MARK B SEGALL
CIK 1116572 · last filed 2026-03-17
"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
$3.97M
Companies
4
Total Filings
30
Lifetime Open-Market Net
-$87.0K
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 |
|---|---|---|---|---|---|---|---|
| BELFB | Director | 13,527 | $291.93 | $3.95M | $0 | 7 | 2026-03-17 |
| NCMI | Director | 8,553 | $2.77 | $23.6K | -$139.5K | 13 | 2023-02-27 |
| ATMI INC (ATMI) Delisted | Director | 5,121 | — | — | $0 | 2 | 2014-02-14 |
| Answers CORP (ANSW) Delisted | Director | 5,500 | — | — | $52.5K | 7 | 2010-09-17 |
Recent Filings · Page 2 of 3
30 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 |
|---|---|---|---|---|---|
| 2020-09-02 | NCMI | Exer (M) | +7,102 | $0 | EDGAR |
| 2020-07-31 | NCMI | Grant (A) | — | $0 | EDGAR |
| 2020-05-20 | BELFB | Grant (A) | +4,000 | $0 | EDGAR |
| 2020-02-25 | NCMI | Exer (M) | +16,081 | $0 | EDGAR |
| 2019-08-05 | NCMI | Grant (A) | — | $0 | EDGAR |
| 2019-04-15 | NCMI | Exer (M) | +17,628 | $0 | EDGAR |
| 2019-01-25 | NCMI | Grant (A) | — | $0 | EDGAR |
| 2018-03-15 | NCMI | Grant (A) | — | $0 | EDGAR |
| 2016-05-17 | BELFB | Grant (A) | +4,000 | $0 | EDGAR |
| 2014-02-14 | ATMI INC (ATMI) Delisted | Grant (A) | +3,528 | $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.