David Vincent Cullen
CIK 2117813 · View on SEC EDGAR ↗
Insider
First SEC filing: March 18, 2026 · Latest: March 18, 2026
On this page
Insider at
Insider transactions
0 buys (P)
1 sells (S)
Net:
$-11,029
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
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 19, 2026 | CSTE | S | 7,025 | $1.57 | $11,029 | 675 Direct | -91.23% | Disposed | 110.2% (price as of 2026-08-19) |
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) 8 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 18, 2026 | CSTE | Ordinary Shares | — | Indirect |
| March 18, 2026 | CSTE | Stock Option→ Ordinary Shares (33,000) | 33,000 | Indirect |
| March 18, 2026 | CSTE | Stock Option→ Ordinary Shares (6,000) | 6,000 | Indirect |
| March 18, 2026 | CSTE | Stock Option→ Ordinary Shares (6,000) | 6,000 | Indirect |
| March 18, 2026 | CSTE | Stock Option→ Ordinary Shares (6,000) | 6,000 | Indirect |
| March 18, 2026 | CSTE | Stock Option→ Ordinary Shares (54,000) | 54,000 | Indirect |
| March 18, 2026 | CSTE | Stock Option→ Ordinary Shares (1,400) | 1,400 | Indirect |
| March 18, 2026 | CSTE | Stock Option→ Ordinary Shares (28,700) | 28,700 | Indirect |