Director Mark Spoto granted options and RSUs at 908 Devices (MASS)

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

908 Devices Inc. director Mark Spoto reported multiple equity compensation transactions. He received a grant of 6,209 stock options to buy Common Stock at an exercise price of $8.22 per share, which vest in substantially equal monthly installments over the 12 months following June 11, 2026 and expire on June 10, 2036.

He also received 13,656 Restricted Stock Units, each representing a contingent right to one share of Common Stock, that become fully vested on June 11, 2027 or the day before the 2027 annual stockholder meeting, with prorated vesting if his service ends earlier. Separately, 14,083 RSUs became fully vested on June 10, 2026 and were converted into 14,083 Common Stock shares, bringing his direct Common Stock holdings to 89,346 shares.

In addition, 3,599 Common Stock shares are held indirectly through Razor's Edge Ventures, LLC, where he is a managing member and may be deemed a beneficial owner, though he disclaims beneficial ownership beyond his pecuniary interest.

Insider Trade Summary

14,083 shares exercised/converted

Mixed 5 txns

Insider Spoto Mark

Role null

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	13,656	$0.00	--
Grant/Award	Stock Option (option to buy)	6,209	$0.00	--
Exercise	Restricted Stock Units	14,083	$0.00	--
Exercise	Common Stock	14,083	$0.00	--
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Units — 13,656 shares (Direct, null); Stock Option (option to buy) — 6,209 shares (Direct, null); Common Stock — 89,346 shares (Direct, null); Common Stock — 3,599 shares (Indirect, See footnote)

Footnotes (1)

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.001, when vested. These securities are owned directly by Razor's Edge Ventures, LLC. The reporting person is a managing member of Razor's Edge Ventures, LLC and may be deemed to be the beneficial owner of the securities held by Razor's Edge Ventures, LLC. The reporting person disclaims beneficial ownership of the securities held by Razor's Edge Ventures, LLC except to the extent of his pecuniary interest therein. The RSUs became fully vested on June 10, 2026, the day prior to the 2026 Annual Meeting of the Stockholders of 908 Devices Inc. The RSUs have no expiration date. 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. 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 options Option exercise price: $8.22 per share Option expiration: June 10, 2036 +5 more

8 metrics

Stock options granted 6,209 options Grant on June 11, 2026 to buy Common Stock

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

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

RSUs granted 13,656 RSUs Grant on June 11, 2026, each for one Common share

RSU vesting date June 11, 2027 New RSUs vest on this date or day before 2027 meeting

RSUs converted to shares 14,083 shares RSUs vested and converted on June 10, 2026

Direct Common Stock holdings 89,346 shares Direct holdings after June 10, 2026 transactions

Indirect Common Stock holdings 3,599 shares Held via Razor's Edge Ventures, LLC with beneficial ownership disclaimer

Key Terms

Restricted Stock Units, Stock Option (option to buy), beneficial owner, pecuniary interest, +1 more

5 terms

Restricted Stock Units financial

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

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.

Stock Option (option to buy) financial

"Stock Option (option to buy) with an exercise price of $8.22 per share"

beneficial owner financial

"may be deemed to be the beneficial owner of the securities held by Razor's Edge Ventures, LLC"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

pecuniary interest financial

"disclaims beneficial ownership of the securities held ... except to the extent of his pecuniary interest therein"

vesting financial

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

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

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Form 4 Insider Transactions: What Each Field Means →

06/12/2026 - 04:45 PM

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^*

Spoto Mark

(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)
06/10/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/10/2026		M		14,083	A	⁽¹⁾	89,346	D
Common Stock								3,599	I	See footnote⁽²⁾

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽¹⁾	06/10/2026		M			14,083	⁽³⁾	⁽³⁾	Common Stock	14,083	$0	0	D
Restricted Stock Units	⁽¹⁾	06/11/2026		A		13,656		⁽⁴⁾	⁽⁴⁾	Common Stock	13,656	$0	13,656	D
Stock Option (option to buy)	$8.22	06/11/2026		A		6,209		⁽⁵⁾	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. These securities are owned directly by Razor's Edge Ventures, LLC. The reporting person is a managing member of Razor's Edge Ventures, LLC and may be deemed to be the beneficial owner of the securities held by Razor's Edge Ventures, LLC. The reporting person disclaims beneficial ownership of the securities held by Razor's Edge Ventures, LLC except to the extent of his pecuniary interest therein.

3. The RSUs became fully vested on June 10, 2026, the day prior to the 2026 Annual Meeting of the Stockholders of 908 Devices Inc. The RSUs have no expiration date.

4. 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.

5. 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)

Source: View Original Filing on SEC EDGAR

FAQ

What equity awards did 908 Devices (MASS) director Mark Spoto receive?

Mark Spoto received a grant of 6,209 stock options and 13,656 Restricted Stock Units. The options carry an $8.22 exercise price, while the RSUs each represent one future share of Common Stock, subject to vesting conditions tied to service and future dates.

When do Mark Spoto’s new RSUs in 908 Devices (MASS) vest?

The 13,656 RSUs become fully vested on June 11, 2027 or the day before the 2027 annual stockholder meeting. Vesting requires his continued service, with a prorated number vesting if he leaves before the applicable vesting date under the disclosed terms.

How many 908 Devices (MASS) shares did RSUs convert into for Mark Spoto?

On June 10, 2026, 14,083 Restricted Stock Units became fully vested and converted into 14,083 shares of Common Stock. This RSU-to-share conversion increased his directly held Common Stock position as part of his disclosed equity compensation package.

What are the terms of Mark Spoto’s new 908 Devices (MASS) stock options?

He was granted 6,209 stock options with an $8.22 per share exercise price. These options vest in substantially equal monthly installments over 12 months following June 11, 2026 and are exercisable until their stated expiration on June 10, 2036, subject to continued service.

How many 908 Devices (MASS) shares does Mark Spoto hold directly after these transactions?

Following the reported transactions, he directly holds 89,346 shares of Common Stock. This total reflects the conversion of 14,083 vested RSUs into an equal number of shares, in addition to any previously held direct Common Stock disclosed in this Form 4 filing.

What indirect 908 Devices (MASS) holdings are associated with Mark Spoto?

The filing shows 3,599 shares of Common Stock held indirectly through Razor's Edge Ventures, LLC. Spoto is a managing member and may be deemed a beneficial owner but disclaims beneficial ownership except to the extent of his pecuniary interest in that entity’s holdings.