IPG Photonics Corporation (IPGP) Insider Trading

Last 12 months

Insiders bought $199k and sold $4.06M on the open market.

65% of the selling was scheduled in advance under 10b5-1 plans. SVP, Chief Financial Officer Timothy Pv Mammen sold $1.2M on May 22, 12% of their stake, outside a plan.

Net open-market

−$3.86M

1 buy · 19 sales

Under a 10b5-1 plan

65%

of the value sold

Insiders who bought / sold

1 / 8

executives and directors

Last open-market buy

Aug 2026

Aug 26, 2026

Get an email when IPGP's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 2	IP Fibre Devices LTD Large holder	Sold10b5-1 plan 2 parts	15,361	$85.64 average	$1.32M	0.2%	Form 4
Oct 2	Eugene A Scherbakov Director	Sold10b5-1 plan	3,048	$85.30	$260k	6.3%	Form 4
Sep 1 – 2	Valentin Gapontsev Trust I Large holder	Sold10b5-1 plan 3 parts	27,397	$75.42 average	$2.07M	0.4%	Form 4
Aug 26	John R Peeler Director	Bought 2 parts	2,710	$73.58 average	$199k	15%	Form 4
Aug 4 – 5	IP Fibre Devices LTD Large holder	Sold10b5-1 plan 5 parts	30,313	$95.74 average	$2.9M	0.5%	Form 4
Jul 31	IP Fibre Devices LTD Large holder	Sold10b5-1 plan 4 parts	27,000	$85.81 average	$2.32M	0.4%	Form 4
Jul 31	Eugene A Scherbakov Director	Sold10b5-1 plan 4 parts	1,524	$86.61 average	$132k	3.1%	Form 4
Jul 21	Valentin Gapontsev Trust I Large holder	Sold10b5-1 plan 4 parts	56,316	$102.31 average	$5.76M	0.8%	Form 4
Jun 29	IP Fibre Devices LTD Large holder	Sold10b5-1 plan 7 parts	65,700	$103.64 average	$6.81M	1.0%	Form 4
Jun 29	Angelo P Lopresti SVP, Secretary & Gen Counsel	Sold10b5-1 plan	1,000	$110.33	$110k	1.6%	Form 4
Jun 29	Eugene A Scherbakov Director	Sold10b5-1 plan 5 parts	1,524	$101.55 average	$155k	3.0%	Form 4
Jun 22	Tang Agnes Director	Sold10b5-1 plan 3 parts	1,511	$117.85 average	$178k	14%	Form 4
May 22	Timothy Pv Mammen SVP, Chief Financial Officer	SoldNo plan 2 parts	9,975	$119.81 average	$1.2M	12%	Form 4
May 14	Jeanmarie F. Desmond Director	SoldNo plan	1,690	$105.58	$178k	14%	Form 4
Mar 17	Mary E. Buttarazzi VP, Corp Controller and CAO	SoldNo plan	500	$116.22	$58k	9.5%	Form 4
Feb 20 – 24	IP Fibre Devices LTD Large holder	Sold10b5-1 plan 12 parts	64,167	$132.89 average	$8.53M	1.0%	Form 4
Feb 24	Eugene A Scherbakov Director	Sold10b5-1 plan 4 parts	2,700	$137.83 average	$372k	4.4%	Form 4
Feb 17	Valentin Gapontsev Trust I Large holder	Sold10b5-1 plan 21 parts	66,500	$130.84 average	$8.7M	1.0%	Form 4
Feb 2	Eric Meurice Director	Sold10b5-1 plan	750	$95.00	$71k	3.2%	Form 4
Jan 21	Angelo P Lopresti SVP, Secretary & Gen Counsel	Sold10b5-1 plan	1,500	$85.00	$128k	2.5%	Form 4
Jan 21	Eugene A Scherbakov Director	Sold10b5-1 plan 3 parts	2,700	$80.96 average	$219k	4.4%	Form 4
Jan 16 – 21	IP Fibre Devices LTD Large holder	Sold10b5-1 plan 6 parts	64,167	$80.22 average	$5.15M	1.0%	Form 4
Jan 15	Valentin Gapontsev Trust I Large holder	Sold10b5-1 plan 2 parts	7,952	$80.10 average	$637k	0.1%	Form 4
Jan 12 – 14	Valentin Gapontsev Trust I Large holder	Sold10b5-1 plan 7 parts	58,548	$76.93 average	$4.5M	0.9%	Form 4
Dec 22, 2025 – Dec 24, 2025	IP Fibre Devices LTD Large holder	Sold10b5-1 plan 7 parts	64,167	$74.94 average	$4.81M	1.0%	Form 4
Dec 23, 2025	Eugene A Scherbakov Director	Sold10b5-1 plan 2 parts	2,700	$74.44 average	$201k	4.2%	Form 4
Dec 15, 2025 – Dec 16, 2025	Valentin Gapontsev Trust I Large holder	Sold10b5-1 plan 4 parts	66,500	$77.40 average	$5.15M	1.0%	Form 4
Dec 9, 2025	Angelo P Lopresti SVP, Secretary & Gen Counsel	Sold10b5-1 plan	1,500	$85.07	$128k	2.4%	Form 4
Nov 25, 2025	Tang Agnes Director	Sold10b5-1 plan 2 parts	1,881	$76.75 average	$144k	18%	Form 4
Nov 24, 2025	Eugene A Scherbakov Director	Sold10b5-1 plan 2 parts	2,700	$76.03 average	$205k	4.0%	Form 4
Nov 21, 2025 – Nov 24, 2025	IP Fibre Devices LTD Large holder	Sold10b5-1 plan 6 parts	64,167	$75.41 average	$4.84M	0.9%	Form 4
Nov 18, 2025	Trevor Ness SVP, Chief Revenue Officer	Sold10b5-1 plan	1,681	$75.58	$127k	4.3%	Form 4
Nov 17, 2025 – Nov 18, 2025	Valentin Gapontsev Trust I Large holder	Sold10b5-1 plan 5 parts	66,500	$76.56 average	$5.09M	1.0%	Form 4
Nov 6, 2025	Eric Meurice Director	Sold10b5-1 plan	750	$92.00	$69k	3.2%	Form 4
Oct 27, 2025	Angelo P Lopresti SVP, Secretary & Gen Counsel	Sold10b5-1 plan	1,500	$87.13	$131k	2.4%	Form 4
Oct 21, 2025	Eugene A Scherbakov Director	Sold10b5-1 plan 2 parts	2,700	$87.64 average	$237k	3.8%	Form 4
Oct 17, 2025 – Oct 21, 2025	IP Fibre Devices LTD Large holder	Sold10b5-1 plan 7 parts	64,167	$87.00 average	$5.58M	0.9%	Form 4
Oct 20, 2025	Trevor Ness SVP, Sales & Strategic Bus Dev	Sold10b5-1 plan 3 parts	1,678	$87.00 average	$146k	4.1%	Form 4
Oct 13, 2025 – Oct 15, 2025	Valentin Gapontsev Trust I Large holder	Sold10b5-1 plan 10 parts	66,500	$83.64 average	$5.56M	0.9%	Form 4
Oct 7, 2025	Eric Meurice Director	Sold10b5-1 plan 2 parts	1,502	$89.66 average	$135k	6.2%	Form 4

