Tiffany Olson
CIK 1442172 · View on SEC EDGAR ↗
Insider
First SEC filing: June 12, 2026 · Latest: June 12, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 4 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 | MDXG | A | 50,913 | $3.64 | $185,323 | 108,510 Direct | +88.40% | Acquired | 21.8% (price as of 2026-08-20) |
| May 28, 2026 | CSTL | A | 11,766 | — | — | 11,766 Direct | — | Acquired | (price as of 2026-08-20) |
| June 18, 2025 | MDXG | A | 28,609 | $6.47 | $185,100 | 57,597 Direct | +98.69% | Acquired | -31.5% (price as of 2026-08-20) |
| June 5, 2024 | MDXG | A | 28,988 | $7.26 | $210,453 | 28,988 Direct | — | Acquired | -38.9% (price as of 2026-08-20) |
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.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| May 28, 2026 | CSTL | Restricted Stock Units | Common Stock (11,766) | — | — | 11,766 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).