Isaac T. Kohlberg
CIK 1776505 · last filed 2026-09-16
Isaac T. Kohlberg is a corporate insider who has filed 16 SEC Form 4 insider transactions across 1 company since 2019. The most recent filing shows the insider sold $109.2K of ACTG on Sep 16, 2026. Across all open-market trades the lifetime net is −$389.5K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $226.5K across reported positions. 15 SEC filings were submitted jointly with ACACIA RESEARCH 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.
ACTG 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
SUITE 2602
NEW YORK, NY 10017
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ACTG | Director | 54,310 | $4.17 | $226.5K | -$389.5K | 12 | 2026-09-16 |
Recent Filings
16 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-16 | ACTG | Sell (S) | −24,000 | -$109.2K | EDGAR |
| 2026-09-15 | ACTG | Notice (144) | −24,000 | -$110.0K | EDGAR |
| 2026-08-14 | ACTG | Sell (S) | −32,188 | -$150.3K | EDGAR |
| 2026-08-12 | ACTG | Notice (144) | −32,188 | -$150.2K | EDGAR |
| 2026-06-25 | ACTG | Grant (A) | +25,052 | $0 | EDGAR |
| 2025-06-13 | ACTG | Sell (S) | −16,000 | -$61.4K | EDGAR |
| 2025-06-13 | ACTG | Notice (144) | −16,000 | -$61.4K | EDGAR |
| 2025-06-03 | ACTG | Grant (A) | +32,172 | $0 | EDGAR |
| 2024-11-26 | ACTG | Sell (S) | −15,000 | -$68.6K | EDGAR |
| 2024-11-25 | ACTG | Notice (144) | −15,000 | -$68.6K | 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.