Douglas S Knopper
CIK 1350876 · last filed 2026-06-17
"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
$2.48M
Companies
4
Total Filings
20
Lifetime Open-Market Net
-$1.58M
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 |
|---|---|---|---|---|---|---|---|
| MGNI | Director | 125,810 | $19.70 | $2.48M | -$1.58M | 10 | 2026-06-17 |
| RUBI | Director | 2 | $2.16 | $4 | $0 | 1 | 2020-04-03 |
| Telaria, Inc. (TLRA) Delisted | Director | 84,757 | — | — | $0 | 3 | 2019-10-17 |
| MEDIALINK WORLDWIDE INC (MDLK) Delisted | Director | — | — | — | $0 | 3 | 2009-01-06 |
Recent Filings · Page 2 of 2
20 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 |
|---|---|---|---|---|---|
| 2021-04-07 | MGNI | Sell (S) | −10,000 | -$400.8K | EDGAR |
| 2020-07-16 | MGNI | Grant (A) | +18,436 | $0 | EDGAR |
| 2020-04-03 | RUBI | Grant (A) | +102,884 | $0 | EDGAR |
| 2020-04-03 | — | Disp (D) | −84,757 | $0 | |
| 2019-10-17 | Telaria, Inc. (TLRA) Delisted | Exer (M) | +68,729 | $0 | EDGAR |
| 2019-06-12 | Telaria, Inc. (TLRA) Delisted | Mixed | +16,028 | $0 | EDGAR |
| 2018-10-19 | Telaria, Inc. (TLRA) Delisted | Grant (A) | — | $0 | EDGAR |
| 2009-01-06 | MEDIALINK WORLDWIDE INC (MDLK) Delisted | Grant (A) | — | $0 | EDGAR |
| 2008-01-03 | MEDIALINK WORLDWIDE INC (MDLK) Delisted | Grant (A) | — | $0 | EDGAR |
| 2007-01-04 | MEDIALINK WORLDWIDE INC (MDLK) Delisted | Grant (A) | — | $0 | EDGAR |
Showing 11–20 of 20
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Page 2 of 2
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.