Prothena (NASDAQ: PRTA) COO exercises 78,000 RSUs, returns shares at $8.56
Rhea-AI Filing Summary
PROTHENA CORP PUBLIC LTD CO reported that Chief Operating Officer Brandon S. Smith exercised 78,000 restricted stock units into the same number of ordinary shares on July 28, 2026, then disposed of 78,000 shares back to the issuer at $8.56 per share. These RSUs were part of a 130,000-unit grant from July 28, 2025, of which 52,000 RSUs remain subject to vesting.
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Insights
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Insider Trade Summary
78,000 shares exercised/converted
Exercise
3 txns
Insider
Smith Brandon S.
Role
Chief Operating Officer
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Restricted Stock Units F2, F1, F3 | 78,000 | $0.00 | $0.00 |
| Exercise | Ordinary Shares, par value $0.01 per share F1 | 78,000 | -- | -- |
| Disposition | Ordinary Shares, par value $0.01 per share | 78,000 | $8.56 | $668K |
Holdings After Transaction:
Restricted Stock Units — 0 shares (Direct);
Ordinary Shares, par value $0.01 per share — 52,000 shares (Direct)
Footnotes (3)
- F1. Each restricted stock unit ("RSU") represents the contingent right to receive one share of the Issuer's Ordinary Shares upon vesting.
- F2. These RSUs reported in Table II were granted to the Reporting Person on July 28, 2025 as part of an aggregate award of 130,000 RSUs and initially reported in Table I of the Form 4 filed on July 30, 2025, because they were solely settleable in shares at the time of grant. These RSUs are being moved to Table II as of this Form 4.
- F3. These RSUs reported in Table II are fully vested as of July 28, 2026 (the one-year anniversary of the grant date). The remainder of the 130,000 RSUs reported in Table I (52,000 RSUs) are subject to vesting.
Key Figures
RSUs exercised: 78,000 units
Shares disposed to issuer: 78,000 shares
Disposition price: $8.56 per share
+2 more
5 metrics
RSUs exercised
78,000 units
Restricted stock units converted into ordinary shares on July 28, 2026
Shares disposed to issuer
78,000 shares
Ordinary shares returned to issuer at $8.56 per share on July 28, 2026
Disposition price
$8.56 per share
Price for 78,000 ordinary shares disposed of to issuer
Original RSU grant
130,000 units
Aggregate RSU award granted on July 28, 2025
Unvested RSUs remaining
52,000 units
Portion of the 130,000 RSU grant still subject to vesting
Key Terms
Restricted Stock Units, disposition to issuer, contingent right, fully vested
4 terms
Restricted Stock Units financial
"Each restricted stock unit ("RSU") represents the contingent right to receive one share"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
disposition to issuer financial
"transaction_code_description": "Disposition to issuer""
contingent right financial
"represents the contingent right to receive one share of the Issuer's Ordinary Shares"
fully vested financial
"These RSUs reported in Table II are fully vested as of July 28, 2026"
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What insider transaction did Prothena (PRTA) report for Brandon S. Smith?
Prothena reported that COO Brandon S. Smith exercised 78,000 RSUs into ordinary shares and then disposed of 78,000 shares back to the issuer at $8.56 per share on July 28, 2026, resulting in no net change from this RSU block.
How many restricted stock units did Prothena (PRTA) grant to Brandon S. Smith in 2025?
Brandon S. Smith received an aggregate award of 130,000 restricted stock units on July 28, 2025. Of this grant, 78,000 RSUs have fully vested and were exercised on July 28, 2026, while 52,000 RSUs remain subject to vesting conditions.
What portion of Brandon S. Smith’s Prothena (PRTA) RSU grant remains unvested?
Out of Brandon S. Smith’s 130,000 RSU grant, 52,000 RSUs remain subject to vesting. The other 78,000 RSUs fully vested by July 28, 2026 and were exercised into ordinary shares on that date before being disposed of to the issuer.
When did Brandon S. Smith’s Prothena (PRTA) RSUs vest and get exercised?
The 78,000 RSUs vested on July 28, 2026, one year after the July 28, 2025 grant date. On the same date, they were exercised into 78,000 ordinary shares, which were then disposed of back to the issuer at $8.56 per share.