MARTIN P SLARK
CIK 1012930 · Vice Chairman and C.E.O. · last filed 2026-04-23
"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
$12.74M
Companies
6
Total Filings
115
Lifetime Open-Market Net
-$11.21M
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 |
|---|---|---|---|---|---|---|---|
| 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 · Page 5 of 12
115 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2019-10-02 | NORTHERN TRUST CORP (NTRSP) Delisted | Grant (A) | +8 | $744 | EDGAR |
| 2019-07-02 | NORTHERN TRUST CORP (NTRSP) Delisted | Grant (A) | +6 | $633 | EDGAR |
| 2019-04-25 | NORTHERN TRUST CORP (NTRSP) Delisted | Grant (A) | +1,168 | $2.2K | EDGAR |
| 2019-01-04 | HUBG | Grant (A) | +5,377 | $0 | EDGAR |
| 2018-04-19 | NORTHERN TRUST CORP (NTRSP) Delisted | Grant (A) | +1,033 | $0 | EDGAR |
| 2018-01-04 | HUBG | Grant (A) | +5,500 | $0 | EDGAR |
| 2017-04-27 | NORTHERN TRUST CORP (NTRSP) Delisted | Grant (A) | +1,214 | $0 | EDGAR |
| 2017-01-04 | HUBG | Grant (A) | +5,500 | $0 | EDGAR |
| 2016-04-20 | NORTHERN TRUST CORP (NTRS.P) Delisted | Grant (A) | +1,531 | $0 | EDGAR |
| 2016-02-10 | HUBG | Buy (P) | +10,000 | $348.8K | EDGAR |
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.