Brian Jay Stark
CIK 1010208 · last filed 2026-05-27
"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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
MFLX price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
ST. FRANCIS, WI 53235
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MCS | Director | 48,206 | $27.88 | $1.34M | $0 | 38 | 2026-05-27 |
| SteadyMed Ltd. (STDY) Delisted | Director | 2,937,938 | — | — | $7.07M | 8 | 2017-12-28 |
| Fibrocell Science, Inc. (ILE) Delisted | 10%+ Owner | 6,652,239 | — | — | -$59.0K | 5 | 2009-05-05 |
| NORTH AMERICAN SCIENTIFIC INC (NASM) Delisted | 10%+ Owner | 2,653,084 | — | — | -$23.0K | 2 | 2009-03-20 |
| PLANETOUT INC (LGBT) Delisted | 10%+ Owner | 473,142 | $26.61 | $12.59M | -$57.9K | 2 | 2009-03-13 |
| UROPLASTY INC (UPI) Delisted | 10%+ Owner | 1,373,814 | — | — | -$70.7K | 1 | 2009-02-19 |
| MFLX | 10%+ Owner | 2,250,471 | $16.15 | $36.35M | -$65.99M | 14 | 2008-06-30 |
Recent Filings · Page 6 of 10
92 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2009-06-30 | — | Sell (S) | −2,100,000 | -$24.8K | |
| 2009-06-25 | — | Sell (S) | −841,300 | -$16.8K | |
| 2009-06-10 | — | Sell (S) | −2,100,000 | -$26.5K | |
| 2009-05-28 | — | Sell (S) | −623,000 | -$8.1K | |
| 2009-05-21 | — | Sell (S) | −1,097,910 | -$13.9K | |
| 2009-05-15 | — | Sell (S) | −608,000 | -$10.1K | |
| 2009-05-08 | — | Sell (S) | −438,000 | -$7.3K | |
| 2009-05-05 | Fibrocell Science, Inc. (ILE) Delisted | Sell (S) | −3,200 | -$448 | EDGAR |
| 2009-05-04 | — | Sell (S) | −257,000 | -$5.1K | |
| 2009-04-21 | Fibrocell Science, Inc. (ILE) Delisted | Sell (S) | −140,600 | -$19.2K | 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.