Christopher D. Brown
CIK 1836988 · Chief Product Officer · last filed 2026-08-07
"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.
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Disclosed Exposure
$8.24M
Companies
1
Total Filings
41
Lifetime Open-Market Net
-$7.08M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MASS | Director | 823,359 | $10.01 | $8.24M | -$7.08M | 36 | 2026-08-07 |
Recent Filings · Page 3 of 5
41 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2023-12-19 | MASS | Notice (144) | −20,000 | -$153.0K | EDGAR |
| 2023-06-09 | MASS | Sell (S) | −4,470 | -$44.8K | EDGAR |
| 2023-05-25 | MASS | Sell (S) | −10,000 | -$100.2K | EDGAR |
| 2023-05-23 | MASS | Notice (144) | −20,000 | -$171.8K | EDGAR |
| 2023-03-16 | MASS | Grant (A) | — | $0 | EDGAR |
| 2023-02-03 | MASS | Mixed | −6,537 | -$114.6K | EDGAR |
| 2022-09-14 | MASS | Sell (S) | −20,000 | -$391.6K | EDGAR |
| 2022-07-08 | MASS | Sell (S) | −10,000 | -$212.8K | EDGAR |
| 2022-07-01 | MASS | Sell (S) | −20,171 | -$407.5K | EDGAR |
| 2022-04-14 | MASS | Sell (S) | −9,829 | -$197.2K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
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.
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.