Company
SION · CIK 0002036042
Sale of 3,415,011 shares at $6.32 per share.
Reporting Persons RA CAPITAL MANAGEMENT, L.P. · RA Capital Healthcare Fund LP · RA Capital Nexus Fund, L.P. · RA Capital Nexus Fund III, L.P. · Kolchinsky Peter · Shah Rajeev M. · Transaction Code S
Traded Sep 17, 2026 · Disclosed Sep 21, 2026
Source: SEC Form 4 · 0001231919-26-001201 · filed 2026-09-21 · View filing →
Sale of 33,800 shares at $7.46 per share.
Reporting Persons RA CAPITAL MANAGEMENT, L.P. · RA Capital Healthcare Fund LP · RA Capital Nexus Fund, L.P. · RA Capital Nexus Fund III, L.P. · Kolchinsky Peter · Shah Rajeev M. · Transaction Code S
Traded Sep 17, 2026 · Disclosed Sep 21, 2026
Source: SEC Form 4 · 0001231919-26-001201 · filed 2026-09-21 · View filing →
Acquisition (code A) of 109,025 shares at $0.0 per share.
Reporting Person Cloonan Michael · Officer Title President & CEO · Transaction Code A
Traded Sep 17, 2026 · Disclosed Sep 18, 2026
Source: SEC Form 4 · 0001704336-26-000005 · filed 2026-09-18 · View filing →
Acquisition (code A) of 109,025 shares at $0.0 per share.
Reporting Person Cloonan Michael · Officer Title President & CEO · Transaction Code A
Traded Sep 17, 2026 · Disclosed Sep 18, 2026
Source: SEC Form 4 · 0001704336-26-000005 · filed 2026-09-18 · View filing →
Acquisition (code A) of 47,269 shares at $0.0 per share.
Reporting Person Ridloff Elena · Officer Title CFO and CBO · Transaction Code A
Traded Sep 17, 2026 · Disclosed Sep 18, 2026
Source: SEC Form 4 · 0001772518-26-000004 · filed 2026-09-18 · View filing →
Acquisition (code A) of 47,268 shares at $0.0 per share.
Reporting Person Ridloff Elena · Officer Title CFO and CBO · Transaction Code A
Traded Sep 17, 2026 · Disclosed Sep 18, 2026
Source: SEC Form 4 · 0001772518-26-000004 · filed 2026-09-18 · View filing →
Acquisition (code A) of 50,000 shares at $0.0 per share.
Reporting Person McKee Charlotte · Officer Title CMO and Head of R&D · Transaction Code A
Traded Sep 17, 2026 · Disclosed Sep 18, 2026
Source: SEC Form 4 · 0002046433-26-000005 · filed 2026-09-18 · View filing →
Acquisition (code A) of 50,000 shares at $0.0 per share.
Reporting Person McKee Charlotte · Officer Title CMO and Head of R&D · Transaction Code A
Traded Sep 17, 2026 · Disclosed Sep 18, 2026
Source: SEC Form 4 · 0002046433-26-000005 · filed 2026-09-18 · View filing →
Acquisition (code A) of 28,133 shares at $0.0 per share.
Reporting Person Fitzpatrick Jennifer · Officer Title CLO and Head of Program Mgmt. · Transaction Code A
Traded Sep 17, 2026 · Disclosed Sep 18, 2026
Source: SEC Form 4 · 0002061851-26-000009 · filed 2026-09-18 · View filing →
Acquisition (code A) of 28,132 shares at $0.0 per share.
Reporting Person Fitzpatrick Jennifer · Officer Title CLO and Head of Program Mgmt. · Transaction Code A
Traded Sep 17, 2026 · Disclosed Sep 18, 2026
Source: SEC Form 4 · 0002061851-26-000009 · filed 2026-09-18 · View filing →