Katie Seitz Evans
CIK 1700262 · President, Operations · last filed 2026-05-19
"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
$9.79M
Companies
3
Total Filings
73
Lifetime Open-Market Net
-$14.21M
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 | President, Operations | 496,840 | $19.70 | $9.79M | -$14.13M | 47 | 2026-05-19 |
| Telaria, Inc. (TLRA) Delisted | Chief Operating Officer | 243,198 | — | — | -$63.8K | 11 | 2020-02-19 |
| Telaria, Inc. (TRMR) Delisted | Chief Operating Officer | 43,079 | $5.02 | $216.3K | -$15.9K | 2 | 2017-08-30 |
Recent Filings · Page 2 of 8
73 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 |
|---|---|---|---|---|---|
| 2025-08-15 | MGNI | Notice (144) | −11,391 | -$270.0K | EDGAR |
| 2025-07-02 | MGNI | Mixed | −8,358 | -$512.9K | EDGAR |
| 2025-06-30 | MGNI | Notice (144) | −24,495 | -$571.2K | EDGAR |
| 2025-06-18 | MGNI | Mixed | — | -$297.8K | EDGAR |
| 2025-06-16 | MGNI | Notice (144) | −20,000 | -$370.0K | EDGAR |
| 2025-06-06 | MGNI | Mixed | −15,000 | -$535.4K | EDGAR |
| 2025-06-05 | MGNI | Notice (144) | −35,000 | -$607.7K | EDGAR |
| 2025-05-16 | MGNI | Tax (F) | −10,860 | -$172.5K | EDGAR |
| 2025-02-19 | MGNI | Tax (F) | −23,481 | -$469.6K | EDGAR |
| 2025-02-07 | MGNI | Notice (144) | −12,520 | -$250.4K | 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.