MARTIN MACKAY
CIK 1414815 · Executive Chairman · last filed 2026-05-11
MARTIN MACKAY is an Executive Chairman who has filed 89 SEC Form 4 insider transactions across 6 companies since 2007. The most recent filing shows the insider was granted $505.3K of CRL on May 11, 2026. Across all open-market trades the lifetime net is +$103.5K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $24.5M 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.
$24.53M
6
89
$103.5K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| CRL | Director | 15,730 | $187.51 | $2.95M | $0 | 13 | 2026-05-11 |
| KLRA | Director | — | — | — | $0 | 1 | 2026-04-20 |
| RLYB | Executive Chairman | 714,630 | $15.92 | $11.38M | $103.5K | 7 | 2026-02-20 |
| SpringWorks Therapeutics, Inc. (SWTX) Delisted | Director | 0 | $46.99 | $0 | $0 | 3 | 2025-07-02 |
| 5:01 Acquisition Corp. (FVAM) Delisted | Director | — | $10.00 | — | $0 | 1 | 2020-10-20 |
| PFE | Senior Vice President | 389,172 | $26.21 | $10.20M | $0 | 50 | 2010-05-18 |
Recent Filings
89 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-11 | CRL | Grant (A) | +2,845 | $505.3K | EDGAR |
| 2026-04-20 | KLRA | Grant (A) | — | $0 | EDGAR |
| 2026-02-20 | RLYB | Grant (A) | — | $0 | EDGAR |
| 2025-07-02 | SpringWorks Therapeutics, Inc. (SWTX) Delisted | Disp (D) | −20,023 | $0 | EDGAR |
| 2025-05-23 | CRL | Grant (A) | +1,761 | $237.7K | EDGAR |
| 2025-05-15 | RLYB | Grant (A) | — | $0 | EDGAR |
| 2025-05-15 | SpringWorks Therapeutics, Inc. (SWTX) Delisted | Grant (A) | +10,060 | $0 | EDGAR |
| 2025-01-06 | RLYB | Grant (A) | — | $0 | EDGAR |
| 2024-07-30 | SpringWorks Therapeutics, Inc. (SWTX) Delisted | Grant (A) | +9,963 | $0 | EDGAR |
| 2024-05-15 | CRL | Grant (A) | +931 | $212.6K | EDGAR |