George Simeon (CIK 0001595117)

Latest company ownership

Shares held
1,946,564
Last filed at
Oct 14, 2025
Confidence Score
81.9
2025Q4
Confidence Score History
2024Q3 2025Q4
Shares held
1,730,179
Last filed at
Jul 17, 2025
Confidence Score
59.4
2025Q4
Confidence Score History
2016Q4 2025Q4
Role: 10% Owner
Shares held
1,658,780
Last filed at
May 15, 2023
Confidence Score
50.0
2025Q4
Confidence Score History
2022Q1 2025Q4
Role: Director
Shares held
22,500
Last filed at
Jun 14, 2024
Confidence Score
50.0
2025Q4
Confidence Score History
2022Q2 2025Q4
Shares held
19,000
Last filed at
Jun 17, 2024
Confidence Score
50.0
2025Q4
Confidence Score History
2021Q1 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Oct 9, 2025 Oct 14, 2025 Zenas BioPharma, Inc. 10% Owner Buy 92.5 +126,315 2.57% $2.4M
Jul 16, 2025 Jul 17, 2025 CRISPR Therapeutics AG Director Buy 100.0 +989,812 94.36% $51.5M
Sep 16, 2024 Sep 16, 2024 Zenas BioPharma, Inc. 10% Owner Buy 100.0 +2,235,294 83.52% $38M
Mar 27, 2024 Mar 28, 2024 Nkarta, Inc. Director Buy 100.0 +2,000,000 150.00% $20M
May 11, 2023 May 15, 2023 Arcellx, Inc. 10% Owner Sell 15.0 -1,012,833 -18.42% $45.6M
Dec 16, 2022 Dec 20, 2022 Design Therapeutics, Inc. Director Buy 100.0 +900,000 16.00% $7.6M
Apr 28, 2022 Apr 29, 2022 Nkarta, Inc. Director Buy 100.0 +1,333,333 100.00% $20M
Feb 8, 2022 Feb 10, 2022 Arcellx, Inc. 10% Owner Buy 100.0 +1,666,667 43.48% $25M
Mar 30, 2021 Apr 1, 2021 Design Therapeutics, Inc. Director Buy 93.8 +250,000 4.65% $5M
Oct 24, 2016 Oct 26, 2016 CRISPR Therapeutics AG Director Buy 85.0 +66,500 2.11% $931K