MARTIN MACKAY
CIK 1414815 · Executive Chairman · last filed 2026-05-11
"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.
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Disclosed Exposure
$24.53M
Companies
6
Total Filings
89
Lifetime Open-Market Net
$103.5K
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 3 of 9
89 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2020-10-20 | 5:01 Acquisition Corp. (FVAM) Delisted | Other (J) | — | $0 | EDGAR |
| 2020-05-12 | CRL | Grant (A) | +1,198 | $0 | EDGAR |
| 2019-05-23 | CRL | Grant (A) | +2,481 | $0 | EDGAR |
| 2018-05-16 | CRL | Grant (A) | +2,564 | $0 | EDGAR |
| 2017-08-03 | CRL | Grant (A) | +2,782 | $0 | EDGAR |
| 2017-03-01 | — | Mixed | +10,945 | -$244.2K | |
| 2017-02-10 | — | Sell (S) | −217 | -$27.5K | |
| 2017-02-08 | — | Sell (S) | −2,728 | -$342.9K | |
| 2016-05-18 | — | Sell (S) | −4,097 | -$570.3K | |
| 2016-03-01 | — | Mixed | +6,000 | -$138.9K |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.