Christopher R. Fenimore
CIK 1697422 · EVP Finance CFO · last filed 2026-08-20
Christopher R. Fenimore is an EVP Finance CFO who has filed 42 SEC Form 4 insider transactions across 1 company since 2017. The most recent filing, for REGN, was dated Aug 20, 2026. Across all open-market trades the lifetime net is −$30.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $20.0M across reported positions. 43 SEC filings were submitted jointly with REGENERON PHARMACEUTICALS, INC.
"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.
REGN 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
777 OLD SAW MILL RIVER ROAD
TARRYTOWN, NY 10591
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| REGN | EVP Finance CFO | 24,608 | $813.27 | $20.01M | -$30.33M | 39 | 2026-08-20 |
Recent Filings
42 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-08-20 | REGN | Mixed | +1,684 | -$1.34M | EDGAR |
| 2025-12-09 | REGN | Mixed | +2,035 | -$707.2K | EDGAR |
| 2024-12-18 | REGN | Tax (F) | −491 | -$358.8K | EDGAR |
| 2024-12-10 | REGN | Mixed | +1,451 | -$897.2K | EDGAR |
| 2024-08-29 | REGN | Sell (S) | −5,680 | -$6.85M | EDGAR |
| 2024-08-28 | REGN | Notice (144) | −5,680 | -$6.85M | EDGAR |
| 2024-02-12 | REGN | Sell (S) | −4,919 | -$4.69M | EDGAR |
| 2024-02-09 | REGN | Notice (144) | −4,919 | -$4.69M | EDGAR |
| 2024-01-25 | REGN | Mixed | +2,431 | -$2.40M | EDGAR |
| 2024-01-04 | REGN | Mixed | +2,488 | -$2.08M | 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.