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 6 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 |
|---|---|---|---|---|---|
| 2021-11-17 | MGNI | Tax (F) | −3,069 | -$69.1K | EDGAR |
| 2021-09-15 | MGNI | Sell (S) | −64,190 | -$1.88M | EDGAR |
| 2021-08-18 | MGNI | Sell (S) | −3,329 | -$89.3K | EDGAR |
| 2021-05-28 | MGNI | Exer (M) | +42,803 | $204.5K | EDGAR |
| 2021-05-19 | MGNI | Sell (S) | −12,438 | -$323.1K | EDGAR |
| 2021-04-07 | MGNI | Sell (S) | −27,896 | -$1.12M | EDGAR |
| 2021-04-05 | MGNI | Mixed | −71,781 | -$4.19M | EDGAR |
| 2021-02-18 | MGNI | Sell (S) | −30,138 | -$1.69M | EDGAR |
| 2021-01-27 | MGNI | Exer (M) | +1,442 | $5.7K | EDGAR |
| 2020-04-03 | — | Disp (D) | −215,407 | $0 |
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.