Updated Jul 16, 2026
MARINER JONATHAN D has filed 2 SEC Form 4 filings across 2 companies in the last 90 days — selling. Lifetime open-market sales: $2.46M.
Jonathan D. Mariner is a corporate director known for his roles at various companies including Rocket Companies, Inc., Five9, Inc., and OneStream, Inc. He has participated in multiple SEC filings as a director but does not appear to have significant public recognition.
| Role | Director |
|---|---|
| Notability | 20/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-11 | RKT | Rocket Companies, Inc. | A — Grant or award | 16.3K | $0.00 | |
| 2026-05-22 | FIVN | Five9, Inc. | A — Grant or award | 9.0K | $0.00 | |
| 2026-04-02 | OS | OneStream, Inc. | D — Derivative transaction | 7.1K | — | |
| 2026-01-08 | OS | OneStream, Inc. | S — Open-market sale [10b5-1] | 5.5K | $23.59 | $131K |
| 2026-01-08 | OS | OneStream, Inc. | S — Open-market sale [10b5-1] | 2.4K | $22.66 | $55K |
| 2025-12-04 | OS | OneStream, Inc. | S — Open-market sale [10b5-1] | 18.4K | $20.90 | $385K |
| 2025-09-03 | OS | OneStream, Inc. | S — Open-market sale | 141 | $20.07 | $3K |
| 2025-08-04 | OS | OneStream, Inc. | S — Open-market sale | 6.6K | $23.53 | $156K |
| 2025-07-07 | OS | OneStream, Inc. | S — Open-market sale | 6.6K | $26.59 | $176K |
| 2025-06-11 | RKT | Rocket Companies, Inc. | A — Grant or award | 15.7K | $13.69 | $215K |
| 2025-06-02 | OS | OneStream, Inc. | S — Open-market sale | 6.6K | $27.90 | $185K |
| 2025-05-21 | OS | OneStream, Inc. | A — Grant or award | 7.1K | $0.00 | |
| 2025-05-21 | FIVN | Five9, Inc. | A — Grant or award | 7.8K | $0.00 | |
| 2024-11-27 | OS | OneStream, Inc. | S — Open-market sale | 787 | $31.00 | $24K |
| 2024-11-27 | OS | OneStream, Inc. | S — Open-market sale | 5.0K | $31.00 | $154K |
| 2024-11-27 | OS | OneStream, Inc. | J — Other acquisition / disposition | 787 | — | |
| 2024-11-27 | OS | OneStream, Inc. | J — Other acquisition / disposition | 5.0K | — | |
| 2024-11-18 | OS | OneStream, Inc. | S — Open-market sale | 5.2K | $31.00 | $162K |
| 2024-11-18 | OS | OneStream, Inc. | S — Open-market sale | 33.2K | $31.00 | $1.03M |
| 2024-11-18 | OS | OneStream, Inc. | J — Other acquisition / disposition | 5.2K | — |
Jonathan D. Mariner is a corporate director known for his roles at various companies including Rocket Companies, Inc., Five9, Inc., and OneStream, Inc. He has participated in multiple SEC filings as a director but does not appear to have significant public recognition.…
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Recorded transactions: 0 open-market purchases () and 11 open-market sales ($2.46M) 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.
Open the live MARINER JONATHAN D profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.