Osamu R. Watanabe - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Osamu R. Watanabe has filed 1 SEC Form 4 filing across 1 company in the last 90 days - selling. Lifetime open-market sales: $633K.
Profile
Osamu R. Watanabe is a corporate insider at Moelis & Co (MC). Watanabe has reported 10 insider filings with the SEC since 2024. The most recent filing was in June 2026.
| Role | General Counsel, Secretary |
|---|---|
| Notability | 20/100 |
Board memberships
- Moelis & Co
Trading Pattern
InsiderAlpha's records for Osamu R. Watanabe go back to 2024: 8 primary Form 4 filings, an average of 2.7 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 Osamu R. Watanabe 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.
- General Counsel, Secretary at Moelis & Co (MC) - 8 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-02-23 | MC | Moelis & Co | S - Open-market sale | 2.8K | $62.23 | $172K |
| 2026-02-23 | MC | Moelis & Co | F - Tax withholding / forfeiture | 1.6K | $62.73 | $101K |
| 2026-02-23 | MC | Moelis & Co | M - Option exercise | 9.2K | - | |
| 2025-07-25 | MC | Moelis & Co | S - Open-market sale | 6.3K | $72.64 | $461K |
Companies - Last 90 Days
- Moelis & Co (MC) - 1 filing, last 2026-06-23
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Osamu R. Watanabe has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Kenneth Shropshire - $190K of MC open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Stephen G. Pagliuca
- Pale Fire Capital SE
- Bhaskar Panigrahi
- Paresh Patel
- PAULSON CO. INC.
- John Paulson
- Pentwater Capital Management LP
- Bryan Douglas Pereboom
Frequently Asked Questions
Who is Osamu R. Watanabe?
Osamu R. Watanabe is a corporate insider at Moelis & Co (MC). Watanabe has reported 10 insider filings with the SEC since 2024. The most recent filing was in June 2026.…
How many SEC Form 4 filings has Osamu R. Watanabe submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Osamu R. Watanabe been buying or selling stock?
Recorded transactions: 0 open-market purchases and 2 open-market sales ($633K) across all tracked filings.
Where can I see all of Osamu R. Watanabe'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 Osamu R. Watanabe profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.