KENNETH R BIEDERMAN
CIK 1208423 · last filed 2025-05-07
"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
$1.07M
Companies
1
Total Filings
70
Lifetime Open-Market Net
-$3.59M
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 | 29,875 | $35.70 | $1.07M | -$3.59M | 70 | 2025-05-07 |
Recent Filings · Page 3 of 7
70 filingsInsider 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 |
|---|---|---|---|---|---|
| 2019-05-10 | ARTNA | Grant (A) | — | $0 | EDGAR |
| 2019-05-03 | ARTNA | Other (J) | +1,000 | $38.5K | EDGAR |
| 2019-03-21 | ARTNA | Mixed | — | -$41.1K | EDGAR |
| 2019-03-19 | ARTNA | Mixed | — | -$97.1K | EDGAR |
| 2019-01-10 | ARTNA | Sell (S) | −1,000 | -$37.0K | EDGAR |
| 2018-05-04 | ARTNA | Mixed | +1,000 | $38.1K | EDGAR |
| 2018-03-20 | ARTNA | Mixed | — | -$145.3K | EDGAR |
| 2017-11-16 | ARTNA | Mixed | — | -$41.2K | EDGAR |
| 2017-05-11 | ARTNA | Sell (S) | −1,000 | -$36.0K | EDGAR |
| 2017-05-08 | ARTNA | Other (J) | +1,000 | $38.3K | EDGAR |
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.
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.