IVAN G SEIDENBERG
CIK 1187727 · Chairman · last filed 2026-02-19
"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
$15.62M
Companies
7
Total Filings
232
Lifetime Open-Market Net
-$8.78M
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 |
|---|---|---|---|---|---|---|---|
| MSGS | Director | — | $384.68 | — | $0 | 12 | 2026-02-19 |
| PWP | Director | 9,476 | $15.66 | $148.4K | $0 | 2 | 2022-05-26 |
| BLK | Director | 14,434 | $1032.00 | $14.90M | $0 | 36 | 2020-04-02 |
| BXP, Inc. (BXPpB) Delisted | Director | 9,038 | $25.16 | $227.4K | $0 | 17 | 2016-05-02 |
| VERIZON COMMUNICATIONS INC (WWVY) Delisted | Chairman | 629,218 | — | — | -$8.78M | 139 | 2011-12-27 |
| HON | Director | 2,597 | $220.31 | $572.1K | $0 | 20 | 2008-02-27 |
| WYETH (WYEp) Delisted | Director | 8,086 | — | — | $0 | 6 | 2008-01-23 |
Recent Filings · Page 6 of 24
232 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2014-10-02 | BLK | Grant (A) | +100 | $0 | EDGAR |
| 2014-10-01 | BXP, Inc. (BXPpB) Delisted | Grant (A) | — | $0 | EDGAR |
| 2014-08-04 | BXP, Inc. (BXPpB) Delisted | Grant (A) | — | $0 | EDGAR |
| 2014-07-02 | BLK | Grant (A) | +91 | $0 | EDGAR |
| 2014-07-01 | BXP, Inc. (BXPpB) Delisted | Grant (A) | — | $0 | EDGAR |
| 2014-01-02 | BLK | Grant (A) | +107 | $0 | EDGAR |
| 2013-10-02 | BLK | Grant (A) | +104 | $0 | EDGAR |
| 2013-07-02 | BLK | Grant (A) | +120 | $0 | EDGAR |
| 2013-04-02 | BLK | Grant (A) | +712 | $0 | EDGAR |
| 2013-01-03 | BLK | Grant (A) | +171 | $0 | 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.