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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 $552.7K 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.

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Disclosed Exposure

$552.7K

Companies

5

Total Filings

37

Lifetime Open-Market Net

$159.6K

Filer Profile

Reported Address
5300 MEMORIAL DRIVE
SUITE 950
HOUSTON, TX 77007
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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 $0.60 $183.9K $128.6K 23 2026-08-05
EMPD Director — $2.89 — $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 $12.71 $368.8K $30.9K 6 2015-08-18

Recent Filings

37 filings
Insider 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
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
Showing 1–10 of 37
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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.