Bradford D. Osborne

Insider

First SEC filing: May 6, 2021 · Latest: May 6, 2021

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 1 non-open-market transaction 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

No open-market trades on record; showing all filings.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 21, 2021	PGEN	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-21)

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.

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
April 21, 2021	PGEN	Option to Purchase Common Stock (Right to Buy)	Common Stock (30,000)	$8.17	April 21, 2031	30,000	Acquired

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

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

Date	Ticker	Security	Shares	Ownership
May 6, 2021	PGEN	Common Stock	60,380	Direct
May 6, 2021	PGEN	Option to Purchase Common Stock (Right to Buy)→ Common Stock (4,008)	4,008	Direct
May 6, 2021	PGEN	Option to Purchase Common Stock (Right to Buy)→ Common Stock (15,586)	15,586	Direct
May 6, 2021	PGEN	Option to Purchase Common Stock (Right to Buy)→ Common Stock (20,783)	20,783	Direct
May 6, 2021	PGEN	Option to Purchase Common Stock (Right to Buy)→ Common Stock (15,059)	15,059	Direct
May 6, 2021	PGEN	Option to Purchase Common Stock (Right to Buy)→ Common Stock (40,000)	40,000	Direct
May 6, 2021	PGEN	Option to Purchase Common Stock (Right to Buy)→ Common Stock (75,000)	75,000	Direct
May 6, 2021	PGEN	Restricted Stock Units→ Common Stock (4,340)	4,340	Direct
May 6, 2021	PGEN	Restricted Stock Units→ Common Stock (13,774)	13,774	Direct