Updated Jul 16, 2026
MOTT DAVID M has filed 2 SEC Form 4 filings across 2 companies in the last 90 days — buying. Lifetime open-market purchases: $7.34M. Historical track record: 4/5 stars across 7 tracked purchases.

David M. Mott is listed as a director across Ardelyx Inc. (ARDX), Mersana Therapeutics, Inc. (MRSN), and Novavax, Inc. (NVAX) based on SEC filings. The latest filing date provided is February 24, 2026, and it shows no stock purchases or sales in connection with these board roles.
| Role | Director |
|---|---|
| Notability | 60/100 |
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★★★☆ (4/5) |
|---|---|
| Total purchases tracked | 7 |
| Purchases with forward-return data | 7 |
| 30-day win rate | 7143% |
| 90-day win rate | 10000% |
| Avg 5-day return | +477.42% |
| Avg 30-day return | +898.41% |
| Avg 90-day return | +3920.70% |
| Best 30-day return | +2568.31% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-23 | NVAX | NOVAVAX INC | M — Option exercise | 18.9K | — | |
| 2026-06-18 | ARDX | ARDELYX, INC. | A — Grant or award | 26.5K | $0.00 | |
| 2026-06-18 | ARDX | ARDELYX, INC. | A — Grant or award | 20.3K | $0.00 | |
| 2026-02-24 | ARDX | ARDELYX, INC. | P — Open-market purchase | 333.3K | $5.84 | $1.95M |
| 2025-06-18 | ARDX | ARDELYX, INC. | A — Grant or award | 41.6K | $0.00 | |
| 2025-06-18 | ARDX | ARDELYX, INC. | A — Grant or award | 31.2K | $0.00 | |
| 2025-06-16 | ARDX | ARDELYX, INC. | P — Open-market purchase | 200.0K | $3.63 | $726K |
| 2025-06-12 | NVAX | NOVAVAX INC | M — Option exercise | 10.4K | $0.00 | |
| 2025-06-09 | ARDX | ARDELYX, INC. | P — Open-market purchase | 200.0K | $3.69 | $737K |
| 2025-05-15 | ARDX | ARDELYX, INC. | P — Open-market purchase | 100.0K | $3.29 | $329K |
| 2025-05-02 | ARDX | ARDELYX, INC. | P — Open-market purchase | 381.4K | $4.22 | $1.61M |
| 2024-12-27 | ARDX | ARDELYX, INC. | M — Option exercise | 100.0K | $0.55 | $55K |
| 2024-12-23 | ARDX | ARDELYX, INC. | P — Open-market purchase | 213.3K | $4.67 | $997K |
| 2024-11-14 | ARDX | ARDELYX, INC. | P — Open-market purchase | 215.9K | $4.62 | $997K |
David M. Mott is listed as a director across Ardelyx Inc. (ARDX), Mersana Therapeutics, Inc. (MRSN), and Novavax, Inc. (NVAX) based on SEC filings. The latest filing date provided is February 24, 2026, and it shows no stock purchases or sales in connection with these board roles.…
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Recorded transactions: 7 open-market purchases ($7.34M) and 0 open-market sales () across all tracked filings.
Across 7 tracked purchases, MOTT DAVID M averaged +898.4% avg 30-day return with a 7143% 30-day win rate. InsiderAlpha rates the track record at 4/5 stars.
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 MOTT DAVID M profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.