Alexander Karsner
CIK 1446059 · last filed 2026-03-13
"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.
Loading insider history…
Disclosed Exposure
$13.89M
Companies
3
Total Filings
34
Lifetime Open-Market Net
-$4.09M
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.
Recent Filings · Page 3 of 4
34 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 |
|---|---|---|---|---|---|
| 2014-03-20 | AMAT | Sell (S) | −45,706 | -$889.9K | EDGAR |
| 2014-03-06 | AMAT | Grant (A) | +10,615 | $0 | EDGAR |
| 2014-01-06 | CDXS | Grant (A) | +35,416 | $0 | EDGAR |
| 2013-06-26 | AMAT | Sell (S) | −37,550 | -$572.6K | EDGAR |
| 2013-03-07 | AMAT | Grant (A) | +14,556 | $0 | EDGAR |
| 2013-01-28 | CDXS | Grant (A) | +43,103 | $0 | EDGAR |
| 2012-06-08 | CDXS | Grant (A) | — | $0 | EDGAR |
| 2012-03-08 | AMAT | Grant (A) | +16,659 | $0 | EDGAR |
| 2011-07-22 | CDXS | Grant (A) | — | $0 | EDGAR |
| 2011-03-10 | AMAT | Grant (A) | +12,666 | $0 | 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.