NASDAQ:MASS

908 Devices Stock Insider Trading

Healthcare > Medical - Devices

Buy MASS

*Your capital is at risk

$8.01

+0.370 (+4.84%)

At Close: Jul 31, 2026

908 Devices Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -36.40. In total, the insiders bought 1.55M and sold 585.41K MASS shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-36.40
● Buy	1.55M shares
● Sell	585.41K shares
65% Buy Activity Moderate Negative Correlation
Sell Signal Medium Confidence May 28, 2026 Analysis Breakdown: Supported by a negative Insider Power Score of -36.4. Partially supported by a negative historical correlation. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Mar 02, 2026 Buy	Common Stock M-Exempt	Mccallion Kevin J. SVP, Products And Production	Officer	7 Value: $7
Mar 02, 2026 Sell	Common Stock S-Sale	Mccallion Kevin J. SVP, Products And Production	Officer	7 Value: $49
Feb 26, 2026 Buy	Stock Option (right to buy)	Kenneweg John SVP, Sales & Product Marketing	Officer	27 656 Value: $26.5K
Feb 26, 2026 Buy	Restricted Stock Units	Kenneweg John SVP, Sales & Product Marketing	Officer	48 466 Value: $337.3K
Feb 26, 2026 Buy	Stock Option (right to buy)	Kenneweg John SVP, Sales & Product Marketing	Officer	21 187 Value: $131.1K
Feb 26, 2026 Buy	Stock Option (right to buy)	Kenneweg John SVP, Sales & Product Marketing	Officer	39 828 Value: $78.9K
Feb 26, 2026 Buy	Stock Option (right to buy)	Kenneweg John SVP, Sales & Product Marketing	Officer	41 822 Value: $307.4K
Feb 26, 2026 Buy	Stock Option (right to buy)	Kenneweg John SVP, Sales & Product Marketing	Officer	46 049 Value: $406.6K
Feb 26, 2026 Buy	Stock Option (right to buy)	Kenneweg John SVP, Sales & Product Marketing	Officer	13 460 Value: $224.2K
Feb 26, 2026 Buy	Stock Option (right to buy)	Kenneweg John SVP, Sales & Product Marketing	Officer	8 702 Value: $208.8K
Feb 26, 2026 Buy	Stock Option (right to buy)	Kenneweg John SVP, Sales & Product Marketing	Officer	36 875 Value: $119.5K
Feb 26, 2026 Buy	Stock Option (right to buy)	Kenneweg John SVP, Sales & Product Marketing	Officer	61 459 Value: $97.1K
Feb 26, 2026 Buy	Common Stock	Kenneweg John SVP, Sales & Product Marketing	Officer	0 Value: $0
Feb 26, 2026 Buy	Restricted Stock Units	Levine Mark S. Chief Legal And Admin. Officer	Officer	98 242 Value: $683.8K
Feb 26, 2026 Buy	Stock Option (right to buy)	Levine Mark S. Chief Legal And Admin. Officer	Officer	130 468 Value: $871.5K
Feb 26, 2026 Buy	Restricted Stock Units	Mccallion Kevin J. SVP, Products And Production	Officer	48 466 Value: $337.3K
Feb 26, 2026 Buy	Stock Option (right to buy)	Mccallion Kevin J. SVP, Products And Production	Officer	40 011 Value: $79.2K
Feb 26, 2026 Buy	Stock Option (right to buy)	Mccallion Kevin J. SVP, Products And Production	Officer	42 014 Value: $308.8K
Feb 26, 2026 Buy	Common Stock	Mccallion Kevin J. SVP, Products And Production	Officer	0 Value: $0
Feb 26, 2026 Buy	Stock Option (right to buy)	Mccallion Kevin J. SVP, Products And Production	Officer	26 693 Value: $28.0K
Feb 26, 2026 Buy	Stock Option (right to buy)	Mccallion Kevin J. SVP, Products And Production	Officer	21 187 Value: $131.1K
Feb 26, 2026 Buy	Stock Option (right to buy)	Mccallion Kevin J. SVP, Products And Production	Officer	27 917 Value: $465.1K
Feb 26, 2026 Buy	Stock Option (right to buy)	Mccallion Kevin J. SVP, Products And Production	Officer	37 801 Value: $333.8K
Feb 01, 2026 Buy	Common Stock M-Exempt	Brown Christopher D. Director	Director	10 992 Value: $88.0K
Feb 01, 2026 Buy	Common Stock M-Exempt	Brown Christopher D. Director	Director	7 418 Value: $59.4K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT 908 DEVICES INC.

908 Devices Inc., a commercial-stage technology company, provides various purpose-built handheld and desktop mass spectrometry (Mass Spec) devices to interrogate unknown and invisible materials in life sciences research, bioprocessing, industrial biotech, forensics, and adjacent markets. The company's products include MX908, a handheld, battery-powered, and Mass Spec device that is designed for rapid analysis of gas, liquid, and solid materials o...

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