Team — SDR Drone Inc.

Principals

The principals behind the platform.

Two Co-Chief Executives at the apex, an independent-director board overseeing governance, four operating leaders, and the Korean engineering bench at Sundori Drone Co., Ltd. Together they bring technology, programs, capital, governance, and global execution to one platform.

Office of the Co-Chief Executives

Apex · Two Co-CEOs

Co-Chief Executive · Founder

Sun-Sik Cho

Co-CEO · Founder & Platform Architect

Co-Chief Executive Officer and Director of SDR Drone Inc.; founder, principal shareholder, and Chief Executive Officer of Sundori Drone Co., Ltd.; architect of the platform. Three decades of unmanned-aviation engineering — from Korea's first commercial unmanned airships in 1991 through the development of the SDR Multi Flight Control system, the SDR-ONE integrated avionics board, and today's defense-standard drone platform. Shares board-level executive authority with the Co-CEO, directing the company's technology roadmap, R&D, and engineering platform strategy.

Co-Chief Executive · Founding Partner

Leo Chung

Co-CEO · Founding Partner

Co-Chief Executive Officer and Director of SDR Drone Inc. Leads global business strategy, international defense-program engagements, and government partnerships, building on the Sundori platform's engagements across nine markets, including the United States, Japan, India, Indonesia, Thailand, Mongolia, Bangladesh, Cambodia, and the Republic of Korea. Shares board-level executive authority with the Founder-CEO across capital strategy, public-company governance, and long-horizon commercial positioning. Responsible for procurement pathways and technology-transfer frameworks.

Board & Independent Directors

Oversight · Audit · Legal · Brand & Capital

Director

David Lee

Director & Corporate Administrator · Brand & Capital Partnerships

Strategist and investor with 35+ years of leadership across brand management, marketing, retail, and capital partnerships. Founder and President of Wireless Republic, L.L.C. and concurrent President of United Brokers, L.L.C., with prior tenure leading brand and marketing initiatives at TGF Graphic Factory, Inc. in New York. Active investor and trustee of multiple family trusts, applying long-horizon strategic stewardship across generations of capital. Educated at Parsons School of Design and New York University — a rare professional balancing the nuance of design with the discipline of business.

Independent Director · Audit

Young-Sun Yoo

Independent Director · Audit · Finance & Capital Markets

Senior finance executive with 35+ years across corporate finance, treasury, derivatives, risk management, and private equity. Currently CFO and Executive Vice President of Hapcheon Food Co., Ltd. Prior senior roles include Executive Vice President and Head of Treasury at Hana Bank, CFO and Executive Managing Director at Atinum Partners private equity firm, and Treasurer of Royal Bank of Canada's Seoul branch. M.B.A. in Finance and International Business from NYU Stern; B.A. in Economics from Sungkyunkwan University. Holds U.S. FINRA Series 3, 6, and 63 licenses.

Independent Director · Legal

Tong-Soo Chung

Independent Director · Legal & Government Affairs

Attorney and former senior U.S. government official with deep international trade and policy experience. Served in the U.S. Department of Commerce under the Clinton administration (1994–2001) as Director of Export Promotion and Coordination in the International Trade Administration, Director of the Advocacy Center, and Acting Deputy Assistant Secretary for Service Industries and Finance. Founding partner at Kim, Chung & Lim law firm in Los Angeles and founding president of the Korean American Coalition. A.B. Harvard College; M.P.A. from the Woodrow Wilson School at Princeton University; J.D. UCLA School of Law.

Operating Leadership

Operations · Technology · Legal & Government Affairs

Chief Operating Officer

Vincent Chung

COO & Director · Strategy & Corporate Development

Senior corporate executive with three decades of experience in M&A, capital markets, corporate restructuring, foreign investment, and business development. Currently Auditor of KOSDAQ-listed Biolog Device Co., Ltd. and Division Head at HANP Co., Ltd. Previously Executive Vice President of EM&I Co., Ltd. with senior advisory roles at Spero Global, Next Law, and Vantage Law. Notable transactions include the Korea launches of Polaroid, Canon, and Konica; the Locus Holdings–Cinema Service stock swap; corporate-control defense for Chokwang Paint; and the acquisition of Hanwha Group's mobile handset business through Vantage Mobile Corporation. B.S. in Mechanical Engineering, Hanyang University.

