# Leon J. Topalian

> 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 Unknown, unavailable, and unpublished values are never inferred as zero.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:leon-j-topalian |
| Entity type | Person |
| Canonical URL | https://registry.alpha.ac/people/leon-j-topalian |
| Publication | PUBLISHED |
| Verification | corroborated |
| Verification schema | alpha-verification-states-v1 |
| Ownership | unclaimed |
| Published claims | 18 |
| Claims under review | 0 |
| Evidence records | 10 |
| Conflicts | 0 |
| Conflicts in internal review | 1 |
| Observed | 2026-10-16T05:05:19.388923+00:00 |
| Last reviewed | 2026-05-15T21:52:29.608+00:00 |

## Identity

- Legal name: Leon J. Topalian
- Display name: Leon J. Topalian

## Alpha Governance Record

| Field | Value |
| --- | --- |
| Governance Record schema | alpha-governance-record-v2 |
| Ontology | alpha-governance-ontology-v1 |
| Record version | public-0:d751713988987e9331980363e24189ce |
| As of | 2026-10-16T05:05:19.935054+00:00 |
| Completeness | 1 |
| Record Quality | 0.946 |
| 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: Leon J. Topalian seat on PPG Industries, effective 2025-01-01. Effective: 2025-01-01. Detected: 2026-05-15T21:52:29.608+00:00. event_id=alpha:event:transition:b3q9idx52p6f
- DIRECTOR_APPOINTED: Leon J. Topalian seat on Nucor, effective 2020-01-01. Effective: 2020-01-01. Detected: 2026-05-15T21:52:29.608+00:00. event_id=alpha:event:transition:82jtkl16nx1q7

## Scoped resources

- `alpha://person/leon-j-topalian` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record
- `alpha://person/leon-j-topalian/identity` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=identity
- `alpha://person/leon-j-topalian/corporate-structure` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=corporate-structure
- `alpha://person/leon-j-topalian/board` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=board
- `alpha://person/leon-j-topalian/committees` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=committees
- `alpha://person/leon-j-topalian/leadership` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=leadership
- `alpha://person/leon-j-topalian/ownership` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=ownership
- `alpha://person/leon-j-topalian/financials` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=financials
- `alpha://person/leon-j-topalian/capital-structure` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=capital-structure
- `alpha://person/leon-j-topalian/compensation` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=compensation
- `alpha://person/leon-j-topalian/governance` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=governance
- `alpha://person/leon-j-topalian/shareholder-governance` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=shareholder-governance
- `alpha://person/leon-j-topalian/audit` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=audit
- `alpha://person/leon-j-topalian/legal` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=legal
- `alpha://person/leon-j-topalian/risk` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=risk
- `alpha://person/leon-j-topalian/cyber` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=cyber
- `alpha://person/leon-j-topalian/ai-governance` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=ai-governance
- `alpha://person/leon-j-topalian/agents` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=agents
- `alpha://person/leon-j-topalian/ecosystem` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=ecosystem
- `alpha://person/leon-j-topalian/events` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=events
- `alpha://person/leon-j-topalian/relationships` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=relationships
- `alpha://person/leon-j-topalian/assessments` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=assessments
- `alpha://person/leon-j-topalian/evidence` (contract): https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record&section=evidence

## Role modules

- Director

## Attention

- NO_RECORDS_FOUND

## Committee data

- NO_RECORDS_FOUND

## Leadership

- PUBLISHED

## Roles

- Independent Director at PPG Industries. Claim: alpha:claim:person:leon-j-topalian:role:1. Valid from: 2025-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:24ef03b454d7c86f900b394c6cd8e83c66bb209e7aa9226121c1d5e58c925b05.
- Director at Nucor. Claim: alpha:claim:person:leon-j-topalian:role:2. Valid from: 2020-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:1328690e010a5154ff4ada929df22273f556be8e5252b31729fd2b6a627edcac.

## Governance

- PUBLISHED

## Board committees

- PUBLISHED

## AI and ML experience

- AI and ML experience: not identified in the cited filing. Claim: alpha:claim:person:leon-j-topalian:ai_ml_experience:1. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:ca4ad5262c5f5fbb2cd38ac0ae12e1acf011b0cd4dd7a0f9e5b6f3cdf0e17804, alpha:projection-evidence:document:a97ee902cbf5edcb55b697b662045dd9f3b901888b4babcd1a16f730d720e7b7.

