Coherent Corp (COHR) 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 14, 2026.
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- Filings shown
- 18
- Open-market buys
- 0
- Open-market sells
- 9
Counts cover the 18 most recent Form 4 filings Tradune holds for COHR (filed Jul 6 – Oct 14, 2026); the score below covers only the trailing 90 days (0 buys, 9 sells). No completed check of COHR's Form 4 list on SEC EDGAR is on record yet; the latest COHR filing Tradune holds was filed Oct 14, 2026. This is not guaranteed to be the complete record — see COHR'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 17 filings Tradune holds for COHR filed Jul 24 – Oct 14, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
9 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 0 sales· 0 sh
- checkbox disclosed
- On filings with the box not checked
- 3 sales· 8,015 sh
- not proof that no plan exists
- Not comparable
- 6 sales· 21,621 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 |
|---|---|---|---|---|---|
| Julie Sheridan EngChief Technology Officer | 0 | 2 | — | 13,077 | −$3,583,081 |
| Enrico DigirolomoDirector | 0 | 2 | — | 7,587 | −$2,255,309 |
| Sherri R. LutherChief Financial Officer | 0 | 2 | — | 4,000 | −$1,278,680 |
| Stephen A. SkaggsDirector | 0 | 1 | — | 2,272 | −$629,062 |
| Lisa Neal-GravesDirector | 0 | 1 | — | 2,200 | −$590,524 |
| Robert P. BeardChief Strategy & Legal Officer | 0 | 1 | — | 500 | −$154,660 |
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 COHR
No open-market insider purchases (Form 4 code P) were reported for COHR between Jul 6, 2026 and Oct 14, 2026. 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 |
|---|---|---|---|---|---|
| Tax withholding | 18,284 | $312.62 | 52,571 | −26% | Oct 12, 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.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 636 | $258.93 | 22,267 | −2.8% | Feb 28, 2026 |
| Tax withholding | 1,130 | $154.00 | 24,280 | −4.4% | Nov 28, 2025 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 279 | — | 18,747 | +1.5% | Feb 11, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 641 | $287.81 | 20,458 | −3.0% | Oct 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Gift | 1,279 | — | 10,644 | −11% | Sep 11, 2026 |
| Open-market sale 10b5-1 box not checked | 5,315 | $305.99 | 11,923 | −31% | Sep 11, 2026 |
“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 |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 500 | $309.32 | 51,428 | −1.0% | Sep 9, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 2,200 | $268.42 | 13,033 | −14% | Sep 2, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 2,272 | $276.85 | — | — | Aug 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 2,272 | $276.88 | — | — | Aug 31, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 6,030 | $270.69 | — | — | Sep 1, 2026 |
| Open-market sale | 7,047 | $276.83 | — | — | Aug 31, 2026 |
| Tax withholding | 12,862 | $295.39 | — | — | Aug 28, 2026 |
| Grant / award | 5,373 | — | — | — | Aug 28, 2026 |
| Grant / award | 11,960 | — | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 3,358 | — | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,612 | — | — | — | Aug 28, 2026 |
| Grant / award | 2,449 | — | — | — | Aug 28, 2026 |
| Tax withholding | 2,174 | $295.39 | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 8,731 | — | — | — | Aug 28, 2026 |
| Tax withholding | 2,594 | $295.39 | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 5,373 | — | — | — | Aug 28, 2026 |
| Tax withholding | 1,896 | $295.39 | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 11,958 | $295.39 | — | — | Aug 28, 2026 |
| Grant / award | 30,564 | — | — | — | Aug 28, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 3,000 | $324.00 | — | — | Aug 18, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 1,000 | $306.68 | — | — | Jul 22, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 2,181 | $394.47 | 17,658 | −11% | Jul 1, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to COHR's (Oct 14, 2026).
Frequently asked about COHR insider activity
How many insiders bought COHR stock in these Form 4 filings?
No open-market purchases (Form 4 code P) of COHR shares were reported by Coherent Corp insiders between Jul 6, 2026 and Oct 14, 2026. The 18 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for COHR?
The most recent Form 4 on this page was filed by Sherri R. Luther (Chief Financial Officer) on Oct 14, 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 COHR insider sale shown?
The largest open-market sale among the filings shown was 7,047 COHR shares at $276.83 (about $1,950,834) by Julie Sheridan Eng (Chief Technology Officer) on Aug 31, 2026. Value is shares × the price reported on the Form 4; trades may be made under a prearranged Rule 10b5-1 plan.
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 COHR 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.