Insider at

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Insider transactions

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0 buys (P) 0 sells (S) Net: $0 + 23 non-open-market transactions below 12 months to the week close of 2026-10-23

Price change vs the latest weekly close (updated to the current quote in your browser when available), split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

23 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Dec. 2, 2014 AKBA P 5,000 $11.92 $59,600 5,000 Direct · Acquired -95.2% (price as of )

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.

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DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
June 9, 2026 KLRA Stock Option (right to buy) Common Stock (38,094) $5.25 Sept. 19, 2034 38,094 Disposed
June 9, 2026 UPB Stock Option (Right to Buy) Common Stock (17,096) $6.69 June 8, 2036 17,096 Acquired
April 16, 2026 KLRA Stock Option (right to buy) Common Stock (300,000) $16.00 April 16, 2036 300,000 Acquired
April 16, 2026 KLRA Stock Option (right to buy) Common Stock (300,000) $16.00 April 16, 2036 300,000 Acquired
June 10, 2025 UPB Stock Option (Right to Buy) Common Stock (17,096) $11.59 June 9, 2035 17,096 Acquired
Oct. 10, 2024 UPB Stock Option (Right to Buy) Common Stock (17,096) $17.00 Oct. 9, 2034 17,096 Acquired
June 23, 2022 ATRA Non-Qualified Stock Option (Right to Buy) Common Stock (31,500) $7.35 June 22, 2032 31,500 Acquired
June 9, 2022 IMA Stock Option (Right to Buy) Common Stock (13,419) $4.85 June 9, 2032 13,419 Acquired
Dec. 21, 2021 IMA Stock Option (Right to Buy) Common Stock (13,419) $14.92 Dec. 21, 2031 13,419 Acquired
June 8, 2021 ATRA Non-Qualified Stock Option (Right to Buy) Common Stock (17,500) $13.80 June 7, 2031 17,500 Acquired
April 29, 2020 ATRA Non-Qualified Stock Option (Right to Buy) Common Stock (71,500) $8.53 April 28, 2030 71,500 Acquired
June 14, 2018 AKBA Stock Option (Right to buy) Common Stock (12,500) $11.14 June 14, 2028 12,500 Acquired
June 15, 2017 AKBA Stock Option (Right to buy) Common Stock (12,500) $14.37 June 15, 2027 12,500 Acquired
Jan. 3, 2017 PTCT Stock Option (Right To Buy) Common Stock (12,000) $11.23 Jan. 2, 2027 12,000 Acquired
June 16, 2016 AKBA Stock Option (Right to buy) Common Stock (12,500) $8.56 June 16, 2026 12,500 Acquired
Jan. 4, 2016 PTCT Stock Option (right to buy) Common Stock (12,000) $30.86 Jan. 3, 2026 12,000 Acquired
June 10, 2015 AKBA Stock Option (Right to Buy) Common Stock (5,000) $7.86 June 10, 2025 5,000 Acquired
Jan. 2, 2015 PTCT Stock Option (right to buy) Common Stock (12,000) $51.00 Jan. 1, 2025 12,000 Acquired
Sept. 12, 2014 AKBA Stock Option (Right to Buy) Common Stock (10,000) $21.08 Sept. 12, 2024 10,000 Acquired
June 10, 2014 PTCT Stock Option (right to buy) Common Stock (20,000) $25.38 June 9, 2024 20,000 Acquired

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

Initial ownership (Form 3) 15 holdings

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

DateTickerSecuritySharesOwnership
April 16, 2026 KLRA Stock Option (right to buy)→ Common Stock (855,920) 855,920 Direct
April 16, 2026 KLRA Stock Option (right to buy)→ Common Stock (427,960) 427,960 Direct
April 16, 2026 KLRA Stock Option (right to buy)→ Common Stock (574,332) 574,332 Direct
April 16, 2026 KLRA Stock Option (right to buy)→ Common Stock (287,166) 287,166 Direct
April 16, 2026 KLRA Stock Option (right to buy)→ Common Stock (294,649) 294,649 Direct
April 16, 2026 KLRA Stock Option (right to buy)→ Common Stock (147,324) 147,324 Direct
April 16, 2026 KLRA Stock Option (right to buy)→ Common Stock (1,331,116) 1,331,116 Direct
Oct. 10, 2024 UPB Stock Option (Right to Buy)→ Common Stock (164,502) 164,502 Direct
Oct. 10, 2024 UPB Stock Option (Right to Buy)→ Common Stock (107,312) 107,312 Direct
Oct. 10, 2024 UPB Stock Option (Right to Buy)→ Common Stock (9,563) 9,563 Direct
Oct. 10, 2024 UPB Stock Option (Right to Buy)→ Common Stock (31,470) 31,470 Direct
Oct. 10, 2024 UPB Stock Option (Right to Buy)→ Common Stock (113,554) 113,554 Direct
March 25, 2021 IMA Stock Option (Right to Buy)→ Common Stock (54,006) 54,006 Direct
March 25, 2021 IMA Stock Option (Right to Buy)→ Common Stock (71,987) 71,987 Direct
March 25, 2021 IMA Stock Option (Right to Buy)→ Common Stock (97,847) 97,847 Direct