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Robert Benjamin Stein

CIK 1597158 · President, Regenerative Med. · last filed 2026-07-17

Robert Benjamin Stein is a President, Regenerative Med. who has filed 33 SEC Form 4 insider transactions across 4 companies since 2014. The most recent filing, for PYPD, was dated Jul 17, 2026. Across all open-market trades the lifetime net is −$907.1K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.4M 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

$1.41M

Companies

4

Total Filings

33

Lifetime Open-Market Net

-$907.1K

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
PYPD Director — $3.98 — $0 1 2026-07-17
Protagenic Therapeutics, Inc.\new (PTIXW) Delisted Director — $0.01 — $0 1 2024-03-29
MDXG President, Regenerative Med. 328,168 $4.26 $1.40M -$907.1K 16 2023-05-17
AGEN President R&D 1,669 $6.13 $10.2K $0 7 2017-04-04

Recent Filings

33 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
2026-07-17 PYPD Grant (A) — $0 EDGAR
2024-03-29 Protagenic Therapeutics, Inc.\new (PTIXW) Delisted Grant (A) — $0 EDGAR
2023-05-17 MDXG Sell (S) −13,972 -$83.8K EDGAR
2023-05-16 MDXG Notice (144) −10,365 -$61.6K EDGAR
2023-05-15 MDXG Notice (144) −3,607 -$22.2K EDGAR
2023-05-12 MDXG Sell (S) −5,869 -$34.8K EDGAR
2023-05-10 MDXG Notice (144) −5,869 -$34.8K EDGAR
2023-05-09 MDXG Sell (S) −51,756 -$276.5K EDGAR
2023-05-04 MDXG Notice (144) −51,756 -$276.5K EDGAR
2023-04-27 MDXG Sell (S) −5,987 -$22.4K EDGAR
Showing 1–10 of 33
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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.