## AI expertise

- AI expertise: not identified in the cited filing. Claim: alpha:claim:person:leon-j-topalian:ai_expertise:2. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:2838c024771841c657547a40a21e8f045bb8f45dec40af7f8d16daf7ec52ded6.

## AI governance relevance

- AI governance relevance reported from role and filings. Claim: alpha:claim:person:leon-j-topalian:ai_governance_relevance:3. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:2838c024771841c657547a40a21e8f045bb8f45dec40af7f8d16daf7ec52ded6.

## Board independence

- Not independent (executive director). Claim: alpha:claim:person:leon-j-topalian:board_independence:4. Publication: PUBLISHED. Verification: source_reported. Review: internal_review. Assertion: source_reported. Evidence: alpha:projection-evidence:document:d1c813c06a9d38602eb1e665a69af39523f071a6e50e7489d3274635a2385aba.
- Independent director. Claim: alpha:claim:person:leon-j-topalian:board_independence:5. Publication: PUBLISHED. Verification: source_reported. Review: internal_review. Assertion: source_reported. Evidence: alpha:projection-evidence:document:ba69bcc8628f738574e27bee2b3c16edd629e031075b3d42641f63e72a9ccf63.

## Board membership

- Serves on the board of Nucor Corporation. Claim: alpha:claim:person:leon-j-topalian:board_membership:6. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:d1c813c06a9d38602eb1e665a69af39523f071a6e50e7489d3274635a2385aba, alpha:projection-evidence:9832b3cd600c0f3136452ff9cdd52636e3aef7770ef69c2eb7c7104d7e5fa7af.
- Serves on the board of PPG Industries, Inc.. Claim: alpha:claim:person:leon-j-topalian:board_membership:7. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:ba69bcc8628f738574e27bee2b3c16edd629e031075b3d42641f63e72a9ccf63, alpha:projection-evidence:65be8274d7b2046b4b62c2ff606844959f959590b1cb944ed8af3e25828b39d2.

## Board role

- Board role: Chair. Claim: alpha:claim:person:leon-j-topalian:board_role:8. Valid from: 2026-03-27. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:ca4ad5262c5f5fbb2cd38ac0ae12e1acf011b0cd4dd7a0f9e5b6f3cdf0e17804.
- Board role: Director. Claim: alpha:claim:person:leon-j-topalian:board_role:9. Valid from: 2026-03-05. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:26e0e5f51c2311fa99e6b8fc680c86e8fa567ca3ca3abff32c97cb3fbbfa6a9c.

## Committee assignments

- No committee assignment disclosed in the cited filing. Claim: alpha:claim:person:leon-j-topalian:committee_assignments:10. Valid from: 2026-03-27. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:ca4ad5262c5f5fbb2cd38ac0ae12e1acf011b0cd4dd7a0f9e5b6f3cdf0e17804, alpha:projection-evidence:document:ba69bcc8628f738574e27bee2b3c16edd629e031075b3d42641f63e72a9ccf63.
- Committee assignments: Audit, ESG. Claim: alpha:claim:person:leon-j-topalian:committee_assignments:11. Valid from: 2026-03-05. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:26e0e5f51c2311fa99e6b8fc680c86e8fa567ca3ca3abff32c97cb3fbbfa6a9c.

## Cybersecurity experience

- Cybersecurity experience: not identified in the cited filing. Claim: alpha:claim:person:leon-j-topalian:cybersecurity_experience:12. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:a97ee902cbf5edcb55b697b662045dd9f3b901888b4babcd1a16f730d720e7b7, alpha:projection-evidence:document:ca4ad5262c5f5fbb2cd38ac0ae12e1acf011b0cd4dd7a0f9e5b6f3cdf0e17804.

## Executive company

- Executive at Nucor Corporation. Claim: alpha:claim:person:leon-j-topalian:executive_company:13. Valid from: 2026-02-25. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:ca4ad5262c5f5fbb2cd38ac0ae12e1acf011b0cd4dd7a0f9e5b6f3cdf0e17804, alpha:projection-evidence:document:a97ee902cbf5edcb55b697b662045dd9f3b901888b4babcd1a16f730d720e7b7, alpha:projection-evidence:document:2838c024771841c657547a40a21e8f045bb8f45dec40af7f8d16daf7ec52ded6.

