Jonathan P. Foster
CIK 1545414 · Chief Financial Officer · last filed 2026-08-05
Jonathan P. Foster is a Chief Financial Officer who has filed 37 SEC Form 4 insider transactions across 5 companies since 2014. The most recent filing, for MBRX, was dated Aug 5, 2026. Across all open-market trades the lifetime net is +$159.6K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $497.6K 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.
$497.6K
5
37
$159.6K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MBRX | Chief Financial Officer | 305,673 | $0.45 | $136.0K | $128.6K | 23 | 2026-08-05 |
| EMPD | Director | — | $2.65 | — | $0 | 1 | 2026-02-20 |
| Empery Digital Inc. (VLCN) Delisted | Director | 20,000 | $10.57 | $211.4K | $0 | 4 | 2025-07-21 |
| Soliton, Inc. (SOLY) Delisted | Director | — | $22.58 | — | $0 | 3 | 2021-12-17 |
| INFU | Chief Financial Officer | 29,019 | $12.46 | $361.6K | $30.9K | 6 | 2015-08-18 |
Recent Filings
37 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-08-05 | MBRX | Buy (P) | +293,333 | $0 | EDGAR |
| 2026-06-24 | MBRX | Mixed | +211 | -$217 | EDGAR |
| 2026-02-20 | EMPD | Other (J) | — | $0 | EDGAR |
| 2025-11-14 | MBRX | Grant (A) | — | $0 | EDGAR |
| 2025-11-06 | MBRX | Exer (M) | +15,602 | -$2.5K | EDGAR |
| 2025-07-21 | Empery Digital Inc. (VLCN) Delisted | Grant (A) | +20,000 | $200.0K | EDGAR |
| 2025-06-23 | MBRX | Mixed | +275,594 | $99.5K | EDGAR |
| 2025-06-18 | MBRX | Mixed | +630 | -$139 | EDGAR |
| 2024-11-06 | MBRX | Grant (A) | — | $0 | EDGAR |
| 2024-06-25 | MBRX | Mixed | +3,276 | -$3.9K | 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.