Donald C. Templin
CIK 1521739 · See Remarks · last filed 2025-10-15
Donald C. Templin is a corporate insider who has filed 69 SEC Form 4 insider transactions across 4 companies since 2011. The most recent filing, for ARIS, was dated Oct 15, 2025. Across all open-market trades the lifetime net is +$1.7M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $56.6M across reported positions. 28 SEC filings were submitted jointly with Marathon Petroleum Corp.
"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.
ARIS 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
FINDLAY, OH 45840
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ARIS | Director | 0 | $15.85 | $0 | $1000.0K | 6 | 2025-10-15 |
| VOYA | See Remarks | 3,468 | $96.80 | $335.7K | $0 | 4 | 2025-02-12 |
| MPLX | Director | 99,537 | $57.76 | $5.75M | $483.4K | 25 | 2021-11-23 |
| MPC | Executive Vice President | 110,313 | $457.83 | $50.50M | $253.7K | 27 | 2021-02-02 |
Recent Filings
69 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-10-15 | ARIS | Disp (D) | −124,906 | $0 | EDGAR |
| 2025-03-19 | ARIS | Grant (A) | +5,901 | $0 | EDGAR |
| 2025-02-12 | VOYA | Tax (F) | −787 | -$65.0K | EDGAR |
| 2024-07-02 | ARIS | Grant (A) | +9,352 | $0 | EDGAR |
| 2024-02-23 | VOYA | Grant (A) | — | $0 | EDGAR |
| 2024-02-22 | VOYA | Mixed | +4,255 | -$131.9K | EDGAR |
| 2023-07-05 | ARIS | Grant (A) | +13,566 | $0 | EDGAR |
| 2023-02-24 | VOYA | Grant (A) | — | $0 | EDGAR |
| 2022-07-05 | ARIS | Grant (A) | +8,394 | $0 | EDGAR |
| 2021-11-23 | MPLX | Grant (A) | +69 | $0 | 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.