Robert Benjamin Stein
CIK 1597158 · President, Regenerative Med. · last filed 2026-07-17
"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 · Page 2 of 4
33 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 |
|---|---|---|---|---|---|
| 2023-04-25 | MDXG | Notice (144) | −5,987 | -$22.4K | EDGAR |
| 2023-04-13 | MDXG | Sell (S) | −5,996 | -$19.8K | EDGAR |
| 2023-03-15 | MDXG | Grant (A) | +135,065 | $624.0K | EDGAR |
| 2023-03-09 | MDXG | Sell (S) | −12,355 | -$52.4K | EDGAR |
| 2022-09-14 | MDXG | Sell (S) | −27,329 | -$94.1K | EDGAR |
| 2022-08-16 | MDXG | Sell (S) | −8,503 | -$34.3K | EDGAR |
| 2022-08-08 | MDXG | Sell (S) | −19,500 | -$70.6K | EDGAR |
| 2022-06-30 | MDXG | Sell (S) | −14,600 | -$50.7K | EDGAR |
| 2022-04-12 | MDXG | Grant (A) | +178,571 | $825.0K | EDGAR |
| 2022-03-10 | MDXG | Sell (S) | −11,672 | -$56.7K | 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.