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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 $48.5M 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

$48.48M

Companies

4

Total Filings

69

Lifetime Open-Market Net

$1.74M

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
ARIS Director 0 $18.87 $0 $1000.0K 6 2025-10-15
VOYA See Remarks 3,468 $101.05 $350.4K $0 4 2025-02-12
MPLX Director 99,537 $59.09 $5.88M $483.4K 25 2021-11-23
MPC Executive Vice President 110,313 $383.00 $42.25M $253.7K 27 2021-02-02

Recent Filings

69 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
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
Showing 1–10 of 69
Page 1 of 7
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.