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Christopher D. Brown

CIK 1836988 · Chief Product Officer · last filed 2026-08-07

Christopher D. Brown is a Chief Product Officer who has filed 41 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing, for MASS, was dated Aug 10, 2026. Across all open-market trades the lifetime net is −$7.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $8.2M across reported positions.

"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

41 filings
Insider 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
2026-08-10 MASS Notice (144) −100,000 -$888.0K EDGAR
2026-08-07 MASS Sell (S) −20,000 -$169.8K EDGAR
2026-07-07 MASS Sell (S) −2,200 -$19.8K EDGAR
2026-07-02 MASS Sell (S) −20,000 -$176.8K EDGAR
2026-06-25 MASS Sell (S) −9,900 -$89.5K EDGAR
2026-06-05 MASS Sell (S) −100 -$900 EDGAR
2026-06-04 MASS Sell (S) −20,000 -$174.6K EDGAR
2026-06-03 MASS Notice (144) −70,000 -$619.5K EDGAR
2026-05-29 MASS Sell (S) −30,000 -$270.0K EDGAR
2026-05-07 MASS Sell (S) −20,000 -$144.6K EDGAR
Showing 1–10 of 41
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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.