# Sionna Therapeutics, Inc. > Alpha governed public record. Unknown, unavailable, and unpublished values are never inferred as zero. ## Record | Field | Value | | --- | --- | | Representation | alpha-profile-markdown-v4 | | Protocol | Alpha Governance Facts Protocol 0.1 | | Schema | alpha.governance.entity.public.v1 | | Record version | public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce | | Governance record representation | alpha-governance-record-v2 | | Canonical entity | alpha:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e | | Entity type | Company | | Canonical URL | https://registry.alpha.ac/companies/sionna-therapeutics-inc | | Publication | PUBLISHED | | Verification | source_reported | | Verification schema | alpha-verification-states-v1 | | Ownership | unclaimed | | Published claims | 35 | | Claims under review | 1 | | Evidence records | 6 | | Conflicts | 0 | | Conflicts in internal review | 0 | | Observed | 2026-10-07T06:08:14.97766+00:00 | | Last reviewed | 2026-10-07T06:08:14.97766+00:00 | ## Identity - Legal name: Sionna Therapeutics, Inc. - Display name: Sionna Therapeutics, Inc. ## Alpha Governance Record | Field | Value | | --- | --- | | Governance Record schema | alpha-governance-record-v2 | | Ontology | alpha-governance-ontology-v1 | | Record version | public-1:d751713988987e9331980363e24189ce:ro-d751713988987e9331980363e24189ce | | As of | 2026-10-08T01:42:12.444123+00:00 | | Completeness | 0.409 | | Record Quality | 0.84 | | Directors | 23 | | Committees | 1 | | Governance events | 16 | | Entity class | public_company | ## Section coverage | Section | State | | --- | --- | | identity | PUBLISHED | | corporate_structure | NOT_REVIEWED | | board | PUBLISHED | | committees | PUBLISHED | | leadership | PUBLISHED | | ownership | NOT_REVIEWED | | financials | NOT_REVIEWED | | capital_structure | PUBLISHED | | compensation | NOT_REVIEWED | | governance | NOT_REVIEWED | | shareholder_governance | NOT_REVIEWED | | audit | NOT_REVIEWED | | legal | NOT_REVIEWED | | risk | NOT_REVIEWED | | cyber | NOT_REVIEWED | | ai_governance | NOT_REVIEWED | | agent_governance | RESTRICTED | | markets_external | NOT_REVIEWED | | events | PUBLISHED | | relationships | PUBLISHED | | assessments | PUBLISHED | | evidence | PUBLISHED | ## Board - Bruce Booth: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2020-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:6 - Caroline Stark Beer: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2025-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:8 - Charlotte McKee: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2021-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:9 - Elena Ridloff: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2021-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:10 - H. Edward Fleming, Jr: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2024-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:11 - Jennifer Fitzpatrick: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2025-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:13 - Joanne Louise Viney: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2025-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:14 - Laurie Stelzer: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2024-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:17 - Lucian Iancovici: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2019-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:19 - Marcella Kuhlman Rudy: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2025-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:22 - Michael Cloonan: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2021-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:23 - Paul Clancy: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2022-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:25 - Peter A. Thompson: Director. Status: current. Independent: NOT_PUBLISHED. Since: 2022-01-01. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:26 - Bruce Booth, D.Phil.: Director. Status: unknown. Independent: true. Since: NOT_PUBLISHED. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:7 - H. Edward Fleming, Jr., M.D.: Director. Status: unknown. Independent: true. Since: NOT_PUBLISHED. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:12 - Joanne Louise Viney, Ph.D.: Director. Status: unknown. Independent: true. Since: NOT_PUBLISHED. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:15 - Joshua Resnick, M.D., M.B.A.: Director. Status: unknown. Independent: true. Since: NOT_PUBLISHED. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:16 - Laurie Stelzer, M.B.A.: Director. Status: unknown. Independent: true. Since: NOT_PUBLISHED. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:18 - Lucian Iancovici, M.D.: Director. Status: unknown. Independent: true. Since: NOT_PUBLISHED. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:20 - Marcella Kuhlman Ruddy, M.D.: Director. Status: unknown. Independent: true. Since: NOT_PUBLISHED. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:21 - Michael Cloonan, M.B.A.: President, Chief Executive Officer, and Director. Status: unknown. Independent: false. Since: NOT_PUBLISHED. Committees: Chief Executive Officer, and Director (member). claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:24 - Paul Clancy, M.B.A.: Chairperson of the Board. Status: unknown. Independent: true. Since: NOT_PUBLISHED. