Sytse Sijbrandij
CIK 1886022 · Executive Chair of the Board · last filed 2026-05-18
"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
$420.29M
Companies
1
Total Filings
39
Lifetime Open-Market Net
-$690.39M
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 |
|---|---|---|---|---|---|---|---|
| GTLB | Director | 15,123,659 | $27.79 | $420.29M | -$690.39M | 39 | 2026-05-18 |
Recent Filings · Page 3 of 4
39 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-11-20 | GTLB | Mixed | — | -$16.87M | EDGAR |
| 2024-10-16 | GTLB | Mixed | — | -$3.06M | EDGAR |
| 2024-09-18 | GTLB | Mixed | — | -$2.99M | EDGAR |
| 2024-08-15 | GTLB | Mixed | — | -$2.39M | EDGAR |
| 2024-07-17 | GTLB | Mixed | — | -$2.74M | EDGAR |
| 2024-06-20 | GTLB | Mixed | — | -$2.44M | EDGAR |
| 2024-05-17 | GTLB | Mixed | — | -$3.15M | EDGAR |
| 2024-04-17 | GTLB | Mixed | — | -$3.08M | EDGAR |
| 2024-03-19 | GTLB | Mixed | — | -$16.47M | EDGAR |
| 2024-02-16 | GTLB | Mixed | — | -$28.14M | EDGAR |
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.