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908 Devices Inc.

For the period ended Dec 31, 2025. Filed Mar 9, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 9, 2026

MASS$11.51+9.0%Stored close · as of Nov 9, 2026

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Item 9B. Other Information

On November 17, 2025, Kevin J. Knopp, Ph.D., the Company’s Chief Executive Officer and Director (Principal Executive Officer), adopted a trading plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act for the sale of the Company’s securities. Dr. Knopp’s trading plan provides for the potential sale of up to 240,000 shares of the Company’s common stock. The trading plan will expire on the earlier of November 16, 2026 and the date when all shares under the trading plan are sold.

On November 24, 2025, Christopher D. Brown, Ph.D., a member of the Company’s Board of Directors, adopted a trading plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act for the sale

of the Company’s securities. Dr. Brown’s trading plan provides for the potential sale of up to 300,000 shares of the Company’s common stock. The trading plan will expire on the earlier of December 31, 2026 and the date when all shares under the trading plan are sold.

On December 9, 2025, Kevin McCallion, Ph.D., the Company’s Vice President of Products and Production, adopted a trading plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act for the sale of the Company’s securities. Dr. McCallion’s trading plan provides for the potential sale of up to 45,438 shares of the Company’s common stock. The trading plan will expire on the earlier of June 30, 2026 and the date when all shares under the trading plan are sold.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.