MARK T BEHRMAN
CIK 1078002 · President and CEO · last filed 2026-04-27
"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
$22.14M
Companies
2
Total Filings
50
Lifetime Open-Market Net
-$2.58M
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 |
|---|---|---|---|---|---|---|---|
| LXU | President and CEO | 2,194,075 | $10.09 | $22.14M | -$2.77M | 32 | 2026-04-27 |
| PHX MINERALS INC. (PHX) Delisted | Director | 354,614 | $4.35 | $1.54M | $192.2K | 16 | 2025-06-23 |
Recent Filings · Page 4 of 5
50 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 |
|---|---|---|---|---|---|
| 2020-12-31 | LXU | Tax (F) | −62,777 | -$164.6K | EDGAR |
| 2020-09-02 | PHX MINERALS INC. (PHX) Delisted | Buy (P) | +30,000 | $48.9K | EDGAR |
| 2020-02-19 | LXU | Tax (F) | −12,185 | -$34.0K | EDGAR |
| 2020-01-14 | PHX MINERALS INC. (PHX) Delisted | Grant (A) | +4,460 | $74 | EDGAR |
| 2020-01-14 | PHX MINERALS INC. (PHX) Delisted | Grant (A) | +4,460 | $74 | EDGAR |
| 2020-01-02 | LXU | Mixed | +352,693 | $1.48M | EDGAR |
| 2019-08-05 | LXU | Buy (P) | +19,300 | $99.2K | EDGAR |
| 2019-02-19 | LXU | Tax (F) | −11,415 | -$83.7K | EDGAR |
| 2019-01-07 | PHX MINERALS INC. (PHX) Delisted | Grant (A) | +2,258 | $38 | EDGAR |
| 2019-01-02 | LXU | Mixed | +339,749 | $1.83M | 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.