$PRTA 4/A SEC Filings

Filed On	Filing
13 Jul 2021	Form 4/A: Henney Christopher S, Director Received 23,892 shares by exercise or conversion ($234K) · Sold 23,892 shares ($1.33M) · Acquired 23,892 Stock Option (Right to Buy) (Option Exercise/Conversion)
26 Feb 2021	Form 4/A: EcoR1 Capital, Llc, 10% owner Acquired 2,500 Call Option (Open Market Purchase) ($9.19K)
23 Feb 2021	Form 4/A: EcoR1 Capital, Llc, 10% owner Bought 44,100 shares ($1.04M)
05 Aug 2016	Form 4/A: Henney Christopher S, Director Received 10,000 shares by exercise or conversion ($66.5K) · Sold 10,000 shares ($629K)
23 Oct 2014	Form 4/A: Walker Karin L, See Remarks Received 2,500 shares by exercise or conversion ($24.4K) · Sold 2,500 shares ($50.2K)
19 Mar 2014	Form 4/A: Schenk Dale B., Director Granted 105,000 Stock Option (right to buy)
19 Mar 2014	Form 4/A: Schenk Dale B., Director Granted 450,000 Stock Option (right to buy)

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