Leon J. Topalian

Alpha governed public record. Unknown, unavailable, and unpublished values are never inferred as zero.

Record

Field	Value
Representation	alpha-profile-markdown-v3
Protocol	Alpha Governance Facts Protocol 0.1
Schema	alpha.governance.entity.public.v1
Record version	public-0
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	2026-09-24T19:07:30.805269+00:00
Last reviewed	2026-05-15T21:52:29.608+00:00

Identity

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

Leadership

PUBLISHED

Roles

Independent Director at PPG Industries. Valid from: 2025-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:5.
Director at Nucor. Valid from: 2020-01-01. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:2.

Governance

PUBLISHED

Board committees

PUBLISHED

AI and ML experience

AI and ML experience: not identified in the cited filing. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:1, alpha:evidence:person:leon-j-topalian:6.

AI expertise

AI expertise: not identified in the cited filing. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:8.

AI governance relevance

AI governance relevance reported from role and filings. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:8.

Board independence

Not independent (executive director). Publication: PUBLISHED. Verification: source_reported. Review: internal_review. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:7.
Independent director. Publication: PUBLISHED. Verification: source_reported. Review: internal_review. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:3.

Board membership

Serves on the board of Nucor Corporation. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:7, alpha:evidence:person:leon-j-topalian:10.
Serves on the board of PPG Industries, Inc.. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:3, alpha:evidence:person:leon-j-topalian:9.

Board role

Board role: Chair. Valid from: 2026-03-27. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:1.
Board role: Director. Valid from: 2026-03-05. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:4.

Committee assignments

No committee assignment disclosed in the cited filing. Valid from: 2026-03-27. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:1, alpha:evidence:person:leon-j-topalian:3.
Committee assignments: Audit, ESG. Valid from: 2026-03-05. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:4.

Cybersecurity experience

Cybersecurity experience: not identified in the cited filing. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:6, alpha:evidence:person:leon-j-topalian:1.

Executive company

Executive at Nucor Corporation. Valid from: 2026-02-25. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:1, alpha:evidence:person:leon-j-topalian:6, alpha:evidence:person:leon-j-topalian:8.

Executive function

Enterprise Leadership (CEO). Publication: PUBLISHED. Verification: source_reported. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:8.

Executive title

Executive title: Chair and Chief Executive Officer. Valid from: 2026-02-25. Valid to: NOT_ASSERTED. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:1, alpha:evidence:person:leon-j-topalian:6, alpha:evidence:person:leon-j-topalian:8.

Technology background

Technology background: not identified in the cited filing. Publication: PUBLISHED. Verification: corroborated. Assertion: source_reported. Evidence: alpha:evidence:person:leon-j-topalian:6, alpha:evidence:person:leon-j-topalian:1.

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:evidence:person:leon-j-topalian:1: NUE DEF 14A director slate.
alpha:evidence:person:leon-j-topalian:2: sec_proxy.
alpha:evidence:person:leon-j-topalian:3: PPG Industries, Inc. director board source.
alpha:evidence:person:leon-j-topalian:4: PPG DEF 14A director slate.
alpha:evidence:person:leon-j-topalian:5: sec_proxy.
alpha:evidence:person:leon-j-topalian:6: NUE 10-K executive officers.
alpha:evidence:person:leon-j-topalian:7: Nucor Corporation director board source.
alpha:evidence:person:leon-j-topalian:8: NUE executive roster source.
alpha:evidence:person:leon-j-topalian:9: public_source.
alpha:evidence:person:leon-j-topalian:10: public_source.

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
Public Markdown
Public JSON
JSON-LD
MCP resource: alpha://people/leon-j-topalian at https://mcp.alpha.ac/mcp

Connected governance records

Structured intelligence is not currently available. Existing published profile evidence remains accessible.