# Stephen C. Mills > 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 Unknown, unavailable, and unpublished values are never inferred as zero.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-0:d751713988987e9331980363e24189ce | | Governance record representation | alpha-governance-record-v2 | | Canonical entity | alpha:person:stephen-c-mills | | Entity type | Person | | Canonical URL | https://registry.alpha.ac/people/stephen-c-mills | | Publication | PUBLISHED | | Verification | corroborated | | Verification schema | alpha-verification-states-v1 | | Ownership | unclaimed | | Published claims | 12 | | Claims under review | 0 | | Evidence records | 8 | | Conflicts | 0 | | Conflicts in internal review | 0 | | Observed | 2026-10-16T14:29:39.676645+00:00 | | Last reviewed | 2026-05-15T20:57:09.817+00:00 | ## Identity - Legal name: Stephen C. Mills - Display name: Stephen C. Mills ## Alpha Governance Record | Field | Value | | --- | --- | | Governance Record schema | alpha-governance-record-v2 | | Ontology | alpha-governance-ontology-v1 | | Record version | public-0:d751713988987e9331980363e24189ce | | As of | 2026-10-16T14:29:40.028486+00:00 | | Completeness | 1 | | Record Quality | 0.92 | | Directors | 0 | | Committees | 0 | | Governance events | 2 | | Entity class | person | ## Section coverage | Section | State | | --- | --- | | identity | PUBLISHED | | corporate_structure | NOT_APPLICABLE | | board | NOT_APPLICABLE | | committees | NOT_APPLICABLE | | leadership | NOT_APPLICABLE | | ownership | NOT_APPLICABLE | | financials | NOT_APPLICABLE | | capital_structure | NOT_APPLICABLE | | compensation | NOT_APPLICABLE | | governance | NOT_APPLICABLE | | shareholder_governance | NOT_APPLICABLE | | audit | NOT_APPLICABLE | | legal | NOT_APPLICABLE | | risk | NOT_APPLICABLE | | cyber | PUBLISHED | | ai_governance | PUBLISHED | | agent_governance | NOT_APPLICABLE | | markets_external | NOT_APPLICABLE | | events | PUBLISHED | | relationships | PUBLISHED | | assessments | PUBLISHED | | evidence | PUBLISHED | ## Governance events - DIRECTOR_APPOINTED: Stephen C. Mills seat on AMC Global Media Inc., effective 2024-01-01. Effective: 2024-01-01. Detected: 2026-05-15T20:57:09.817+00:00. event_id=alpha:event:transition:16yfld5117ls8v - DIRECTOR_APPOINTED: Stephen C. Mills seat on SELECTIVE INSURANCE GROUP INC, effective 2020-01-01. Effective: 2020-01-01. Detected: 2026-05-15T20:57:09.817+00:00. event_id=alpha:event:transition:13czxlb1h15b6x ## Scoped resources - `alpha://person/stephen-c-mills` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record - `alpha://person/stephen-c-mills/identity` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=identity - `alpha://person/stephen-c-mills/corporate-structure` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=corporate-structure - `alpha://person/stephen-c-mills/board` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=board - `alpha://person/stephen-c-mills/committees` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=committees - `alpha://person/stephen-c-mills/leadership` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=leadership - `alpha://person/stephen-c-mills/ownership` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=ownership - `alpha://person/stephen-c-mills/financials` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=financials - `alpha://person/stephen-c-mills/capital-structure` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=capital-structure - `alpha://person/stephen-c-mills/compensation` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=compensation - `alpha://person/stephen-c-mills/governance` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=governance - `alpha://person/stephen-c-mills/shareholder-governance` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=shareholder-governance - `alpha://person/stephen-c-mills/audit` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=audit - `alpha://person/stephen-c-mills/legal` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=legal - `alpha://person/stephen-c-mills/risk` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=risk - `alpha://person/stephen-c-mills/cyber` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=cyber - `alpha://person/stephen-c-mills/ai-governance` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=ai-governance - `alpha://person/stephen-c-mills/agents` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=agents - `alpha://person/stephen-c-mills/ecosystem` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=ecosystem - `alpha://person/stephen-c-mills/events` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=events - `alpha://person/stephen-c-mills/relationships` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=relationships - `alpha://person/stephen-c-mills/assessments` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=assessments - `alpha://person/stephen-c-mills/evidence` (contract): https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record§ion=evidence ## Role modules - Director ## Attention - NO_RECORDS_FOUND ## Committee data - NO_RECORDS_FOUND ## Leadership - PUBLISHED ## Roles - Director at AMC Global Media Inc.. Claim: alpha:claim:person:stephen-c-mills:role:1. Valid from: 2024-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:8723ff8cd2eb187ce55f58fc5922ba9c7c0a0131a6228e8e6d354dd85bd726aa. - Director at SELECTIVE INSURANCE GROUP INC. Claim: alpha:claim:person:stephen-c-mills:role:2. Valid from: 2020-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:275fc8bebf3ec3694c35bb79ebd0e2402b0f5055084a6645d6255cedf32ad474. - Director at Madison Square Garden Sports Corp.. Claim: alpha:claim:person:stephen-c-mills:role:3. Valid from: NOT_ASSERTED. