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
$15.05M
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 | $240.43 | $3.78M | $0 | 13 | 2026-05-11 |
| KLRA | Director | — | $16.74 | — | $0 | 1 | 2026-04-20 |
| RLYB | Executive Chairman | 89,329 | $16.16 | $1.44M | $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 | $25.25 | $9.83M | $0 | 50 | 2010-05-18 |
Recent Filings · Page 4 of 9
89 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2016-02-08 | — | Mixed | +7,892 | -$540.7K | |
| 2015-08-05 | — | Mixed | — | -$2.88M | |
| 2015-05-22 | — | Sell (S) | −4,056 | -$650.3K | |
| 2015-03-03 | — | Mixed | +4,730 | -$66.7K | |
| 2015-02-12 | — | Sell (S) | −3,897 | -$678.0K | |
| 2015-02-09 | — | Grant (A) | +11,690 | $0 | |
| 2014-11-04 | — | Mixed | — | -$812.4K | |
| 2014-03-04 | — | Grant (A) | +3,000 | $0 | |
| 2013-05-15 | — | Grant (A) | +25,000 | $0 | |
| 2010-05-18 | PFE | Grant (A) | — | $0 | EDGAR |
Form 4 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.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.