Yongsoo Kim - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Yongsoo Kim has filed 1 SEC Form 4 filing across 1 company in the last 90 days.
Profile
Yongsoo Kim holds the role of Director at WEBTOON Entertainment Inc. (WBTN). Kim has reported 7 insider filings with the SEC since 2026. The most recent filing was in May 2026.
| Role | President and Director, Director |
|---|---|
| Notability | 26/100 |
Board memberships
- WEBTOON Entertainment Inc.
Reported roles
- Director
Trading Pattern
InsiderAlpha's records for Yongsoo Kim go back to 2026: 7 primary Form 4 filings, an average of 7.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Yongsoo Kim has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Director at WEBTOON Entertainment Inc. (WBTN) - 5 filings, 2026
- Insider at WEBTOON Entertainment Inc. (WBTN) - 2 filings, 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-29 | WBTN | WEBTOON Entertainment Inc. | F - Tax withholding / forfeiture | 12.1K | $11.98 | $144K |
| 2026-04-27 | WBTN | WEBTOON Entertainment Inc. | F - Tax withholding / forfeiture | 6.2K | $11.13 | $69K |
| 2026-04-16 | WBTN | WEBTOON Entertainment Inc. | F - Tax withholding / forfeiture | 985 | $11.46 | $11K |
| 2026-04-07 | WBTN | WEBTOON Entertainment Inc. | A - Grant or award | 66.9K | $0.00 | |
| 2026-03-16 | WBTN | WEBTOON Entertainment Inc. | F - Tax withholding / forfeiture | 2.0K | $9.21 | $18K |
| 2026-02-17 | WBTN | WEBTOON Entertainment Inc. | F - Tax withholding / forfeiture | 4.7K | $10.61 | $50K |
| 2026-02-02 | WBTN | WEBTOON Entertainment Inc. | A - Grant or award | 37.9K | $0.00 |
Companies - Last 90 Days
- WEBTOON Entertainment Inc. (WBTN) - 1 filing, last 2026-05-29
Most Active Insiders Right Now
Yongsoo Kim has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- MetLife Investment Management, LLC - $1600000.00B of FINS open-market activity in the last 90 days
- Magnetar Financial LLC - $16357.48B of CRWV open-market activity in the last 90 days
- Marianne Okland - $18.46B of STNG open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $14.13B of SVRE open-market activity in the last 90 days
- Vanessa Allen Sutherland - $7.44B of PSX open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Caroline Young
- Jeffrey Yu
- George Raymond Zage III
- Payam Zamani
- Mahkam Zanganeh
- A.L. Sarroff Fund, LLC
- ABRAMS CAPITAL MANAGEMENT, L.P.
- Abu Dhabi Investment Authority
Frequently Asked Questions
Who is Yongsoo Kim?
Yongsoo Kim holds the role of Director at WEBTOON Entertainment Inc. (WBTN). Kim has reported 7 insider filings with the SEC since 2026. The most recent filing was in May 2026.…
How many SEC Form 4 filings has Yongsoo Kim submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Yongsoo Kim's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Yongsoo Kim profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.