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:706e8f616ba1d5391ccf596b83c3f2a4ac5ee5b7f2ae7107aea6ca490ea8a2f9. ## Governance - PUBLISHED ## Board committees - PUBLISHED ## AI and ML experience - AI and ML experience: not identified in the cited filing. Claim: alpha:claim:person:stephen-c-mills:ai_ml_experience:1. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:f6ca74d2f7d78d4fcd38ab578a9a61df9484045038750139dba5f81dce147fc4. ## Board membership - Serves on the board of AMC Global Media Inc.. Claim: alpha:claim:person:stephen-c-mills:board_membership:2. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:ca7a941b395883276206da61825c2dfc113a53bc048b8e1119f6b63749db9d4a. - Serves on the board of Madison Square Garden Sports Corp.. Claim: alpha:claim:person:stephen-c-mills:board_membership:3. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:86ccff6270827073c7ef29feac46a01573eb3a047ebe1fa3115f35b5eeae27a3. - Serves on the board of SELECTIVE INSURANCE GROUP INC. Claim: alpha:claim:person:stephen-c-mills:board_membership:4. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:c52918d24d6a316434f78b169530dfd5cd05d99164370f554d8d535a5fb182e0. ## Board role - Board role: Director. Claim: alpha:claim:person:stephen-c-mills:board_role:5. Valid from: 2025-04-25. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:d1e5820b8cb5612503d3d1f58741fb6725e3e6be5ccba9741a216dab2576f05b, alpha:projection-evidence:document:f6ca74d2f7d78d4fcd38ab578a9a61df9484045038750139dba5f81dce147fc4. ## Committee assignments - No committee assignment disclosed in the cited filing. Claim: alpha:claim:person:stephen-c-mills:committee_assignments:6. Valid from: 2025-04-25. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:f6ca74d2f7d78d4fcd38ab578a9a61df9484045038750139dba5f81dce147fc4. - Committee assignments: Compensation and Human Capital, Nominating/Governance, Finance and Investments, Executive. Claim: alpha:claim:person:stephen-c-mills:committee_assignments:7. Valid from: 2026-03-26. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:d1e5820b8cb5612503d3d1f58741fb6725e3e6be5ccba9741a216dab2576f05b. ## Cybersecurity experience - Cybersecurity experience: not identified in the cited filing. Claim: alpha:claim:person:stephen-c-mills:cybersecurity_experience:8. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:f6ca74d2f7d78d4fcd38ab578a9a61df9484045038750139dba5f81dce147fc4. ## Technology background - Technology background: not identified in the cited filing. Claim: alpha:claim:person:stephen-c-mills:technology_background:9. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:f6ca74d2f7d78d4fcd38ab578a9a61df9484045038750139dba5f81dce147fc4. ## Coverage states | Field | Value | | --- | --- | | Identity | PUBLISHED | | Business | NOT_APPLICABLE | | Leadership | PUBLISHED | | Board and committees | PUBLISHED | | Governance | PUBLISHED | | Financials | NOT_APPLICABLE | | Workforce | NOT_APPLICABLE | | Ownership | NOT_APPLICABLE | | Ratings | NOT_PUBLISHED | | Market and index context | NOT_APPLICABLE | ## Public sources - alpha:projection-evidence:document:d1e5820b8cb5612503d3d1f58741fb6725e3e6be5ccba9741a216dab2576f05b: [SIGI DEF 14A director slate](https://www.sec.gov/Archives/edgar/data/230557/000110465926034953/tm261551d2_def14a.htm). - alpha:projection-evidence:document:275fc8bebf3ec3694c35bb79ebd0e2402b0f5055084a6645d6255cedf32ad474: [sec_proxy](https://www.sec.gov/Archives/edgar/data/230557/000110465926034953/tm261551d2_def14a.htm). - alpha:projection-evidence:document:706e8f616ba1d5391ccf596b83c3f2a4ac5ee5b7f2ae7107aea6ca490ea8a2f9: [sec_proxy](https://www.sec.gov/Archives/edgar/data/1636519/000162828025046103/msgs-20251023.htm). - alpha:projection-evidence:document:f6ca74d2f7d78d4fcd38ab578a9a61df9484045038750139dba5f81dce147fc4: [AMCX DEF 14A director slate](https://www.sec.gov/Archives/edgar/data/1514991/000119312525095068/d866673ddef14a.htm). - alpha:projection-evidence:document:8723ff8cd2eb187ce55f58fc5922ba9c7c0a0131a6228e8e6d354dd85bd726aa: [sec_proxy](https://www.sec.gov/Archives/edgar/data/1514991/000119312525095068/d866673ddef14a.htm). - alpha:projection-evidence:ca7a941b395883276206da61825c2dfc113a53bc048b8e1119f6b63749db9d4a: [public_source](https://www.sec.gov/Archives/edgar/data/1514991/000119312525095068/d866673ddef14a.htm). - alpha:projection-evidence:c52918d24d6a316434f78b169530dfd5cd05d99164370f554d8d535a5fb182e0: [public_source](https://www.sec.gov/Archives/edgar/data/230557/000110465926034953/tm261551d2_def14a.htm). - alpha:projection-evidence:86ccff6270827073c7ef29feac46a01573eb3a047ebe1fa3115f35b5eeae27a3: [public_source](https://www.sec.gov/Archives/edgar/data/1636519/000162828025046103/msgs-20251023.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 - Only permissioned public claims and evidence are included. - Absence of a claim is not evidence that the underlying fact is false. - Public retrieval does not grant model-training or redistribution rights. - Private relationships and Council activity are excluded. ## Alternate representations - [Canonical profile](https://registry.alpha.ac/people/stephen-c-mills) - [Public Markdown](https://registry.alpha.ac/people/stephen-c-mills.md) - [Public JSON](https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=record) - [JSON-LD](https://registry.alpha.ac/api/public/profiles/stephen-c-mills?format=jsonld) - MCP resource: `alpha://people/stephen-c-mills` 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.