Updated Jul 16, 2026
Jayabalan Harish has filed 3 SEC Form 4 filings across 1 company in the last 90 days — active on both sides. Lifetime open-market purchases: $58K. Lifetime open-market sales: $1.64M.

Harish Jayabalan serves as the Executive Vice President, Chief Information Security Officer, and Chief Risk Officer at Miami International Holdings, Inc. He has been involved in the company's operations and regulatory compliance within the financial marketplace sector.
| Role | EVP, CISO and CRO |
|---|---|
| Notability | 30/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-07 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | S — Open-market sale | 20.0K | $42.12 | $842K |
| 2026-07-07 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | M — Option exercise | 2.5K | $12.00 | $30K |
| 2026-07-07 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | M — Option exercise | 16.7K | $12.00 | $200K |
| 2026-07-07 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | M — Option exercise | 834 | $12.00 | $10K |
| 2026-06-18 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | A — Grant or award | 4.7K | $0.00 | |
| 2026-06-10 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | S — Open-market sale | 9.8K | $40.04 | $392K |
| 2026-06-10 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | M — Option exercise | 9.8K | $12.00 | $117K |
| 2026-06-10 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | S — Open-market sale | 10.2K | $40.12 | $410K |
| 2026-06-10 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | M — Option exercise | 10.2K | $12.00 | $123K |
| 2025-09-09 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | F — Tax withholding / forfeiture | 2.0K | $37.30 | $74K |
| 2025-09-09 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | M — Option exercise | 3.0K | $12.00 | $36K |
| 2025-09-09 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | M — Option exercise | 22.0K | $12.00 | $264K |
| 2025-08-15 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | J — Other acquisition / disposition | 43.4K | — | |
| 2025-08-15 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | J — Other acquisition / disposition | 500 | — | |
| 2025-08-13 | MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | P — Open-market purchase | 2.5K | $23.00 | $58K |
Harish Jayabalan serves as the Executive Vice President, Chief Information Security Officer, and Chief Risk Officer at Miami International Holdings, Inc. He has been involved in the company's operations and regulatory compliance within the financial marketplace sector.…
3 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 1 open-market purchases ($58K) and 3 open-market sales ($1.64M) across all tracked 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.
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