908 Devices SVP exercises options, sells shares
908 Devices Inc. senior vice president Kevin J. McCallion exercised employee stock options and immediately sold the resulting shares in planned trades.
Rhea-AI Filing Summary
908 Devices Inc. senior vice president Kevin J. McCallion exercised employee stock options and immediately sold the resulting shares in planned trades. He exercised options for 24,000 shares of common stock at $1.05 per share, then sold 24,000 shares in open-market transactions at weighted-average prices around $7.04 per share.
The sales were made under a pre-arranged Rule 10b5-1 trading plan adopted on December 9, 2025, indicating the timing was scheduled in advance. After these transactions, McCallion directly holds 44,925 shares of 908 Devices common stock.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Exercise and Sale: 24,000 shares ($144K approx. pre-tax spread)
Exercise and Sale
6 txns
Insider
McCallion Kevin J.
Role
SVP, Products and Production
Sold
24,000 shs ($169K)
Approx. gross sale proceeds
$169K
Approx. exercise cost
$25K
Approx. pre-tax spread
$144K
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (right to buy) | 5,420 | $0.00 | $0.00 |
| Exercise | Common Stock | 5,420 | $1.05 | $6K |
| Sale | Common Stock | 5,420 | $7.03 | $38K |
| Exercise | Stock Option (right to buy) | 18,580 | $0.00 | $0.00 |
| Exercise | Common Stock | 18,580 | $1.05 | $20K |
| Sale | Common Stock | 18,580 | $7.05 | $131K |
Holdings After Transaction:
Stock Option (right to buy) — 2,686 contracts (Direct);
Common Stock — 44,925 shares (Direct)
Footnotes (4)
- F1. This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025.
- F2. 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 $7.25 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 ranges set forth in footnotes (2) and (3).
- F3. 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 $7.09 inclusive.
- F4. The shares underlying the option are fully vested and immediately exercisable.
Key Figures
Options exercised: 24,000 shares at $1.05
Shares sold: 24,000 shares
Sale price range (larger block): $7.00–$7.25
+3 more
6 metrics
Options exercised
24,000 shares at $1.05
Stock options converted to common stock
Shares sold
24,000 shares
Open-market sales across two days
Sale price range (larger block)
$7.00–$7.25
Weighted-average price range for 18,580-share sale
Sale price range (smaller block)
$7.00–$7.09
Weighted-average price range for 5,420-share sale
Direct holdings after transactions
44,925 shares
Common stock held directly post-trade
Rule 10b5-1 plan adoption date
December 9, 2025
Pre-arranged trading plan governing these sales
Key Terms
Rule 10b5-1 trading plan, weighted average price, Stock Option (right to buy), open-market sale, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted"
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."
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)""
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.
derivative exercise/conversion financial
"transaction_action": "derivative exercise/conversion""
FAQ
What did 908 Devices (MASS) executive Kevin McCallion report in this Form 4?
Kevin McCallion reported exercising stock options and selling the resulting 908 Devices shares. He exercised options for 24,000 common shares at $1.05 and sold 24,000 shares in open-market trades at weighted-average prices just above $7.00 per share under a pre-set trading plan.
What stock options did Kevin McCallion exercise at 908 Devices (MASS)?
He exercised stock options covering 24,000 shares of 908 Devices common stock. The options had an exercise price of $1.05 per share and were described as fully vested and immediately exercisable, turning derivative rights into actual common shares before the reported sales occurred.
Were the 908 Devices (MASS) insider sales made under a Rule 10b5-1 plan?
The filing states the transactions were made under a Rule 10b5-1 trading plan adopted on December 9, 2025. Such plans schedule trades in advance, providing a structured way for insiders to diversify holdings without making ad hoc timing decisions based on undisclosed information.
AI-generated analysis. How Rhea-AI works. Not financial advice.
