Connie Matsui - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Connie Matsui has filed 2 SEC Form 4 filings across 2 companies in the last 90 days - buying. Lifetime open-market purchases: $40K.
Profile
Connie Matsui is a corporate insider at ARTELO BIOSCIENCES, INC. (ARTL). Matsui's filing history also covers SUTRO BIOPHARMA, INC. (STRO) and HALOZYME THERAPEUTICS, INC. (HALO). Matsui has reported 8 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | Insider |
|---|---|
| Notability | 20/100 |
Board memberships
- ARTELO BIOSCIENCES, INC.
- SUTRO BIOPHARMA, INC.
- HALOZYME THERAPEUTICS, INC.
Awards & honors
- Board member at multiple biotechnology firms
- Expertise in strategic development in life sciences
Trading Pattern
InsiderAlpha's records for Connie Matsui go back to 2024: 8 primary Form 4 filings, an average of 2.7 per year. The typical open-market purchase is $40K (1 buy totaling $40K). The largest single buy on record is $40K of STRO in 2025. 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 Connie Matsui 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.
- Insider at ARTELO BIOSCIENCES, INC. (ARTL) - 4 filings, 2024 to 2026
- Insider at SUTRO BIOPHARMA, INC. (STRO) - 3 filings, 2025 to 2026
- Insider at HALOZYME THERAPEUTICS, INC. (HALO) - 1 filing, 2024
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2025-10-16 | STRO | SUTRO BIOPHARMA, INC. | P - Open-market purchase | 50.0K | $0.80 | $40K |
| 2024-12-03 | HALO | HALOZYME THERAPEUTICS, INC. | G - Bona-fide gift | 10.5K | $0.00 |
Companies - Last 90 Days
- ARTELO BIOSCIENCES, INC. (ARTL) - 1 filing, last 2026-07-21
- SUTRO BIOPHARMA, INC. (STRO) - 1 filing, last 2026-06-09
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Connie Matsui 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.
- Gregory K. Chow - $16K of STRO open-market activity in the last 12 months
- Hans-Peter Gerber - $14K of STRO open-market activity in the last 12 months
- Jane Chung - $10K of STRO open-market activity in the last 12 months
- David Pauling - $10K of STRO open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- CONSTELLATION SOFTWARE INC
- Lisa A. Conte
- Control Empresarial de Capitales S.A. de C.V.
- Leon G. Cooperman
- Corbin Capital Partners, L.P.
- Kenneth S. Courtis
- Cynosure Group, LLC
- James H. Dahl
Frequently Asked Questions
Who is Connie Matsui?
Connie Matsui is a corporate insider at ARTELO BIOSCIENCES, INC. (ARTL). Matsui's filing history also covers SUTRO BIOPHARMA, INC. (STRO) and HALOZYME THERAPEUTICS, INC. (HALO). Matsui has reported 8 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Connie Matsui submitted recently?
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Connie Matsui been buying or selling stock?
Recorded transactions: 1 open-market purchase ($40K) and 0 open-market sales across all tracked filings.
Where can I see all of Connie Matsui'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 Connie Matsui profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.