Mark Leonard Singleton
CIK 1914936 · SVP & CFO · last filed 2026-04-14
Mark Leonard Singleton is a SVP & CFO who has filed 28 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing, for BVS, was dated Apr 14, 2026. Across all open-market trades the lifetime net is −$450.4K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.4M 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.
BVS 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
4721 EMPEROR BOULEVARD, SUITE 100
DURHAM, NC 27703
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| BVS | SVP & CFO | 177,333 | $13.49 | $2.39M | -$450.4K | 25 | 2026-04-14 |
Recent Filings
28 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-04-14 | BVS | Mixed | +7,352 | -$51.2K | EDGAR |
| 2026-03-24 | BVS | Mixed | +10,534 | -$69.9K | EDGAR |
| 2026-03-17 | BVS | Mixed | +7,635 | -$50.6K | EDGAR |
| 2026-02-18 | BVS | Mixed | +10,724 | -$78.0K | EDGAR |
| 2025-04-15 | BVS | Sell (S) | −3,875 | -$29.3K | EDGAR |
| 2025-04-11 | BVS | Exer (M) | +13,000 | $0 | EDGAR |
| 2025-03-25 | BVS | Sell (S) | −5,479 | -$53.6K | EDGAR |
| 2025-03-24 | BVS | Notice (144) | −12,000 | -$117.6K | EDGAR |
| 2025-03-21 | BVS | Exer (M) | +18,625 | $0 | EDGAR |
| 2025-02-20 | BVS | Sell (S) | −6,498 | -$66.2K | 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.