Guy Macdonald
CIK 1296998 · President and Chief Executive · last filed 2025-06-30
Guy Macdonald is a President and Chief Executive who has filed 65 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing, for SCYX, was dated Jun 30, 2025. Across all open-market trades the lifetime net is −$7.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $329.9K across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$329.9K
3
65
-$7.67M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SCYX | Director | 78,000 | $4.23 | $329.9K | $145.6K | 33 | 2025-06-30 |
| TETRAPHASE PHARMACEUTICALS INC (TTPH) Delisted | President and Chief Executive | 0 | — | — | -$7.82M | 30 | 2020-07-29 |
| IDENIX PHARMACEUTICALS INC (IDIX) Delisted | Executive VP, Operations | — | — | — | $0 | 2 | 2007-06-04 |
Recent Filings
65 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-06-30 | SCYX | Grant (A) | +23,000 | $0 | EDGAR |
| 2024-06-21 | SCYX | Grant (A) | +23,000 | $0 | EDGAR |
| 2023-06-23 | SCYX | Grant (A) | +10,000 | $0 | EDGAR |
| 2023-06-20 | SCYX | Grant (A) | — | $0 | EDGAR |
| 2022-06-22 | SCYX | Grant (A) | +10,000 | $0 | EDGAR |
| 2021-06-21 | SCYX | Grant (A) | — | $0 | EDGAR |
| 2021-03-31 | SCYX | Grant (A) | — | $0 | EDGAR |
| 2020-12-23 | SCYX | Mixed | +8,000 | $50.0K | EDGAR |
| 2020-07-29 | TETRAPHASE PHARMACEUTICALS INC (TTPH) Delisted | U | −15,703 | $0 | EDGAR |
| 2020-07-08 | SCYX | Grant (A) | — | $0 | EDGAR |