Insider transactions

Dian C Taylor

CIK 1208428 · C.E.O. President · last filed 2026-09-17

Dian C Taylor is a C.E.O. President who has filed 84 SEC Form 4 insider transactions across 1 company since 2007. The most recent filing shows the insider sold $140.7K of ARTNA on Sep 17, 2026. Across all open-market trades the lifetime net is −$4.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.0M 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
$2.00M
Companies
1
Total Filings
84
Lifetime Open-Market Net
-$3.99M

Charts

Trading activity, where the exposure sits, and each trade against the stock price.

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
ARTNA Director 59,523 $33.54 $2.00M -$3.99M 78 2026-09-17

Recent Filings

84 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
2026-09-17 ARTNA Sell (S) −4,000 -$140.7K EDGAR
2026-09-14 ARTNA Notice (144) −14,000 -$496.9K EDGAR
2026-09-11 ARTNA Sell (S) −1,876 -$67.7K EDGAR
2026-09-04 ARTNA Sell (S) −3,124 -$112.7K EDGAR
2026-09-01 ARTNA Sell (S) −2,000 -$71.0K EDGAR
2026-08-31 ARTNA Sell (S) −2,000 -$71.0K EDGAR
2026-08-27 ARTNA Sell (S) −2,000 -$71.4K EDGAR
2026-08-21 ARTNA Sell (S) −2,000 -$70.6K EDGAR
2026-08-18 ARTNA Sell (S) −4,000 -$140.0K EDGAR
2026-08-14 ARTNA Notice (144) −15,000 -$533.5K EDGAR
Showing 1–10 of 84
Page 1 of 9
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.