Simeon George

CIK 1595117 · View on SEC EDGAR ↗

Insider

First SEC filing: June 11, 2026 · Latest: June 11, 2026

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 35 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

35 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
July 16, 2025 CRSP P 960,983 $52.03 $49,999,945 1,730,179 Indirect +124.93% Acquired 10.5% (price as of 2026-08-20)
July 16, 2025 CRSP P 22,319 $52.03 $1,161,258 238,897 Indirect +10.31% Acquired 10.5% (price as of 2026-08-20)
July 16, 2025 CRSP P 6,510 $52.03 $338,715 69,687 Indirect +10.30% Acquired 10.5% (price as of 2026-08-20)
March 27, 2024 NKTX P 451,659 $10.00 $4,516,590 451,659 Indirect — Acquired -74.9% (price as of 2026-08-20)
March 27, 2024 NKTX P 1,548,341 $10.00 $15,483,410 1,548,341 Indirect — Acquired -74.9% (price as of 2026-08-20)
Dec. 20, 2022 DSGN P 40,000 $8.14 $325,600 6,526,476 Indirect +0.62% Acquired 91.8% (price as of 2026-08-20)
Dec. 19, 2022 DSGN P 360,000 $8.63 $3,106,800 6,486,476 Indirect +5.88% Acquired 80.9% (price as of 2026-08-20)
Dec. 16, 2022 DSGN P 500,000 $8.28 $4,140,000 6,126,476 Indirect +8.89% Acquired 88.5% (price as of 2026-08-20)
April 28, 2022 NKTX P 666,666 $15.00 $9,999,990 666,666 Indirect — Acquired -83.3% (price as of 2026-08-20)
April 28, 2022 NKTX P 666,667 $15.00 $10,000,005 666,667 Indirect — Acquired -83.3% (price as of 2026-08-20)
March 30, 2021 DSGN P 250,000 $20.00 $5,000,000 5,626,476 Indirect +4.65% Acquired -22.0% (price as of 2026-08-20)
Oct. 24, 2016 CRSP P 66,500 $14.00 $931,000 3,220,627 Indirect +2.11% Acquired 310.7% (price as of 2026-08-20)

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.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
June 10, 2026 NKTX Stock Option (right to buy) Common Stock (37,000) $2.46 June 9, 2036 37,000 Acquired
June 9, 2026 DSGN Stock Option (right to buy) Common Stock (30,000) $10.55 June 8, 2036 30,000 Acquired
June 5, 2026 CRSP Stock Option (Right to Buy) Common Shares (13,000) $51.84 June 5, 2036 13,000 Acquired
June 10, 2025 DSGN Stock Option (right to buy) Common Stock (19,000) $4.01 June 9, 2035 19,000 Acquired
June 5, 2025 NKTX Stock Option (right to buy) Common Stock (46,000) $1.83 June 4, 2035 46,000 Acquired
June 5, 2025 CRSP Stock Option (Right to Buy) Common Shares (13,000) $38.57 June 5, 2035 13,000 Acquired
June 13, 2024 DSGN Stock Option (right to buy) Common Stock (19,000) $3.82 June 12, 2034 19,000 Acquired
June 13, 2024 NKTX Stock Option (right to buy) Common Stock (22,500) $6.23 June 12, 2034 22,500 Acquired
May 30, 2024 CRSP Stock Option (Right to buy) Common Shares (13,000) $54.06 May 30, 2034 13,000 Acquired
June 8, 2023 CRSP Stock Option (Right to Buy) Common Shares (13,000) $62.59 June 8, 2033 13,000 Acquired
June 7, 2023 NKTX Stock Option (right to buy) Common Stock (22,500) $4.86 June 6, 2033 22,500 Acquired
May 31, 2023 DSGN Stock Option (right to buy) Common Stock (15,000) $5.63 May 30, 2033 15,000 Acquired
June 15, 2022 DSGN Stock Option (right to buy) Common Stock (15,000) $13.69 June 14, 2032 15,000 Acquired
June 9, 2022 CRSP Stock Option (Right to Buy) Common Shares (12,000) $71.70 June 9, 2032 12,000 Acquired
June 8, 2022 NKTX Stock Option (right to buy) Common Stock (16,000) $14.95 June 7, 2032 16,000 Acquired
June 13, 2021 NKTX Stock Option (right to buy) Common Stock (16,511) $25.03 June 12, 2031 16,511 Acquired
June 10, 2021 CRSP Stock Option (Right to Buy) Common Shares (10,000) $123.71 June 10, 2031 10,000 Acquired
March 30, 2021 DSGN Series B Preferred Stock Common Stock (936,637) — — 1,526,718 Disposed
March 30, 2021 DSGN Series A Preferred Stock Common Stock (4,439,839) — — 7,236,938 Disposed
March 25, 2021 DSGN Stock Option (right to buy) Common Stock (15,000) $20.00 March 24, 2031 15,000 Acquired
July 9, 2020 NKTX Stock Option (right to buy) Common Stock (10,700) $18.00 July 8, 2030 10,700 Acquired
June 11, 2020 CRSP Stock Option (Right to Buy) Common Shares (15,000) $59.70 June 11, 2030 15,000 Acquired
June 11, 2019 CRSP Stock Option (Right to Buy) Common Shares (15,000) $43.52 June 11, 2029 15,000 Acquired
June 15, 2018 CRSP Stock Option (Right to Buy) Common Shares (15,000) $59.31 June 15, 2028 15,000 Acquired
May 31, 2017 CRSP Stock Option (Right to Buy) Common Shares (15,000) $13.62 May 31, 2027 15,000 Acquired
Oct. 24, 2016 CRSP Series B Preferred Shares Common Shares (211,567) — — 211,567 Disposed
Oct. 24, 2016 CRSP Series A-3 Preferred Shares Common Shares (2,942,560) — — 2,942,560 Disposed
Oct. 18, 2016 CRSP Stock Option (Right to Buy) Common Shares (30,000) $14.00 Oct. 18, 2026 30,000 Acquired

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

Initial ownership (Form 3) 6 holdings

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

Date Ticker Security Shares Ownership
March 25, 2021 DSGN Series A Preferred Stock→ Common Stock (4,439,839) 4,439,839 Indirect
March 25, 2021 DSGN Series B Preferred Stock→ Common Stock (936,637) 936,637 Indirect
July 9, 2020 NKTX Series A Preferred Stock→ Common Stock — Indirect
July 9, 2020 NKTX Series B Preferred Stock→ Common Stock — Indirect
Oct. 18, 2016 CRSP Series A-3 Preferred Shares→ Common Shares (2,942,560) 2,942,560 Indirect
Oct. 18, 2016 CRSP Series B Preferred Shares→ Common Shares (211,567) 211,567 Indirect