Jonathan P. Foster
CIK 1545414 · Chief Financial Officer · last filed 2026-08-05
"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.
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Disclosed Exposure
$497.6K
Companies
5
Total Filings
37
Lifetime Open-Market Net
$159.6K
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 3 of 4
37 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2022-06-21 | MBRX | Mixed | +9,456 | -$4.0K | EDGAR |
| 2021-12-17 | Soliton, Inc. (SOLY) Delisted | Disp (D) | — | $0 | EDGAR |
| 2021-06-21 | MBRX | Grant (A) | — | $0 | EDGAR |
| 2020-07-07 | MBRX | Grant (A) | — | $0 | EDGAR |
| 2020-06-23 | Soliton, Inc. (SOLY) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-07-15 | MBRX | Grant (A) | — | $0 | EDGAR |
| 2019-07-01 | Soliton, Inc. (SOLY) Delisted | Grant (A) | — | $0 | EDGAR |
| 2018-06-08 | MBRX | Grant (A) | — | $0 | EDGAR |
| 2017-10-05 | MBRX | Grant (A) | — | $0 | EDGAR |
| 2017-04-26 | MBRX | Buy (P) | +10,000 | $8.6K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
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.
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.