Stock Administrator

Mythic

. Build Mythic’s equity administration function from the ground up, including policies, procedures, grant and vesting calendars, controls, and documentation .

Posted 10/16/2026full-timeUnited StatesSeniorLead💰 $200,000 - $235,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in equity administration, including the management of stock options, RSUs, PSUs, and compliance with ASC 718. Proven ability to lead platform implementations and collaborate with Finance, Payroll, and Legal teams to ensure accurate equity management and reporting.

Highest-signal resume keywords

Equity AdministrationStock Plan AdministrationASC 718 ComplianceCertified Equity Professional (CEP)Cap Table Management

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Equity CompensationISO/NSO OptionsRSUsPSUsESPPsCap Table MechanicsEquity Tax TreatmentData MigrationVendor ManagementAward Configuration

Soft Skills

Highly OrganizedClear CommunicationAttention to Detail

Tools & Technologies

Equity Administration PlatformHR IntegrationsFinance Integrations

Certifications & Qualifications

Certified Equity Professional (CEP)

Industry Keywords

Section 16 ComplianceRule 144Insider Trading PoliciesBoard and Compensation CommitteeSOX-Ready Controls

About the role

Key responsibilities & impact

Build Mythic’s equity administration function from the ground up, including policies, procedures, grant and vesting calendars, controls, and documentation
Lead implementation of the equity administration platform, including vendor management, data migration, plan and award configuration, HR and finance integrations, testing, and reconciliation
Own and reconcile the cap table, legal records, equity platform, and transfer agent records
Administer the full award lifecycle for stock options, RSUs, PSUs, and future programs such as an ESPP
Validate historical grants, resolve duplicate participant records, confirm termination dates, and close documentation gaps
Prepare for transaction and liquidity events, including event-contingent vesting, award treatment, conversions, settlement, and tax withholding
Partner with Finance on ASC 718 stock-based compensation, quarterly close, expense reporting, external audit, and SOX-ready controls
Partner with Payroll and People on tax withholding, income reporting, grants, promotions, and terminations
Run Board and Compensation Committee equity approval processes and maintain records
Build public-company equity compliance, including insider trading policies, trading windows, pre-clearance, Section 16 reporting, Rule 144, 10b5-1 plans, and disclosure inputs
Lead employee onboarding, FAQs, education sessions, and communications about equity
Support auditors, outside counsel, and diligence requests
Support broader corporate governance and legal readiness initiatives

Requirements

What you’ll need

8+ years of stock plan administration or equity compensation experience, including ownership of an equity function
Experience as a company’s first or senior-most equity professional strongly preferred
Experience leading equity administration platform implementation and integrating it with Finance, People, Payroll, and Legal
Thorough command of ISO/NSO options, RSUs, PSUs, ESPPs, cap table mechanics, equity tax treatment and withholding, and ASC 718
Working knowledge of Section 16, Rule 144, and insider trading compliance
Experience working directly with a Board and Compensation Committee, outside counsel, and external auditors
Comfortable working as a team of one; highly organized and exacting about accuracy; able to explain complex equity topics clearly
Certified Equity Professional (CEP) designation preferred