Matson Inc (MATX) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 1, 2026.
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- Filings shown
- 13
- Open-market buys
- 0
- Open-market sells
- 21
Counts cover the 13 most recent Form 4 filings Tradune holds for MATX (filed Jul 29 – Oct 1, 2026). No completed check of MATX's Form 4 list on SEC EDGAR is on record yet; the latest MATX filing Tradune holds was filed Oct 1, 2026. This is not guaranteed to be the complete record — see MATX's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 13 filings Tradune holds for MATX filed Jul 29 – Oct 1, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
21 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 11 sales· 30,000 sh
- checkbox disclosed
- On filings with the box not checked
- 10 sales· 14,423 sh
- not proof that no plan exists
- Not comparable
- 0 sales· 0 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Matthew J. CoxChairman & CEO | 0 | 11 | — | 30,000 | −$6,456,841 |
| Vic S. Angoco Jr.Executive Vice President | 0 | 3 | — | 2,293 | −$510,784 |
| Peter T. HeilmannEVP, Chief Admin. Officer & GC | 0 | 1 | — | 5,000 | −$1,100,750 |
| Jason Lee TaylorSenior Vice President | 0 | 1 | — | 1,961 | −$425,537 |
| John Warren SullivanSenior Vice President | 0 | 1 | — | 1,917 | −$399,675 |
| Leonard P. IsotoffSenior Vice President | 0 | 1 | — | 1,250 | −$260,370 |
| Kuuhaku T. ParkSenior Vice President | 0 | 1 | — | 1,000 | −$208,490 |
| Christopher A. ScottEVP & Chief Commercial Officer | 0 | 1 | — | 600 | −$131,940 |
| Jennifer C. TungulSenior Vice President | 0 | 1 | — | 402 | −$83,813 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at MATX
No open-market insider purchases (Form 4 code P) were reported for MATX in the trailing 90 days. The filings below may include other transaction types — sales, grants, option exercises, and tax withholding — shown for completeness; they are not open-market purchases.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 752 | $223.72 | 227,839 | −0.3% | Sep 29, 2026 |
| Open-market sale 10b5-1 box checked | 705 | $220.32 | 228,591 | −0.3% | Sep 29, 2026 |
| Open-market sale 10b5-1 box checked | 6,048 | $222.73 | 219,296 | −2.7% | Sep 29, 2026 |
| Open-market sale 10b5-1 box checked | 2,495 | $221.52 | 225,344 | −1.1% | Sep 29, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 77 | $224.31 | 5,775 | −1.3% | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 80 | $224.31 | 12,427 | −0.6% | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 3,443 | $223.91 | 235,411 | −1.4% | Aug 28, 2026 |
| Open-market sale 10b5-1 box checked | 6,115 | $223.22 | 229,296 | −2.6% | Aug 28, 2026 |
| Open-market sale 10b5-1 box checked | 442 | $225.05 | 238,854 | −0.2% | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 670 | $222.81 | 13,548 | −4.7% | Aug 24, 2026 |
| Open-market sale 10b5-1 box not checked | 1,041 | $221.98 | 12,507 | −7.7% | Aug 24, 2026 |
| Open-market sale 10b5-1 box not checked | 582 | $224.09 | 14,218 | −3.9% | Aug 24, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 5,000 | $220.15 | 20,506 | −20% | Aug 19, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 600 | $219.90 | 9,354 | −6.0% | Aug 19, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 1,961 | $217.00 | 9,377 | −17% | Aug 13, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 402 | $208.49 | 5,852 | −6.4% | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 1,917 | $208.49 | 7,630 | −20% | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 1,000 | $208.49 | 9,984 | −9.1% | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 1,250 | $208.30 | 6,527 | −16% | Aug 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 1,172 | $198.61 | 246,613 | −0.5% | Jul 29, 2026 |
| Open-market sale 10b5-1 box checked | 1,163 | $200.56 | 247,785 | −0.5% | Jul 29, 2026 |
| Open-market sale 10b5-1 box checked | 348 | $201.43 | 248,948 | −0.1% | Jul 29, 2026 |
| Open-market sale 10b5-1 box checked | 7,317 | $199.81 | 239,296 | −3.0% | Jul 29, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to MATX's (Oct 1, 2026).
Frequently asked about MATX insider activity
How many insiders bought MATX stock in the last 90 days?
No open-market purchases (Form 4 code P) of MATX shares were reported by Matson Inc insiders in the trailing 90 days. The 13 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for MATX?
The most recent Form 4 on this page was filed by Matthew J. Cox (Chairman & CEO) on Oct 1, 2026, reporting 4 transactions. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market MATX insider sale shown?
The largest open-market sale among the filings shown was 7,317 MATX shares at $199.81 (about $1,462,010) by Matthew J. Cox (Chairman & CEO) on Jul 29, 2026. Value is shares × the price reported on the Form 4; that Form 4 has the Rule 10b5-1 box checked.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track MATX insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.