908 Devices (NASDAQ: MASS) SVP exercises options, sells 2,693 shares under plan
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
908 Devices Inc. senior vice president Kevin J. McCallion exercised stock options for 2,693 shares of common stock at $1.05 per share and sold the same 2,693 shares at a weighted average price of $7.01 per share. The sale was made pursuant to a Rule 10b5-1 trading plan adopted on December 9, 2025, indicating it was pre‑scheduled. Following the transactions, he directly holds 44,925 shares of common stock, and the underlying option grant is now fully exercised.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Net Seller: 2,693 shares ($18,878)
Net Sell
3 txns
Insider
McCallion Kevin J.
Role
SVP, Products and Production
Sold
2,693 shs ($19K)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (right to buy) | 2,693 | $0.00 | -- |
| Exercise | Common Stock | 2,693 | $1.05 | $3K |
| Sale | Common Stock | 2,693 | $7.01 | $19K |
Holdings After Transaction:
Stock Option (right to buy) — 0 shares (Direct);
Common Stock — 47,618 shares (Direct)
Footnotes (1)
- This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.00 to $7.03 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The shares underlying the option are fully vested and immediately exercisable. Due to a scrivener's error on the Form 3, the number of stock options beneficially owned by the Reporting Person pursuant to this grant was understated by 7. Following this transaction, the entire option grant has been exercised.
Key Figures
Options exercised: 2,693 shares
Option exercise price: $1.05 per share
Shares sold: 2,693 shares
+3 more
6 metrics
Options exercised
2,693 shares
Stock options converted to common stock on April 10, 2026
Option exercise price
$1.05 per share
Exercise price for 2,693 stock options
Shares sold
2,693 shares
Common stock sold in open-market transactions
Weighted average sale price
$7.01 per share
Sales between $7.00 and $7.03 on April 10, 2026
Shares owned after transactions
44,925 shares
Direct common stock holdings following the Form 4 transactions
Option expiration date
August 27, 2030
Original expiration date of exercised stock option grant
Key Terms
Rule 10b5-1 trading plan, weighted average price, Stock Option (right to buy), Exercise or conversion of derivative security, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Stock Option (right to buy) financial
"security_title: Stock Option (right to buy)"
Exercise or conversion of derivative security financial
"transaction_code_description: Exercise or conversion of derivative security"
open-market sale financial
"transaction_action: open-market sale"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
FAQ
What did MASS executive Kevin J. McCallion report in this Form 4?
Kevin J. McCallion reported exercising stock options for 2,693 shares of 908 Devices common stock at $1.05 per share and selling 2,693 shares at a weighted average of $7.01. After these transactions, he directly holds 44,925 shares.
Was the MASS insider sale by Kevin J. McCallion pre-planned under Rule 10b5-1?
Yes. The filing states the sale was executed under a Rule 10b5-1 trading plan adopted on December 9, 2025. Such plans allow insiders to schedule trades in advance, reducing the significance of trade timing as a signal.
What stock options did Kevin J. McCallion exercise in this MASS Form 4?
He exercised stock options covering 2,693 shares of 908 Devices common stock at an exercise price of $1.05 per share. A footnote notes the option was fully vested and immediately exercisable and that, after this transaction, the entire option grant has been exercised.
What does the weighted average price mean in this MASS insider sale?
The weighted average price of $7.01 per share reflects multiple trades between $7.00 and $7.03. The filing notes the insider will provide detailed share counts at each price upon request to the company, shareholders, or regulators.