Michael John Isaacs
CIK 2127815 · 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)
1 sells (S)
Net:
$-71,029
+ 1 non-open-market transaction 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
1 other filing hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| July 29, 2026 | PRTA | S 10b5-1 | 8,386 | $8.47 | $71,029 | 35,745 Direct | -19.00% | Disposed | 5.8% (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.
Initial ownership (Form 3) 9 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| June 12, 2026 | PRTA | Ordinary Shares, par value $0.01 per share | 48,825 | Direct |
| June 12, 2026 | PRTA | Stock Option (Right to Buy)→ Ordinary Shares (17,500) | 17,500 | Direct |
| June 12, 2026 | PRTA | Stock Option (Right to Buy)→ Ordinary Shares (10,000) | 10,000 | Direct |
| June 12, 2026 | PRTA | Stock Option (Right to Buy)→ Ordinary Shares (8,250) | 8,250 | Direct |
| June 12, 2026 | PRTA | Stock Option (Right to Buy)→ Ordinary Shares (8,800) | 8,800 | Direct |
| June 12, 2026 | PRTA | Stock Option (Right to Buy)→ Ordinary Shares (12,000) | 12,000 | Direct |
| June 12, 2026 | PRTA | Stock Option (Right to Buy)→ Ordinary Shares (8,612) | 8,612 | Direct |
| June 12, 2026 | PRTA | Stock Option (Right to Buy)→ Ordinary Shares (37,500) | 37,500 | Direct |
| June 12, 2026 | PRTA | Stock Option (Right to Buy)→ Ordinary Shares (50,000) | 50,000 | Direct |