## Executive function

- Enterprise Leadership (CEO). Claim: alpha:claim:person:leon-j-topalian:executive_function:14. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:projection-evidence:document:2838c024771841c657547a40a21e8f045bb8f45dec40af7f8d16daf7ec52ded6.

## Executive title

- Executive title: Chair and Chief Executive Officer. Claim: alpha:claim:person:leon-j-topalian:executive_title:15. Valid from: 2026-02-25. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:ca4ad5262c5f5fbb2cd38ac0ae12e1acf011b0cd4dd7a0f9e5b6f3cdf0e17804, alpha:projection-evidence:document:a97ee902cbf5edcb55b697b662045dd9f3b901888b4babcd1a16f730d720e7b7, alpha:projection-evidence:document:2838c024771841c657547a40a21e8f045bb8f45dec40af7f8d16daf7ec52ded6.

## Technology background

- Technology background: not identified in the cited filing. Claim: alpha:claim:person:leon-j-topalian:technology_background:16. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:projection-evidence:document:a97ee902cbf5edcb55b697b662045dd9f3b901888b4babcd1a16f730d720e7b7, alpha:projection-evidence:document:ca4ad5262c5f5fbb2cd38ac0ae12e1acf011b0cd4dd7a0f9e5b6f3cdf0e17804.

## 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:ca4ad5262c5f5fbb2cd38ac0ae12e1acf011b0cd4dd7a0f9e5b6f3cdf0e17804: [NUE DEF 14A director slate](https://www.sec.gov/Archives/edgar/data/73309/000119312526127739/d21430ddef14a.htm).
- alpha:projection-evidence:document:1328690e010a5154ff4ada929df22273f556be8e5252b31729fd2b6a627edcac: [sec_proxy](https://www.sec.gov/Archives/edgar/data/73309/000119312526127739/d21430ddef14a.htm).
- alpha:projection-evidence:document:ba69bcc8628f738574e27bee2b3c16edd629e031075b3d42641f63e72a9ccf63: [PPG Industries, Inc. director board source](https://www.sec.gov/Archives/edgar/data/79879/000007987926000088/ppg-20260304.htm).
- alpha:projection-evidence:document:26e0e5f51c2311fa99e6b8fc680c86e8fa567ca3ca3abff32c97cb3fbbfa6a9c: [PPG DEF 14A director slate](https://www.sec.gov/Archives/edgar/data/79879/000007987926000088/ppg-20260304.htm).
- alpha:projection-evidence:document:24ef03b454d7c86f900b394c6cd8e83c66bb209e7aa9226121c1d5e58c925b05: [sec_proxy](https://www.sec.gov/Archives/edgar/data/79879/000007987926000088/ppg-20260304.htm).
- alpha:projection-evidence:document:a97ee902cbf5edcb55b697b662045dd9f3b901888b4babcd1a16f730d720e7b7: [NUE 10-K executive officers](https://www.sec.gov/Archives/edgar/data/73309/000119312526071575/nue-20251231.htm).
- alpha:projection-evidence:document:d1c813c06a9d38602eb1e665a69af39523f071a6e50e7489d3274635a2385aba: [Nucor Corporation director board source](https://www.sec.gov/Archives/edgar/data/0000073309/000119312525060939/d840599ddef14a.htm).
- alpha:projection-evidence:document:2838c024771841c657547a40a21e8f045bb8f45dec40af7f8d16daf7ec52ded6: NUE executive roster source.
- alpha:projection-evidence:65be8274d7b2046b4b62c2ff606844959f959590b1cb944ed8af3e25828b39d2: [public_source](https://www.sec.gov/Archives/edgar/data/79879/000007987926000088/ppg-20260304.htm).
- alpha:projection-evidence:9832b3cd600c0f3136452ff9cdd52636e3aef7770ef69c2eb7c7104d7e5fa7af: [public_source](https://www.sec.gov/Archives/edgar/data/73309/000119312526127739/d21430ddef14a.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/leon-j-topalian)
- [Public Markdown](https://registry.alpha.ac/people/leon-j-topalian.md)
- [Public JSON](https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=record)
- [JSON-LD](https://registry.alpha.ac/api/public/profiles/leon-j-topalian?format=jsonld)
- MCP resource: `alpha://people/leon-j-topalian` 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.