Person profile

Public information reviewed

Timothy W. Byrne

Role

President and Chief Executive Officer at UNITED STATES LIME & MINERALS INC (NASDAQ: USLM)

Board role

President and Chief Executive Officer and Director · UNITED STATES LIME & MINERALS INC (NASDAQ: USLM)

UNITED STATES LIME & MINERALS INC (NASDAQ: USLM)

President and Chief Executive Officer and Director · Current mandate

Executive
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Reports & analysisAlpha Eval
Public sources
3 reviewed
Profile ownership
Not yet claimed
Last reviewed
Sep 14, 2026
View sources

Profile

Identity, professional record and current appointments.

Overview

Professional record at a glance

A concise summary of information supported by the cited public sources. Missing information is treated as unknown, not as a negative finding.

Current roles
21 current organization shown on this profile
Board positions
11 supported by public sources, 0 supplied by the profile owner
Committee roles
Not establishedNo committee role is currently confirmed by the cited sources
Qualifications
Not establishedNo qualification is currently confirmed by the cited sources

Professional narrative

About

Timothy W. Byrne serves as President and Chief Executive Officer of United States Lime & Minerals, Inc. He is one of the named executive officers and serves as a director of the company.

Sources are shown with the information they support.

Current roles

Appointments & responsibilities

Executive appointments

Board appointments

Governance

Board appointments, committee responsibilities and disclosed relationships.

Board and advisory record

Board service

Sources are shown with each role, education record, or credential.

President and Chief Executive Officer and Director

UNITED STATES LIME & MINERALS INC

Current · start date not disclosed

Confirmed by public sourceView source

Connections

Explore the roles, education and affiliations published in this record.

UNITED STATES LIME & MINERALS INC

Open UNITED STATES LIME & MINERALS INC profile →

President and Chief Executive Officer at UNITED STATES LIME & MINERALS INC

Start not stated → End not stated

current · source reported

Observed: 2026-09-20

President and Chief Executive Officer and Director at UNITED STATES LIME & MINERALS INC

Start not stated → End not stated

current · source reported

Observed: 2026-09-20

UNITED STATES LIME…UNITED STATES LIME & MINERALS INCTimothy W. Byrne

Dashed lines mark past roles. Select a connection to see its dates and sources.

Relationship map

Connected through the public record

Direct relationships from verified facts and published résumé records. Private connections are excluded.

Direct public links only

Only published affiliations are shown here. Private relationships require authorized access.

Experience

Career history, education, credentials and public contributions.

Published record

Featured coverage

Selected publications and public sources used to establish this profile. Inclusion records provenance; it is not an endorsement.

Source 1 · Sec FilingUSLM DEF 14A executive officersSupports AI and ML experience, Cybersecurity experience, Executive company, Executive title, Technology background.Open source

Basis

Identifiers, sources, dates and record limitations.

Identifiers

Alpha ID
alpha:person:timothy-w-byrne
Record version
public-0

Sources

Sources and published information

Each item links to the public source used to support it. When sources disagree, the item is clearly marked for review.

AI and ML experience · Source reportedAI and ML experience: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 5, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 5, 2026

Board membership · Source reportedServes on the board of UNITED STATES LIME & MINERALS INC1 source
Verification
Source reported
Confidence
Not stated
Last reviewed
Not stated
Cybersecurity experience · Source reportedCybersecurity experience: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 5, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 5, 2026

Executive company · Source reportedExecutive at UNITED STATES LIME & MINERALS INC1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 5, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 5, 2026

Executive title · Source reportedExecutive title: President and Chief Executive Officer1 source
Verification
Source reported
Confidence
94%
Last reviewed
May 5, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 5, 2026

Technology background · Source reportedTechnology background: not identified in the cited filing1 source
Verification
Source reported
Confidence
72%
Last reviewed
May 5, 2026
  • SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 5, 2026

View all sources3 records
  1. SEC EDGAR

    Sec Filing · Tier 3 · Reviewed May 5, 2026

    Supports: AI and ML experience · Cybersecurity experience · Executive company · Executive title · Technology background

  2. https://www.sec.gov/Archives/edgar/data/82020/000110465926036078/uslm-20260501xdef14a.htm

    Sec Def 14a · Tier not stated · Reviewed Sep 14, 2026

    Supports: President and Chief Executive Officer at UNITED STATES LIME & MINERALS INC (NASDAQ: USLM) · President and Chief Executive Officer and Director at UNITED STATES LIME & MINERALS INC (NASDAQ: USLM)

  3. https://www.sec.gov/Archives/edgar/data/82020/000110465926036078/uslm-20260501xdef14a.htm

    Public Source · Tier not stated · Reviewed Not stated

    Supports: Board membership