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:5 - Peter A. Thompson, M.D.: Director. Status: unknown. Independent: true. Since: NOT_PUBLISHED. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:27 ## Committees - Chief Executive Officer, and Director (executive). Chair: NOT_PUBLISHED. Members: Michael Cloonan, M.B.A. (member, unknown). committee_id=alpha:committee:sionna-therapeutics-inc:chief-executive-officer-and-director ## Executive leadership - Caroline Stark Beer: Chief Business Officer. Status: current. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:28 - Elena Ridloff: Chief Financial Officer [CFO]. Status: current. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:31 - Michael Cloonan: President, Chief Executive Officer, and Director [CEO]. Status: current. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:34 - Caroline Stark Beer, M.B.A.: Chief Business Officer. Status: unknown. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:29 - Charlotte McKee, M.D.: Chief Medical Officer. Status: unknown. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:30 - Elena Ridloff, C.F.A.: Chief Financial Officer [CFO]. Status: unknown. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:32 - Jennifer Fitzpatrick, J.D.: Chief Legal Officer [GC]. Status: unknown. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:33 - Michael Cloonan, M.B.A.: President and Chief Executive Officer [CEO]. Status: unknown. claim_id=alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:35 ## Governance events - EXECUTIVE_APPOINTED: Caroline Stark Beer executive of Sionna Therapeutics, Inc., effective 2026-04-27. Effective: 2026-04-27. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:executive_appointed:bwsd9m - CFO_CHANGED: Elena Ridloff executive of Sionna Therapeutics, Inc., effective 2026-04-27. Effective: 2026-04-27. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:cfo_changed:np8o3w - CEO_CHANGED: Michael Cloonan executive of Sionna Therapeutics, Inc., effective 2026-04-27. Effective: 2026-04-27. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:ceo_changed:1xl57sq - DIRECTOR_APPOINTED: Caroline Stark Beer seat on Sionna Therapeutics, Inc., effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:m1dc4z - DIRECTOR_APPOINTED: Jennifer Fitzpatrick seat on Sionna Therapeutics, Inc., effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:1ady2em - DIRECTOR_APPOINTED: Joanne Louise Viney seat on Sionna Therapeutics, Inc., effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:14in9nv - DIRECTOR_APPOINTED: Marcella Kuhlman Rudy seat on Sionna Therapeutics, Inc., effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:1n72yiq - DIRECTOR_APPOINTED: H. Edward Fleming, Jr seat on Sionna Therapeutics, Inc., effective 2024-01-01. Effective: 2024-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:yjvbtw - DIRECTOR_APPOINTED: Laurie Stelzer seat on Sionna Therapeutics, Inc., effective 2024-01-01. Effective: 2024-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:17gsn6s - DIRECTOR_APPOINTED: Paul Clancy seat on Sionna Therapeutics, Inc., effective 2022-01-01. Effective: 2022-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:j6e5lw - DIRECTOR_APPOINTED: Peter A. Thompson seat on Sionna Therapeutics, Inc., effective 2022-01-01. Effective: 2022-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:1311bcr - DIRECTOR_APPOINTED: Charlotte McKee seat on Sionna Therapeutics, Inc., effective 2021-01-01. Effective: 2021-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:1ckrxky - DIRECTOR_APPOINTED: Elena Ridloff seat on Sionna Therapeutics, Inc., effective 2021-01-01. Effective: 2021-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:1vmc4so - DIRECTOR_APPOINTED: Michael Cloonan seat on Sionna Therapeutics, Inc., effective 2021-01-01. Effective: 2021-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:1hqlsam - DIRECTOR_APPOINTED: Bruce Booth seat on Sionna Therapeutics, Inc., effective 2020-01-01. Effective: 2020-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:k4m6pk - DIRECTOR_APPOINTED: Lucian Iancovici seat on Sionna Therapeutics, Inc., effective 2019-01-01. Effective: 2019-01-01. Detected: 2026-10-07T06:08:14.97766+00:00. event_id=alpha:event:director_appointed:doup08 ## Scoped resources - `alpha://company/sionna-therapeutics-inc` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record - `alpha://company/sionna-therapeutics-inc/identity` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=identity - `alpha://company/sionna-therapeutics-inc/corporate-structure` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=corporate-structure - `alpha://company/sionna-therapeutics-inc/board` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=board - `alpha://company/sionna-therapeutics-inc/committees` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=committees - `alpha://company/sionna-therapeutics-inc/leadership` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=leadership - `alpha://company/sionna-therapeutics-inc/ownership` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=ownership - `alpha://company/sionna-therapeutics-inc/financials` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=financials - `alpha://company/sionna-therapeutics-inc/capital-structure` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=capital-structure - `alpha://company/sionna-therapeutics-inc/compensation` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=compensation - `alpha://company/sionna-therapeutics-inc/governance` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=governance - `alpha://company/sionna-therapeutics-inc/shareholder-governance` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=shareholder-governance - `alpha://company/sionna-therapeutics-inc/audit` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=audit - `alpha://company/sionna-therapeutics-inc/legal` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=legal - `alpha://company/sionna-therapeutics-inc/risk` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=risk - `alpha://company/sionna-therapeutics-inc/cyber` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=cyber - `alpha://company/sionna-therapeutics-inc/ai-governance` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=ai-governance - `alpha://company/sionna-therapeutics-inc/agents` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=agents - `alpha://company/sionna-therapeutics-inc/ecosystem` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=ecosystem - `alpha://company/sionna-therapeutics-inc/events` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=events - `alpha://company/sionna-therapeutics-inc/relationships` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=relationships - `alpha://company/sionna-therapeutics-inc/assessments` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=assessments - `alpha://company/sionna-therapeutics-inc/evidence` (contract): https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record§ion=evidence ## Role modules - NOT_ASSERTED ## Attention - NO_RECORDS_FOUND ## Committee data - NO_RECORDS_FOUND ## Leadership - Paul Clancy, M.B.A.: Chairperson of the Board. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:5. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Bruce Booth: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:6. Valid from: 2020-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Bruce Booth, D.Phil.: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:7. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Caroline Stark Beer: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:8. Valid from: 2025-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Charlotte McKee: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:9. Valid from: 2021-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Elena Ridloff: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:10. Valid from: 2021-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - H. Edward Fleming, Jr: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:11. Valid from: 2024-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - H. Edward Fleming, Jr., M.D.: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:12. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Jennifer Fitzpatrick: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:13. Valid from: 2025-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Joanne Louise Viney: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:14. Valid from: 2025-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Joanne Louise Viney, Ph.D.: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:15. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Joshua Resnick, M.D., M.B.A.: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:16. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Laurie Stelzer: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:17. Valid from: 2024-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Laurie Stelzer, M.B.A.: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:18. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Lucian Iancovici: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:19. Valid from: 2019-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Lucian Iancovici, M.D.: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:20. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Marcella Kuhlman Ruddy, M.D.: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:21. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Marcella Kuhlman Rudy: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:22. Valid from: 2025-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Michael Cloonan: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:23. Valid from: 2021-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Michael Cloonan, M.B.A.: President, Chief Executive Officer, and Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:24. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Paul Clancy: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:25. Valid from: 2022-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Peter A. Thompson: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:26. Valid from: 2022-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9. - Peter A. Thompson, M.D.: Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:27. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Caroline Stark Beer: Chief Business Officer. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:28. Valid from: 2026-04-27. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:788311a8b454a7278156fff6417db5c005a07b8a9159e0374820ab70bcd2fc68. - Caroline Stark Beer, M.B.A.: Chief Business Officer. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:29. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Charlotte McKee, M.D.: Chief Medical Officer. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:30. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Elena Ridloff: Chief Financial Officer. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:31. Valid from: 2026-04-27. