MARTIN P SLARK
CIK 1012930 · Vice Chairman and C.E.O. · last filed 2026-04-23
MARTIN P SLARK is a Vice Chairman and C.E.O. who has filed 115 SEC Form 4 insider transactions across 6 companies since 2007. The most recent filing shows the insider was granted $6.0K of NTRSO on Apr 23, 2026. Across all open-market trades the lifetime net is −$11.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $12.7M 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.
$12.74M
6
115
-$11.21M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| NTRSO | Director | 26,115 | $18.56 | $484.7K | $0 | 33 | 2026-04-23 |
| HUBG | Director | 243,050 | $46.38 | $11.27M | -$818.0K | 26 | 2026-01-07 |
| NORTHERN TRUST CORP (NTRSP) Delisted | Director | 14,810 | — | — | $0 | 5 | 2019-10-02 |
| NORTHERN TRUST CORP (NTRS.P) Delisted | Director | 11,379 | — | — | $0 | 2 | 2016-04-20 |
| MOLEX INC (MOLX) Delisted | Vice Chairman and C.E.O. | 626,821 | — | — | -$10.40M | 43 | 2013-10-07 |
| NTRS | Director | 5,641 | $174.34 | $983.6K | $0 | 5 | 2013-04-30 |
Recent Filings
115 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-04-23 | NTRSO | Grant (A) | +1,023 | $6.0K | EDGAR |
| 2026-04-02 | NTRSO | Grant (A) | +65 | $9.2K | EDGAR |
| 2026-01-07 | HUBG | Mixed | +2,984 | -$72.5K | EDGAR |
| 2026-01-05 | NTRSO | Grant (A) | +67 | $9.2K | EDGAR |
| 2025-10-02 | NTRSO | Grant (A) | +69 | $9.1K | EDGAR |
| 2025-07-02 | NTRSO | Grant (A) | +66 | $8.5K | EDGAR |
| 2025-04-24 | NTRSO | Grant (A) | +2,034 | $12.5K | EDGAR |
| 2025-01-07 | HUBG | Mixed | +2,936 | -$70.3K | EDGAR |
| 2025-01-03 | NTRSO | Grant (A) | +68 | $7.0K | EDGAR |
| 2024-10-02 | NTRSO | Grant (A) | +77 | $6.9K | EDGAR |