Matthew S Newcomb
CIK 2061268 · Chief Financial Officer · last filed 2026-08-10
Matthew S Newcomb is a Chief Financial Officer who has filed 12 SEC Form 4 insider transactions across 1 company since 2025. The most recent filing, for CHYM, was dated Sep 9, 2026. Across all open-market trades the lifetime net is −$2.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $90.1M 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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
CHYM 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
101 CALIFORNIA STREET, SUITE 500
SAN FRANCISCO, CA 94111
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| CHYM | Chief Financial Officer | 2,739,242 | $32.90 | $90.12M | -$2.24M | 8 | 2026-08-10 |
Recent Filings
12 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-09 | CHYM | Notice (144) | −42,420 | -$1.37M | EDGAR |
| 2026-08-24 | CHYM | Notice (144) | −25,000 | -$819.5K | EDGAR |
| 2026-08-10 | CHYM | Sell (S) | −65,000 | -$1.96M | EDGAR |
| 2026-08-06 | CHYM | Notice (144) | −65,000 | -$1.68M | EDGAR |
| 2026-05-18 | CHYM | Mixed | −18,389 | -$328.8K | EDGAR |
| 2026-03-16 | CHYM | Grant (A) | +140,713 | $0 | EDGAR |
| 2026-02-19 | CHYM | Mixed | −23,993 | -$472.4K | EDGAR |
| 2026-01-13 | CHYM | Sell (S) | −10,000 | -$280.1K | EDGAR |
| 2026-01-09 | CHYM | Notice (144) | −10,000 | -$277.0K | EDGAR |
| 2025-11-21 | CHYM | Mixed | −13,888 | -$256.0K | 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.