GEOFFREY G RIBAR
CIK 1247434 · Sr. VP, CFO · last filed 2026-06-05
"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.
Loading insider history…
Disclosed Exposure
$55.83M
Companies
7
Total Filings
102
Lifetime Open-Market Net
-$19.55M
Filer Profile
Related Filers
ACACIA RESEARCH CORP — 5 joint filings, latest 2026-08-11
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses.
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 |
|---|---|---|---|---|---|---|---|
| QS | Director | 60,285 | $5.10 | $307.5K | $0 | 2 | 2026-06-05 |
| MRAM | Director | 97,915 | $17.17 | $1.68M | -$1.32M | 13 | 2026-05-22 |
| MTSI | Director | 12,563 | $279.11 | $3.51M | -$2.94M | 19 | 2026-05-13 |
| ACTG | Director | 85,827 | $4.36 | $374.2K | $0 | 3 | 2025-06-03 |
| AQUANTIA CORP (AQ) Delisted | Director | 13,122 | — | — | $0 | 3 | 2019-06-21 |
| CDNS | Sr. VP, CFO | 169,413 | $294.90 | $49.96M | -$15.29M | 49 | 2017-08-30 |
| SIRF TECHNOLOGY HOLDINGS INC (SIRF) Delisted | Sr. Vice President & CFO | 26,801 | — | — | $0 | 3 | 2008-01-22 |
Recent Filings · Page 4 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 |
|---|---|---|---|---|---|
| 2023-05-24 | MRAM | Grant (A) | +16,578 | $0 | EDGAR |
| 2023-03-07 | MTSI | Grant (A) | +2,244 | $0 | EDGAR |
| 2022-05-26 | MRAM | Grant (A) | +23,408 | $0 | EDGAR |
| 2022-03-08 | MTSI | Grant (A) | +2,768 | $0 | EDGAR |
| 2021-12-30 | MTSI | Grant (A) | +2,093 | $0 | EDGAR |
| 2021-11-18 | MRAM | Grant (A) | +27,992 | $0 | EDGAR |
| 2021-05-05 | MTSI | Sell (S) | −5,414 | -$309.0K | EDGAR |
| 2021-03-11 | MTSI | Grant (A) | +2,903 | $0 | EDGAR |
| 2020-08-06 | MTSI | Sell (S) | −5,000 | -$210.2K | EDGAR |
| 2020-05-20 | MRAM | Grant (A) | +20,131 | $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.