Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 29 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

29 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Sept. 13, 2023 PRTA S 10b5-1 2,000 $55.48 $110,960 0 Direct -100.00% Disposed -85.1% (price as of 2026-10-05)
Aug. 16, 2023 PRTA S 10b5-1 374 $59.74 $22,343 0 Direct -100.00% Disposed -86.2% (price as of 2026-10-05)
Aug. 16, 2023 PRTA S 10b5-1 748 $58.93 $44,080 374 Direct -66.67% Disposed -86.0% (price as of 2026-10-05)
Aug. 16, 2023 PRTA S 10b5-1 878 $58.15 $51,056 1,122 Direct -43.90% Disposed -85.8% (price as of 2026-10-05)
July 12, 2023 PRTA S 10b5-1 92 $68.20 $6,274 0 Direct -100.00% Disposed -87.9% (price as of 2026-10-05)
July 12, 2023 PRTA S 10b5-1 1,908 $67.48 $128,752 92 Direct -95.40% Disposed -87.7% (price as of 2026-10-05)
June 16, 2023 PRTA S 10b5-1 7,331 $74.00 $542,494 0 Direct -100.00% Disposed -88.8% (price as of 2026-10-05)
June 14, 2023 PRTA S 10b5-1 655 $75.49 $49,446 0 Direct -100.00% Disposed -89.0% (price as of 2026-10-05)
June 14, 2023 PRTA S 10b5-1 2,534 $74.59 $189,011 655 Direct -79.46% Disposed -88.9% (price as of 2026-10-05)
June 14, 2023 PRTA S 10b5-1 971 $73.31 $71,184 3,189 Direct -23.34% Disposed -88.7% (price as of 2026-10-05)
June 14, 2023 PRTA S 10b5-1 509 $72.45 $36,877 4,160 Direct -10.90% Disposed -88.6% (price as of 2026-10-05)
March 15, 2023 PRTA S 10b5-1 6,000 $48.16 $288,960 6,000 Direct -50.00% Disposed -82.8% (price as of 2026-10-05)
March 15, 2023 PRTA S 10b5-1 6,000 $48.66 $291,960 0 Direct -100.00% Disposed -83.0% (price as of 2026-10-05)
Jan. 3, 2023 COYA P 2,000 · · 2,000 Direct · Acquired (price as of 2026-10-05)
Jan. 3, 2023 COYA P 1,000 · · 1,000 Direct · Acquired (price as of 2026-10-05)
Dec. 1, 2022 PRTA S 10b5-1 4,000 $62.51 $250,040 0 Direct -100.00% Disposed -86.8% (price as of 2026-10-05)
Nov. 1, 2022 PRTA S 10b5-1 511 $62.41 $31,892 0 Direct -100.00% Disposed -86.7% (price as of 2026-10-05)
Nov. 1, 2022 PRTA S 10b5-1 3,489 $61.82 $215,690 511 Direct -87.22% Disposed -86.6% (price as of 2026-10-05)
Oct. 3, 2022 PRTA S 10b5-1 4,000 $60.90 $243,600 0 Direct -100.00% Disposed -86.4% (price as of 2026-10-05)
Sept. 15, 2022 PRTA S 10b5-1 4,000 $30.00 $120,000 0 Direct -100.00% Disposed -72.4% (price as of 2026-10-05)
Aug. 1, 2022 PRTA S 10b5-1 4,000 $30.52 $122,080 0 Direct -100.00% Disposed -72.9% (price as of 2026-10-05)
July 6, 2022 PRTA S 10b5-1 8,000 $30.00 $240,000 0 Direct -100.00% Disposed -72.4% (price as of 2026-10-05)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Feb. 27, 2024 PRTA Stock Option (Right to Buy) Ordinary Shares (85,000) $30.30 Feb. 27, 2034 85,000 Acquired
Jan. 1, 2024 COYA Stock Option (right to buy) Common Stock, par value $0.0001 per share (5,000) $7.41 Jan. 1, 2034 5,000 Acquired
Sept. 13, 2023 PRTA Stock Option (Right to Buy) Ordinary Shares (2,000) $24.90 April 5, 2031 2,000 Disposed
Aug. 16, 2023 PRTA Stock Option (Right to Buy) Ordinary Shares (2,000) $24.90 April 5, 2031 2,000 Disposed
July 12, 2023 PRTA Stock Option (Right to Buy) Ordinary Shares (2,000) $24.90 April 5, 2031 2,000 Disposed
June 16, 2023 PRTA Stock Option (Right to Buy) Ordinary Shares (7,331) $24.90 April 5, 2031 7,331 Disposed
June 14, 2023 PRTA Stock Option (Right to Buy) Ordinary Shares (4,669) $24.90 April 5, 2031 4,669 Disposed
March 15, 2023 PRTA Stock Option (Right to Buy) Ordinary Shares (12,000) $24.90 April 5, 2031 12,000 Disposed
March 2, 2023 PRTA Stock Option (Right to Buy) Ordinary Shares (48,000) $52.97 March 2, 2033 48,000 Acquired
Jan. 3, 2023 COYA Warrant to Purchase Common Stock Common Stock, par value $0.0001 per share (1,000) $7.50 Jan. 3, 2025 1,000 Acquired
Dec. 1, 2022 PRTA Stock Option (Right to Buy) Ordinary Shares (4,000) $24.90 April 5, 2031 4,000 Disposed
Nov. 1, 2022 PRTA Stock Option (Right to Buy) Ordinary Shares (4,000) $24.90 April 5, 2031 4,000 Disposed
Oct. 3, 2022 PRTA Stock Option (Right to Buy) Ordinary Shares (4,000) $24.90 April 5, 2031 4,000 Disposed
Sept. 15, 2022 PRTA Stock Option (Right to Buy) Ordinary Shares (4,000) $24.90 April 5, 2031 4,000 Disposed
Aug. 1, 2022 PRTA Stock Option (Right to Buy) Ordinary Shares (4,000) $24.90 April 5, 2031 4,000 Disposed
July 6, 2022 PRTA Stock Option (Right to Buy) Ordinary Shares (8,000) $24.90 April 5, 2031 8,000 Disposed
Feb. 23, 2022 PRTA Stock Option (Right to Buy) Ordinary Shares (85,000) $32.45 Feb. 23, 2032 85,000 Acquired
April 5, 2021 PRTA Stock Option (Right to Buy) Ordinary Shares (250,000) $24.90 April 5, 2031 250,000 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 1 holding

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Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
Dec. 28, 2022 COYA Stock Option (right to buy)→ Common Stock, par value $0.0001 per share · Direct

Compensation (DEF 14A)

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Matched by name from proxy statements (DEF 14A) — verify against the filing.

PRTA

M.D., Ph.D.(4) Chief Medical Officer
Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2021 $364,044 $50,000 · $4,319,200 $290,938 · $14,500 $5,038,682

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.