Nina Richardson
CIK 1610535 · Chief Operating Officer · last filed 2026-08-06
"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
$5.72M
Companies
8
Total Filings
102
Lifetime Open-Market Net
-$3.68M
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 |
|---|---|---|---|---|---|---|---|
| COHU | Director | 39,093 | $58.68 | $2.29M | -$373.1K | 15 | 2026-08-06 |
| REZI | Director | 63,354 | $21.26 | $1.35M | -$410.9K | 20 | 2026-06-05 |
| SLAB | Director | 9,505 | $218.52 | $2.08M | -$984.7K | 18 | 2026-04-24 |
| Eargo, Inc. (EAR) Delisted | Director | 0 | $2.57 | $0 | -$311.6K | 6 | 2022-08-25 |
| Zayo Group Holdings, Inc. (ZAYO) Delisted | Director | 11,845 | — | — | -$247.2K | 26 | 2018-10-11 |
| CALLIDUS SOFTWARE INC (CALD) Delisted | Director | 12,296 | — | — | $0 | 2 | 2017-06-16 |
| SGI | Director | 0 | $66.73 | $0 | $0 | 3 | 2016-11-02 |
| GPRO | Chief Operating Officer | 0 | $0.64 | $0 | -$1.36M | 3 | 2015-01-30 |
Recent Filings · Page 8 of 11
102 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 |
|---|---|---|---|---|---|
| 2018-04-03 | Zayo Group Holdings, Inc. (ZAYO) Delisted | Mixed | +622 | -$21.2K | EDGAR |
| 2018-01-09 | Zayo Group Holdings, Inc. (ZAYO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2018-01-03 | Zayo Group Holdings, Inc. (ZAYO) Delisted | Mixed | +655 | -$24.1K | EDGAR |
| 2017-10-06 | Zayo Group Holdings, Inc. (ZAYO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2017-10-03 | Zayo Group Holdings, Inc. (ZAYO) Delisted | Mixed | +720 | -$24.9K | EDGAR |
| 2017-07-10 | Zayo Group Holdings, Inc. (ZAYO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2017-07-05 | Zayo Group Holdings, Inc. (ZAYO) Delisted | Mixed | +747 | -$23.0K | EDGAR |
| 2017-06-16 | CALLIDUS SOFTWARE INC (CALD) Delisted | Grant (A) | +2,837 | $63.3K | EDGAR |
| 2017-04-24 | SLAB | Sell (S) | +1,669 | $120.8K | EDGAR |
| 2017-04-21 | SLAB | Grant (A) | +2,702 | $0 | 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.