Mark Elliott Boulding
CIK 1578852 · EXEC. VP AND CLO · last filed 2026-05-19
Mark Elliott Boulding is an EXEC. VP AND CLO who has filed 53 SEC Form 4 insider transactions across 1 company since 2014. The most recent filing, for PTCT, was dated May 19, 2026. Across all open-market trades the lifetime net is −$38.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $8.1M 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.
$8.12M
1
53
-$38.74M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| PTCT | EXEC. VP AND CLO | 108,024 | $75.14 | $8.12M | -$38.74M | 53 | 2026-05-19 |
Recent Filings
53 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-19 | PTCT | Mixed | — | -$130.7K | EDGAR |
| 2026-05-12 | PTCT | Mixed | — | -$114.8K | EDGAR |
| 2026-04-08 | PTCT | Mixed | — | -$68.0K | EDGAR |
| 2026-02-23 | PTCT | Sell (S) | −3,019 | -$209.8K | EDGAR |
| 2026-02-19 | PTCT | Mixed | −3,081 | -$336.3K | EDGAR |
| 2026-01-12 | PTCT | Sell (S) | −6,347 | -$489.1K | EDGAR |
| 2026-01-08 | PTCT | Mixed | −3,242 | -$383.0K | EDGAR |
| 2026-01-06 | PTCT | Mixed | +17,000 | -$81.9K | EDGAR |
| 2025-11-19 | PTCT | Mixed | — | -$141.4K | EDGAR |
| 2025-10-09 | PTCT | Mixed | — | -$85.5K | EDGAR |