DEEP RESEARCH · WAVEVIS
WaveVis: A Domestic GaN Bet in the K-Defense Supply Chain
GaN-on-SiC IDM model, defense-customer concentration, and cash-burn risk
0. Bottom line first
My core view is that WaveVis is a strategic asset for localizing GaN RF semiconductors inside Korea’s defense supply chain. But the financial profile is still weak: customer A concentration, R&D burden, negative operating cash flow, and dilution risk from a KRW 33.5 billion BW must be tracked together.
Official fact: Cumulative 3Q25 revenue was KRW 22.810 billion, up 2.8% from KRW 22.188 billion a year earlier. Operating profit was negative KRW 6.062 billion and net income was negative KRW 5.955 billion.
Interpretation: The technology strategy is attractive, but current revenue does not yet absorb fixed costs and R&D. The source’s breakeven revenue range of KRW 60-70 billion implies more than doubling from the current annualized scale of about KRW 30 billion.
1. Governance and financing history
As of end-3Q25, WaveVis combines founder ownership with multiple financial investors. The source reads this as the result of aggressive funding from Series A through E to finance early equipment investment.
| Shareholder | Stake | Shares | Note |
|---|---|---|---|
| Kim Jung-gon | 19.48% | 2,438,256 | Founder and chairman |
| STL No. 15 Private Investment | 5.53% | 692,307 | Major FI |
| SG Ace LLC | 4.99% | 625,353 | Major FI |
| Other shareholders | 70.00% | 8,763,677 | Retail and institutions |
| Total | 100.00% | 12,519,593 | - |
2. Technology moat: GaN-on-SiC and IDM
WaveVis supplies GaN-on-SiC RF semiconductors for defense and aerospace demand. The source emphasizes the material advantage for high-power/high-frequency use and the IDM model that internalizes design, process, and packaging.
GaN-on-SiC
Suited to radar, communications, and jammer applications where power, frequency, and heat dissipation matter.
Vertical integration
Unlike fabless competitors, internal production can reduce foundry constraints and support customized defense requirements.
Domestic alternative
Positioned as a Korean allied-market alternative in an area with heavy U.S. and Japanese export controls.
| Item | Global Tier 1 | Fabless competitor | WaveVis |
|---|---|---|---|
| Production scale | Massive | Dependent on foundries | Moderate |
| Technology leadership | Leading in ultra-high-frequency/power | Dependent on foundry technology | Fast follower in mid/high frequency |
| Pricing | High | Middle | Reasonable with cost competitiveness |
| Flexibility | Low | Medium | Very high |
| Export restrictions | Very high | Depends on foundry location | Low for Korean allied markets |
3. Customer concentration and model
Official fact: In 3Q25, 85.2% of revenue came from “Customer A.” The source infers this may be a top Korean defense prime such as Hanwha Systems or LIG Nex1, but does not state it as confirmed fact.
Interpretation: Customer concentration cuts both ways. Once designed into a prime contractor’s project, demand may last, but any schedule delay at one customer immediately affects WaveVis revenue and cash flow.
4. Financials and cash flow
| Item | 2022 | 2023 | 3Q24 cumulative | 3Q25 cumulative | YoY |
|---|---|---|---|---|---|
| Revenue | KRW 4.400bn | KRW 16.900bn | KRW 22.188bn | KRW 22.810bn | +2.8% |
| Cost of sales | - | - | KRW 15.350bn | KRW 17.241bn | +12.3% |
| Gross profit | - | - | KRW 6.838bn | KRW 5.569bn | -18.6% |
| Operating profit | -KRW 9.500bn | -KRW 11.500bn | -KRW 3.020bn | -KRW 6.062bn | Still loss-making |
| Net income | -KRW 15.900bn | -KRW 15.000bn | -KRW 4.294bn | -KRW 5.955bn | Still loss-making |
Official fact: At end-3Q25, cash and cash equivalents were about KRW 7.8 billion, current assets KRW 36.3 billion, and current liabilities KRW 19.9 billion, for a current ratio of about 182%. The company raised KRW 19.0 billion for working capital and KRW 4.0 billion for facilities through its October 2024 IPO, and issued KRW 33.5 billion of bonds with warrants in October 2025.
Interpretation: IPO and BW proceeds support short-term liquidity, but operating cash flow of negative KRW 5.1 billion and investing cash flow of negative KRW 3.5 billion show that the business is not yet self-funding. The BW funds production ramp-up, but leaves dilution risk.
5. End markets and scenarios
- Domestic advanced weapons: Korea’s 2027 goal to become a top-four defense exporter, plus Cheongung-II, L-SAM, and KF-21 production, connect to radar localization demand.
- Anti-drone: Drone threats after the Ukraine war increase demand for jammers and anti-drone systems. The source mentions domestic and Indian module supply.
- Space and 6G: LEO satellite networks and space-qualified GaN RF chips are medium-term options.
Bull Case
- The source’s upside case requires X-Band yield stabilization in 2025, export shipments including India, and revenue exceeding KRW 60 billion.
Bear Case
- Customer A project delays, yield failure, additional financing, and overhang selling can pressure loss reduction and the share price.
Sources
- Original post: https://m.blog.naver.com/PostView.naver?blogId=star_of_self&logNo=224110269891
- Vitzro Nextech investment prospectus: https://drive.google.com/open?id=1wN4bI1FNfo83kxym_a0K1KiziZ7OYQQu