CMS Energy Corp (CMS) 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 Aug 3, 2026.
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- Filings shown
- 8
- Open-market buys
- 1
- Open-market sells
- 1
- Buys, 10b5-1 box not checked
- 1 of 1
Counts cover the 8 most recent Form 4 filings Tradune holds for CMS (filed May 11 – Aug 3, 2026); the score below covers only the trailing 90 days (1 buy, 0 sells). No completed check of CMS's Form 4 list on SEC EDGAR is on record yet; the latest CMS filing Tradune holds was filed Aug 3, 2026. This is not guaranteed to be the complete record — see CMS'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 1 filing Tradune holds for CMS filed Aug 3, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Srikanth MaddipatiEVP/CFO | 1 | 0 | 200 | — | +$14,491 |
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 CMS
Insiders reported 1 open-market purchase of CMS between May 11, 2026 and Aug 3, 2026, across 1 distinct buyer. The most recent purchase was reported by Srikanth Maddipati (EVP/CFO) on Jul 31, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 200 | $72.46 | 34,895 | +0.6% | Jul 31, 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 |
|---|---|---|---|---|---|
| Grant / award | 10,184 | — | 34,695 | +42% | Jun 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 3,000 | $74.31 | 67,111 | −4.3% | May 26, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 2,411 | — | 3,180 | +314% | May 8, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 2,411 | — | 37,594 | +6.9% | May 8, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 2,411 | — | 43,623 | +5.9% | May 8, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 2,411 | — | 20,903 | +13% | May 8, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 2,411 | — | 134,068 | +1.8% | May 8, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to CMS's (Aug 3, 2026).
Frequently asked about CMS insider activity
How many insiders bought CMS stock in these Form 4 filings?
1 distinct insider at CMS Energy Corp reported 1 open-market purchase (Form 4 code P) of CMS shares between May 11, 2026 and Aug 3, 2026, the most recent filed by Srikanth Maddipati (EVP/CFO) on Jul 31, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Who filed the most recent Form 4 for CMS?
The most recent Form 4 on this page was filed by Srikanth Maddipati (EVP/CFO) on Aug 3, 2026, reporting 1 transaction. 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 CMS insider sale shown?
The largest open-market sale among the filings shown was 3,000 CMS shares at $74.31 (about $222,930) by Brandon J. Hofmeister (Senior Vice President) on May 26, 2026. Value is shares × the price reported on the Form 4; its Rule 10b5-1 box is not checked.
Do the recent CMS insider purchases have the Form 4 10b5-1 box checked?
No. The one CMS open-market purchase shown was reported with the Rule 10b5-1 box not checked. A blank box records what the filer disclosed; it does not prove that no plan exists. Latest: Srikanth Maddipati (EVP/CFO) on Jul 31, 2026, 200 shares.
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 CMS 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.