Corporate Governance

Paul Strickland

Director & Secretary · Corporate Governance & SEC Compliance

Corporate administrator and restructuring specialist with two decades of international business experience across finance, private equity, manufacturing, and technology. Director and Secretary of SDR Drone Inc. (formerly Hallmark Venture Group, Inc.). Led the company to full SEC reporting compliance, completed the FINRA reverse split, and oversaw the recovery of over $1.6 million in creditor assets. Founder of Selkirk Global Holdings, LLC, where he serves as a director and officer across multiple small-cap public companies focused on restructuring and governance. B.A. in Foreign Language & International Affairs from the University of Puget Sound; fluent in Mandarin Chinese.

Management & Administration

Jung-Hyun Jang

Head of Management & Administration

Head of Management & Administration at SDR Drone Inc., overseeing the full back-office function — administration, organizational design, human capital, financial controls, vendor and contract management, and internal reporting infrastructure. Translates strategic direction from the Co-CEOs and Board into day-to-day operational discipline, ensuring policies, controls, and execution rhythm scale with the company's defense and industrial programs across allied markets. Anchors the cross-border coordination between the North Palm Beach headquarters and Sundori Drone Co., Ltd., the Korean engineering and manufacturing partner, keeping governance, finance, and people systems aligned across two jurisdictions.

Technology & Programs

CY Park

General Manager · Technology & Program Management

A 21-year veteran bridging precision optical engineering and unmanned aerial platforms. Began his career in advanced optical design and high-precision inspection equipment, scaling complex hardware programs from R&D through manufacturing. Today, he leads the platform's drone technology planning and cross-functional program management — translating engineering depth into commercial execution across defense and industrial drone programs. A rare operator who combines deep technical fluency with the discipline of large-scale program delivery.

Engineering Leadership Bench

Sundori Drone Co., Ltd. (Korea) · Engineering & Manufacturing Partner

R&D Institute

Jung-Hwan Kim

Director · R&D Institute

Directs the R&D Institute — airframe design, avionics integration, and end-to-end product development. Principal authority on the technology roadmap and core platform architecture across rotary-wing and VTOL drones. Sets engineering priorities, approves design specifications for every production platform, and signs off on technical readiness before programs move from prototype to manufacturing.

Development & Production

Jong-Bae Kim

Director · Development & Production

Directs new-platform development and defense-program delivery at Sundori's Hanam facility. Owns design optimization — weight, payload integration, field-condition hardening — and manufacturing process control from prototype through serial production. Bridges R&D outputs to manufacturing reality, ensuring designs meet production yield, cost, and field-durability targets demanded by defense customers.

Software & Autonomy

Joon-Hwan Lee

Head of Software · Autonomy & Flight Systems

Leads the entire software stack of the platform at Sundori Drone Co., Ltd. — from onboard flight controllers and ground-control operating programs to multi-drone coordination and AI-based autonomy. Architect of the SDR Multi-Flight Control (MFS) suite and the single point of authority for all software architecture decisions across the platform. Designs 1:N swarm-control and AI autonomous-flight algorithms covering formation flight, leader-follower tracking, FANET mesh communications, and collision avoidance. Every line of flight, control, and autonomy code shipped on a Sundori-built drone is built, reviewed, or directly authored under his ownership.

Engineering Operations

Si-On Jang

Manager · Engineering Operations & Certification

Manages the R&D Institute's design-to-build operations — 2D/3D mechanical drafting, 3D-printed airframe fabrication, BOM and inventory control, and airframe assembly with after-sales support. Handles KIAST safety certifications and Drone One-Stop registrations, and instructs Sundori's drone operator training programs. Operational anchor that converts engineering drawings into deliverable hardware on tight defense-program timelines.

Production & Avionics

Jun-Young Kim

Manager · Production & Avionics Assembly

Production manager focused on drone airframe assembly and onboard electronics integration. Six-plus years at Sundori Drone Co., Ltd. across special-purpose drone manufacturing and R&D delivery. Certified across three Korean aviation-maintenance trades — airframe, engine, and equipment — and holds an Ultralight UAV operator license. Final touchpoint between assembled platform and field deployment, responsible for quality control and acceptance testing on every unit that leaves Sundori's Hanam facility.

The team building the platform.