Mark W Stiers
CIK 1594975 · Pres & COO-DTE Vantage & Trad. · last filed 2025-02-07
Mark W Stiers is a Pres & COO-DTE Vantage & Trad. who has filed 32 SEC Form 4 insider transactions across 3 companies since 2014. The most recent filing, for DTW, was dated Feb 7, 2025. Across all open-market trades the lifetime net is −$5.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.1M across reported positions. 33 SEC filings were submitted jointly with DTE ENERGY CO.
"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.
DTY 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
DETROIT, MI 48226
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| DTW | Pres & COO-DTE Vantage & Trad. | 61,424 | $17.86 | $1.10M | -$1.16M | 9 | 2025-02-07 |
| DTE ENERGY CO (DTY) Delisted | Pres. & COO P&I, Pres. Trading | 27,808 | $24.99 | $694.9K | -$4.33M | 17 | 2021-02-02 |
| DTE ENERGY CO (DTZ) Delisted | President and COO - DTE Gas | 27,656 | — | — | $0 | 5 | 2016-02-17 |
Recent Filings
32 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-02-07 | DTW | Mixed | +11,397 | -$447.0K | EDGAR |
| 2025-02-04 | DTW | Tax (F) | −840 | -$100.7K | EDGAR |
| 2024-05-17 | DTW | Sell (S) | −10,000 | -$1.16M | EDGAR |
| 2024-05-15 | DTE | Notice (144) | −10,000 | -$1.16M | EDGAR |
| 2024-02-02 | DTW | Mixed | +12,047 | -$565.1K | EDGAR |
| 2024-01-30 | DTW | Tax (F) | −899 | -$93.1K | EDGAR |
| 2023-02-03 | DTW | Mixed | +10,812 | -$563.8K | EDGAR |
| 2023-01-30 | DTW | Tax (F) | −820 | -$93.1K | EDGAR |
| 2022-02-04 | DTW | Mixed | +9,463 | -$472.9K | EDGAR |
| 2022-01-31 | DTW | Tax (F) | −811 | -$97.5K | 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.