J MATTHEW SINGLETON
CIK 1243514 · last filed 2026-01-05
J MATTHEW SINGLETON is a corporate insider who has filed 39 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing, for VKTX, was dated Jan 5, 2026. Across all open-market trades the lifetime net is −$6.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $401.5K 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.
$401.5K
3
39
-$6.82M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| VKTX | Director | 12,650 | $31.74 | $401.5K | -$4.58M | 12 | 2026-01-05 |
| Viking Therapeutics, Inc. (VKTXW) Delisted | Director | 9,500 | $4.60 | $43.7K | $93.3K | 6 | 2021-01-06 |
| CUBIST PHARMACEUTICALS INC (CBST) Delisted | Director | 4,972 | — | — | -$2.34M | 16 | 2013-06-14 |
Recent Filings
39 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-01-05 | VKTX | Grant (A) | +3,150 | $0 | EDGAR |
| 2025-01-06 | VKTX | Grant (A) | — | $0 | EDGAR |
| 2024-10-25 | VKTX | Mixed | — | -$1.20M | EDGAR |
| 2024-10-25 | VKTX | Notice (144) | −16,000 | -$1.27M | EDGAR |
| 2024-09-20 | VKTX | Mixed | — | -$703.6K | EDGAR |
| 2024-09-20 | VKTX | Notice (144) | −10,300 | -$715.9K | EDGAR |
| 2024-08-22 | VKTX | Mixed | — | -$390.6K | EDGAR |
| 2024-08-21 | VKTX | Notice (144) | −5,700 | -$397.4K | EDGAR |
| 2024-08-19 | VKTX | Mixed | — | -$942.2K | EDGAR |
| 2024-08-19 | VKTX | Notice (144) | −16,000 | -$995.4K | 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.