Insider · CIK 0001805226
Brandon S. Smith
Files at PRTA (PROTHENA CORP PUBLIC LTD CO). First filing Oct 11, 2023, latest Oct 11, 2023.
In brief
Brandon S. Smith files SEC Form 4 as COO at PRTA (PROTHENA CORP PUBLIC LTD CO). Since Oct 11, 2023, Brandon S. Smith has reported 0 open-market buys worth $0 and 1 open-market sell worth $187k, the latest filed on Oct 11, 2023.
A track record needs three past buys with six months of prices behind them; Brandon S. Smith has 0, so none is measured yet.
The newest scored trade: sold $187k of PRTA on Oct 11, 2023, filed Oct 11, 2023, scored 25 (weak), under a 10b5-1 plan.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
PRTA: PROTHENA CORP PUBLIC LTD CO
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 25Weak | PROTHENA CORP PUBLIC LTD CO | $187k 4,000 shares | -100% | +4% from low-40% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Oct 11, 2023 | PRTA PROTHENA CORP PUBLIC LTD CO | 4,000 0.01% of outstanding | $189k | Oct 11, 2023 | $727k |
Transactions
Every row this insider has filed, 9 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Jul 28, 2026 | PRTA PROTHENA CORP PUBLIC LTD CO | MOption exercise Ordinary Shares, par value $0.01 per share | +78,000 | - | - | 130,000 | Jul 30, 2026 |
| Jul 28, 2026 | PRTA PROTHENA CORP PUBLIC LTD CO | DDisposition to issuer Ordinary Shares, par value $0.01 per share | -78,000 | $8.56 | $668k | 52,000 | Jul 30, 2026 |
| Jul 28, 2026 | PRTA PROTHENA CORP PUBLIC LTD CO | MOption exercise Restricted Stock Unitsderivative | -78,000 | $0.00 | $0 | 0 | Jul 30, 2026 |
| Mar 3, 2026 | PRTA PROTHENA CORP PUBLIC LTD CO | AGrant or award Stock Option (Right to Buy)derivative | +190,000 | $0.00 | $0 | 190,000 | Mar 5, 2026 |
| Jul 28, 2025 | PRTA PROTHENA CORP PUBLIC LTD CO | AGrant or award Ordinary Shares, par value $0.01 per share | +130,000 | $0.00 | $0 | 130,000 | Jul 30, 2025 |
| Oct 11, 2023 | PRTA PROTHENA CORP PUBLIC LTD CO | MOption exercise Ordinary Shares, par value $0.01 per share10b5-1 | +4,000 | $11.12 | $44k | 4,000 | Oct 11, 2023 |
| Oct 11, 2023 | PRTA PROTHENA CORP PUBLIC LTD CO | SOpen-market sale Ordinary Shares, par value $0.01 per share10b5-1 | -3,556 | $46.62 | $166k | 444 | Oct 11, 2023 |
| Oct 11, 2023 | PRTA PROTHENA CORP PUBLIC LTD CO | SOpen-market sale Ordinary Shares, par value $0.01 per share10b5-1 | -444 | $47.74 | $21k | 0 | Oct 11, 2023 |
| Oct 11, 2023 | PRTA PROTHENA CORP PUBLIC LTD CO | MOption exercise Stock Option (Right to Buy)derivative10b5-1 | -4,000 | $0.00 | $0 | 218,667 | Oct 11, 2023 |
Questions about Brandon S. Smith
Answered from the filings on this page, as of the latest one.
Is Brandon S. Smith buying or selling?
Not in the last 12 months. Brandon S. Smith's latest open-market trade on SEC Form 4 was sold $187k of PRTA on Oct 11, 2023.
How did Brandon S. Smith's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Brandon S. Smith has 0.
Where does Brandon S. Smith file Form 4?
Brandon S. Smith has filed Form 4 at PRTA (PROTHENA CORP PUBLIC LTD CO) as Chief Operating Officer. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.