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:44b7171c840aa601693ca5995aa3cac810a6b1a69df875e2d73b036d38cf9741. - Elena Ridloff, C.F.A.: Chief Financial Officer. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:32. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Jennifer Fitzpatrick, J.D.: Chief Legal Officer. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:33. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. - Michael Cloonan: President, Chief Executive Officer, and Director. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:34. Valid from: 2026-04-27. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:032d80dafc33ec3ddb61192c28144b62fcd4ae730b4d3681103fe96d4a90a97a. - Michael Cloonan, M.B.A.: President and Chief Executive Officer. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:leadership_role:35. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1. ## Roles - PUBLISHED ## Governance - NOT_ASSERTED ## Board committees - PUBLISHED ## Financials - NOT_ASSERTED ## Workforce - NOT_ASSERTED ## Market and index context - PUBLISHED ## Legal Name - Sionna Therapeutics, Inc.. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:legal_name:1. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:45f12285413d80fbff16cd2804d5918dd389431c7034c29528d84297a132cdb3. ## Entity Status - Public listing published. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:entity_status:3. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:45f12285413d80fbff16cd2804d5918dd389431c7034c29528d84297a132cdb3. ## Published Fact - US. Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:published_fact:4. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:45f12285413d80fbff16cd2804d5918dd389431c7034c29528d84297a132cdb3. ## Security Listing - SION (NASDAQ). Claim: alpha:claim:company:448aacf0-d6c6-4113-b91b-21dbfa3f8b7e:security_listing:36. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:45f12285413d80fbff16cd2804d5918dd389431c7034c29528d84297a132cdb3. ## Coverage states | Field | Value | | --- | --- | | Identity | PUBLISHED | | Business | PUBLISHED | | Leadership | PUBLISHED | | Board and committees | PUBLISHED | | Governance | NOT_ASSERTED | | Financials | NOT_ASSERTED | | Workforce | NOT_ASSERTED | | Ownership | NOT_ASSERTED | | Ratings | NOT_PUBLISHED | | Market and index context | PUBLISHED | ## Public sources - alpha:projection-evidence:45f12285413d80fbff16cd2804d5918dd389431c7034c29528d84297a132cdb3: [Alpha canonical company public projection](https://www.alpha.ac/api/public/companies/sionna-therapeutics-inc). - alpha:projection-evidence:document:b8291a543f0508884a54905f2c0add22fe91de38476d02fe197111ed7b82e8f1: [SEC DEF 14A 0001628280-26-027489](https://www.sec.gov/Archives/edgar/data/2036042/000162828026027489/sion-20260427.htm). - alpha:projection-evidence:document:3c1031bfa994e21cbb1dcb64814835a814660be317a0dd1a7144771fb85f0fb9: [DEF 14A sion-20260427.htm](https://www.sec.gov/Archives/edgar/data/2036042/000162828026027489/sion-20260427.htm). - alpha:projection-evidence:document:788311a8b454a7278156fff6417db5c005a07b8a9159e0374820ab70bcd2fc68: [SION DEF 14A executive officers](https://www.sec.gov/Archives/edgar/data/2036042/000162828026027489/sion-20260427.htm). - alpha:projection-evidence:document:44b7171c840aa601693ca5995aa3cac810a6b1a69df875e2d73b036d38cf9741: [SION DEF 14A executive officers](https://www.sec.gov/Archives/edgar/data/2036042/000162828026027489/sion-20260427.htm). - alpha:projection-evidence:document:032d80dafc33ec3ddb61192c28144b62fcd4ae730b4d3681103fe96d4a90a97a: [SION DEF 14A executive officers](https://www.sec.gov/Archives/edgar/data/2036042/000162828026027489/sion-20260427.htm). ## Rights | Field | Value | | --- | --- | | public_retrieval | allowed | | agent_retrieval | allowed | | redistribution | not_granted | | model_training | not_granted | | commercial_use | not_specified | | relationship_pathfinding | not_granted | | direct_contact | not_granted | ## Limitations - Absence of a leadership role, committee, or disclosure is not evidence that it does not exist. - Only explicitly published canonical company identity and current confirmed public roles are included. - Absence of a board, committee, executive, listing, or claim is not evidence that it does not exist. - Public retrieval does not grant redistribution, model-training, direct-contact, or relationship-pathfinding rights. - This Company Profile is an identity and evidence record, not an Alpha rating. ## Alternate representations - [Canonical profile](https://registry.alpha.ac/companies/sionna-therapeutics-inc) - [Public Markdown](https://registry.alpha.ac/companies/sionna-therapeutics-inc.md) - [Public JSON](https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=record) - [JSON-LD](https://registry.alpha.ac/api/public/companies/sionna-therapeutics-inc?format=jsonld) - MCP resource: `alpha://companies/sionna-therapeutics-inc` at https://mcp.alpha.ac/mcp ## Connected governance records Only explicitly published, rights-cleared records. Missing records do not establish absence, safety, or complete coverage. ## Critical-risk oversight Snapshot as of 2026-10-08T01:42:12.439633+00:00; recorded 2026-10-08T01:42:12.439633+00:00. Every published assignment for this snapshot is listed. Only explicitly reviewed, rights-cleared assignments in effect on the as-of date, in the company's own wording. An assignment shows where oversight is placed, not whether it is effective. Missing records do not establish absence.