Roberto Hoornweg
CIK 2053363 · View on SEC EDGAR ↗
Insider
First SEC filing: March 3, 2025 · Latest: June 12, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 3 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 10, 2026 | MKTX | A | 1,390 | — | — | 2,389 Direct | +139.14% | Acquired | (price as of 2026-08-21) |
| June 4, 2025 | MKTX | A | 784 | — | — | 999 Direct | +364.65% | Acquired | (price as of 2026-08-21) |
| March 1, 2025 | MKTX | A | 215 | — | — | 215 Direct | — | Acquired | (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 3, 2025 | MKTX | Common Stock, par value $0.003 per share | 0 | Direct |