Company · Ownership research

IPG PHOTONICS CORP IPGP

CIK 0001111928

Form 4 transactions dated Sep 1, 2023 to Sep 23, 2026, as reported to the SEC.

Insider trading Initial holdingsInstitutional holders

This page lists 30 of 34 rows; the complete set is available through the API.

Insider filings on file run through 2026-09-03.

Some filings are submitted jointly by several insiders. The SEC form does not apportion the reported figures between them, so results include every joint filer.

Insider purchases & sales

Purchased: $199.40K
Sold: $109.72M

Sep 1, 2023 – Sep 3, 2026
Available records · partial months are marked ·

Insiders in this window

202610 of 30 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-09-02	Valentin Gapontsev Trust I 10% owner	Sale10b5-1 footnote	$706.83K 9,306 shares sold	0.14% sold Direct holding	▾
2026-09-01	Valentin Gapontsev Trust I 10% owner	Sale10b5-1 footnote	$1.36M 18,091 shares sold	0.27% sold Direct holding	▾
2026-08-26	PEELER JOHN R Director	Purchase	$199.40K 2,710 shares bought	14.91% added Direct holding	▾
2026-08-05	IP FIBRE DEVICES LTD 10% owner	Sale10b5-1 footnote	$1.74M 18,111 shares sold	0.28% sold Direct holding	▾
2026-08-04	IP FIBRE DEVICES LTD 10% owner	Sale10b5-1 footnote	$1.16M 12,202 shares sold	0.19% sold Direct holding	▾
2026-07-31	IP FIBRE DEVICES LTD 10% owner	Sale10b5-1 footnote	$2.32M 27,000 shares sold	0.42% sold Direct holding	▾
2026-07-31	SCHERBAKOV EUGENE A Director · 10% owner	Sale10b5-1 footnote	$131.99K 1,524 shares sold	3.06% sold Direct holding	▾
2026-07-21	Valentin Gapontsev Trust I 10% owner	Sale10b5-1 footnote	$5.76M 56,316 shares sold	0.84% sold Direct holding	▾
2026-06-29	IP FIBRE DEVICES LTD 10% owner	Sale10b5-1 footnote	$6.81M 65,700 shares sold	1.01% sold Direct holding	▾
2026-06-29	Lopresti Angelo P SVP, Secretary & Gen Counsel · 10% owner	Sale10b5-1 footnote	$110.33K 1,000 shares sold	1.64% sold Direct holding	▾

Showing 30 / 30 record groups in 2026. The complete set is available through the API.

IPG PHOTONICS CORP · IPGP

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 30 of 30 purchase / sale groups and 30 of 34 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"IPGP","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.