Transaction · 0001836876-26-000011

Kenneweg John

Kenneweg John, SVP, SALES, PM, reported an open-market or private sale at 908 Devices Inc. involving 21399.000000 shares for an estimated $216343.89. Reported holdings after the transaction were 57784.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SSVP, SALES, PM
MASS908 Devices Inc.
Trade date
Sep 16, 2026
Filing date
Sep 17, 2026
View on SEC Insider profile
Disclosed value-$216kShares × reported price
Shares traded21.3k$10.11 per share
Holdings after57.7kDirect
% of reported position traded27.02%This security and ownership context
How reported position traded is calculated

Shares sold ÷ (holdings after + shares sold). Estimated position before: 79,183 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

MASS price since this filing

Daily closing prices, with the filing date and available return windows
MASS · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago -7.2%1w ago -11.7%1d ago -9.2%
Returns since7d +4.9%30d +2.6%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001836876-26-000011
Common Stock
Transaction date
Sep 16, 2026
Filed Sep 17, 2026, 09:27 PM · 1d delay
Shares
21,399 sh
$10.11 per share
Estimated value
-$216k
Computed from shares × price
Holdings after
57,784 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership Large Holdings Reduction Repeat Seller 10b5-1 Detected
Filing-only score

0 points

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • timely_filing+4 points

    reporting_delay_days = 1

    Filing reported within two business days of the transaction.
  • tenb5_1_detected-10 points

    is_10b5_1 = true

    Stored filing content includes detected 10b5-1 language.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

SVP, Sales & Product Marketing

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 12, 2026.

  2. F2

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.00 to $10.32 inclusive. The Reporting Person undertakes to provid…

  3. F3

    The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $10.13 to $10.29 inclusive. The Reporting Person undertakes to provid…

  4. F4

    The shares underlying the option are fully vested and immediately exercisable.

Original filing · 0001836876-26-000011
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