Kristina Masson
CIK 1950501 · EVP - Business Operations · last filed 2026-08-27
Kristina Masson is an EVP - Business Operations who has filed 16 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing shows the insider sold $61.9K of ACRV on Aug 27, 2026. Across all open-market trades the lifetime net is −$68.8K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.5M across reported positions. 22 SEC filings were submitted jointly with Peter Blume-Jensen.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
ACRV price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
480 ARSENAL WAY, SUITE 100
WATERTOWN, MA 02472
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ACRV | EVP - Business Operations | 2,615,911 | $1.72 | $4.50M | -$68.8K | 16 | 2026-08-27 |
Recent Filings
16 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-08-27 | ACRV | Sell (S) | −28,072 | -$61.9K | EDGAR |
| 2026-08-20 | ACRV | Sell (S) | −3,426 | -$6.9K | EDGAR |
| 2026-05-20 | ACRV | Grant (A) | +505,602 | $0 | EDGAR |
| 2026-05-18 | ACRV | Tax (F) | −3,486 | -$6.7K | EDGAR |
| 2026-02-18 | ACRV | Tax (F) | −3,762 | -$6.1K | EDGAR |
| 2025-11-18 | ACRV | Tax (F) | −120,510 | -$269.9K | EDGAR |
| 2025-05-23 | ACRV | Tax (F) | −39,808 | -$45.8K | EDGAR |
| 2025-02-25 | ACRV | Tax (F) | −39,808 | -$220.5K | EDGAR |
| 2025-02-19 | ACRV | Tax (F) | −75,462 | -$409.0K | EDGAR |
| 2024-11-25 | ACRV | Tax (F) | −39,820 | -$256.4K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.