Yvonne Wassenaar
CIK 1707744 · last filed 2026-10-06
Yvonne Wassenaar is a corporate insider who has filed 103 SEC Form 4 insider transactions across 7 companies since 2017. The most recent filing shows the insider sold $85.8K of RBRK on Oct 6, 2026. Across all open-market trades the lifetime net is −$3.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $5.2M across reported positions. 5 SEC filings were submitted jointly with Braze, Inc.
"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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
RBRK price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
60 ACORN PARK DRIVE
CAMBRIDGE, MA 02140
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| RBRK | Director | 2,988 | $133.40 | $398.6K | -$1.68M | 17 | 2026-10-06 |
| ANET | Director | 10,322 | $177.24 | $1.83M | -$1.05M | 34 | 2026-08-24 |
| BRZE | Director | 18,513 | $45.84 | $848.6K | $0 | 4 | 2026-07-02 |
| FROG | Director | 18,031 | $99.61 | $1.80M | -$544.9K | 14 | 2026-06-11 |
| FORR | Director | 26,423 | $12.33 | $325.8K | -$60.0K | 9 | 2024-06-04 |
| Anaplan, Inc. (PLAN) Delisted | Director | 10,017 | $63.73 | $638.4K | $0 | 5 | 2022-06-17 |
| MULESOFT, INC (MULE) Delisted | Director | 0 | — | — | $0 | 2 | 2018-05-03 |
Recent Filings
103 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-10-06 | RBRK | Sell (S) | −721 | -$85.8K | EDGAR |
| 2026-09-03 | RBRK | Notice (144) | −2,163 | -$188.6K | EDGAR |
| 2026-09-03 | RBRK | Mixed | −208 | -$64.5K | EDGAR |
| 2026-08-24 | ANET | Exer (M) | +538 | $0 | EDGAR |
| 2026-08-04 | RBRK | Sell (S) | −721 | -$54.1K | EDGAR |
| 2026-07-02 | BRZE | Grant (A) | +7,753 | $0 | EDGAR |
| 2026-07-01 | RBRK | Sell (S) | −721 | -$58.8K | EDGAR |
| 2026-06-24 | RBRK | Sell (S) | −676 | -$50.7K | EDGAR |
| 2026-06-11 | FROG | Gift (G) | −3,913 | $0 | EDGAR |
| 2026-06-03 | RBRK | Mixed | +3,709 | -$58.2K | EDGAR |
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.