Mark Zagorski
CIK 1709574 · Chief Executive Officer · last filed 2026-07-01
"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
$7.82M
Companies
6
Total Filings
56
Lifetime Open-Market Net
$746.5K
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 |
|---|---|---|---|---|---|---|---|
| DV | Chief Executive Officer | 587,817 | $13.22 | $7.77M | $605.0K | 42 | 2026-07-01 |
| TEAD | Director | 72,500 | $0.66 | $47.7K | $0 | 1 | 2026-05-18 |
| Teads Holding Co. (OB) Delisted | Director | 52,500 | $2.74 | $143.8K | $0 | 2 | 2025-06-09 |
| RUBI | President & COO | 6 | $2.23 | $13 | $0 | 1 | 2020-04-03 |
| Telaria, Inc. (TLRA) Delisted | Chief Executive Officer | 156,830 | — | — | $40.2K | 7 | 2020-02-19 |
| Telaria, Inc. (TRMR) Delisted | Chief Executive Officer | 41,865 | $5.02 | $210.2K | $101.3K | 2 | 2017-08-15 |
Recent Filings · Page 3 of 6
56 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 |
|---|---|---|---|---|---|
| 2024-04-26 | Teads Holding Co. (OB) Delisted | Grant (A) | +30,000 | $0 | EDGAR |
| 2024-04-02 | DV | Mixed | +4,656 | -$202.6K | EDGAR |
| 2024-03-19 | DV | Mixed | +8,245 | -$199.5K | EDGAR |
| 2024-01-03 | DV | Mixed | +4,655 | -$211.9K | EDGAR |
| 2023-12-21 | DV | Mixed | +389 | $11.0K | EDGAR |
| 2023-12-19 | DV | Mixed | +2,892 | -$127.2K | EDGAR |
| 2023-10-03 | DV | Mixed | +4,656 | -$161.0K | EDGAR |
| 2023-09-21 | DV | Buy (P) | +1,765 | $50.1K | EDGAR |
| 2023-09-19 | DV | Mixed | +2,892 | -$103.5K | EDGAR |
| 2023-07-05 | DV | Mixed | +4,439 | -$232.7K | 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.