RSU represents a right to one share of Common Stock. The RSUs fully vest on June 11, 2027 or the day before the 2027 Annual Meeting, with prorated vesting if service ends earlier.

Is Brandi C. Vann buying or selling 908 Devices (MASS) shares in this Form 4?

The Form 4 shows no open-market buying or selling of 908 Devices shares. Instead, it reports compensation-related acquisitions: a grant of stock options and a grant of Restricted Stock Units that vest over time based on continued service with the company.

When do Brandi C. Vann’s stock options at 908 Devices (MASS) expire and vest?

The stock options granted to Vann expire on June 10, 2036. They become vested and exercisable in substantially equal monthly installments over the 12 months following June 11, 2026, provided Vann continues serving the company through each vesting date.

When will Brandi C. Vann’s RSUs from 908 Devices (MASS) vest?

Vann’s 13,656 Restricted Stock Units vest on June 11, 2027 or the day prior to the 2027 Annual Meeting of Stockholders, whichever occurs first. If service ends earlier, a prorated number of RSUs will vest, and the RSUs have no expiration date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/12/2026 - 04:52 PM EDT Learn about SEC filing dates

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).

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^*

Vann Brandi C

(Last) (First) (Middle)

C/O 908 DEVICES INC.

44 THIRD AVENUE

(Street)

BURLINGTON MASSACHUSETTS 01803

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
908 Devices Inc. [ MASS ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/11/2026

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

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
Restricted Stock Units	(1)	06/11/2026		A		13,656		(2)	(2)	Common Stock	13,656	$0	13,656	D
Stock Option (option to buy)	$8.22	06/11/2026		A		6,209		(3)	06/10/2036	Common Stock	6,209	$0	6,209	D

Explanation of Responses:

1. Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested.

2. The RSUs become fully vested on June 11, 2027 or the day prior to the 2027 Annual Meeting of the Stockholders of 908 Devices Inc., whichever occurs first, subject to the reporting person's continued service through the applicable vesting date, provided that, if the reporting person terminates their service for any reason, then a prorated number of RSUs will vest. The RSUs have no expiration date.

3. The shares underlying the option become vested and exercisable in substantially equal monthly installments over the 12 months following June 11, 2026, subject to the reporting person's continued service through the applicable vesting date.

	/s/ Mark S. Levine, Attorney-in-Fact	06/12/2026
	** 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)