Gillis Steven (CIK 0001229592)

Latest company ownership

Shares held
27,800,931
Last filed at
Oct 29, 2025
Confidence Score
83.8
2025Q4
Confidence Score History
2023Q3 2025Q4
Shares held
2,343,750
Last filed at
Feb 10, 2021
Confidence Score
50.0
2025Q4
Confidence Score History
2024Q1 2025Q4
MTSR - Metsera, Inc.
Role: 10% Owner
Shares held
1,139,951
Last filed at
Feb 3, 2025
Confidence Score
50.6
2025Q4
Confidence Score History
2025Q1 2025Q4
PRME - Prime Medicine, Inc.
Role: 10% Owner
Shares held
367,175
Last filed at
Oct 26, 2022
Confidence Score
59.4
2025Q4
Confidence Score History
2022Q4 2025Q4
BOLD - Boundless Bio, Inc.
Role: 10% Owner
Shares held
366,301
Last filed at
Apr 4, 2024
Confidence Score
50.0
2025Q4
Confidence Score History
2024Q2 2025Q4
PULM - Pulmatrix, Inc.
Role: Director
Shares held
10,000
Last filed at
Sep 1, 2020
Confidence Score
50.0
2025Q4
Confidence Score History
2015Q2 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Oct 27, 2025 Oct 29, 2025 Neumora Therapeutics, Inc. 10% Owner Buy 95.0 +1,915,700 6.00% ✗ $5M
Aug 1, 2025 Aug 1, 2025 Prime Medicine, Inc. 10% Owner Buy 100.0 +3,030,300 19.61% ✗ $10M
Feb 3, 2025 Feb 3, 2025 Metsera, Inc. 10% Owner Buy 97.5 +2,222,222 9.04% ✗ $40M
Apr 2, 2024 Apr 4, 2024 Boundless Bio, Inc. 10% Owner Buy 100.0 +200,000 12.01% ✗ $3.2M
Feb 15, 2024 Feb 20, 2024 Prime Medicine, Inc. 10% Owner Buy 100.0 +3,200,000 26.11% ✗ $20M
Feb 8, 2024 Feb 12, 2024 Sana Biotechnology, Inc. 10% Owner Buy 96.3 +1,818,181 5.39% ✗ $10M
Nov 13, 2023 Nov 15, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 75.0 +35,010 0.85% ✗ $412.1K
Nov 8, 2023 Nov 13, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 92.5 +140,605 3.55% ✗ $1.5M
Nov 3, 2023 Nov 7, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 87.5 +95,694 2.48% ✗ $1.1M
Sep 28, 2023 Sep 29, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 87.5 +76,511 2.02% ✗ $1M
Sep 26, 2023 Sep 27, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 85.0 +58,504 1.57% ✗ $700.5K
Sep 22, 2023 Sep 25, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 92.5 +100,740 2.78% ✗ $1.1M
Sep 19, 2023 Sep 20, 2023 Neumora Therapeutics, Inc. 10% Owner Buy 100.0 +1,500,000 70.62% ✗ $25.5M
Oct 24, 2022 Oct 26, 2022 Prime Medicine, Inc. 10% Owner Buy 97.5 +800,000 6.98% ✗ $13.6M
Jun 15, 2015 Jun 17, 2015 Pulmatrix, Inc. Director Buy 97.5 +2,286,456 100.00% ✗ $500.2K