Oct 210b5-1 plan
IP Fibre Devices LTD
Large holder · sold 15,361 at avg $85.64
$1.32M
0.2% of stake
Oct 210b5-1 plan
Eugene A Scherbakov
Director · sold 3,048 at $85.30
$260k
6.3% of stake
Sep 1 – 210b5-1 plan
Valentin Gapontsev Trust I
Large holder · sold 27,397 at avg $75.42
$2.07M
0.4% of stake
Aug 26
John R Peeler
Director · bought 2,710 at avg $73.58
$199k
15% of stake
Aug 4 – 510b5-1 plan
IP Fibre Devices LTD
Large holder · sold 30,313 at avg $95.74
$2.9M
0.5% of stake
Jul 3110b5-1 plan
IP Fibre Devices LTD
Large holder · sold 27,000 at avg $85.81
$2.32M
0.4% of stake
Jul 3110b5-1 plan
Eugene A Scherbakov
Director · sold 1,524 at avg $86.61
$132k
3.1% of stake
Jul 2110b5-1 plan
Valentin Gapontsev Trust I
Large holder · sold 56,316 at avg $102.31
$5.76M
0.8% of stake
Jun 2910b5-1 plan
IP Fibre Devices LTD
Large holder · sold 65,700 at avg $103.64
$6.81M
1.0% of stake
Jun 2910b5-1 plan
Angelo P Lopresti
SVP, Secretary & Gen Counsel · sold 1,000 at $110.33
$110k
1.6% of stake
Jun 2910b5-1 plan
Eugene A Scherbakov
Director · sold 1,524 at avg $101.55
$155k
3.0% of stake
Jun 2210b5-1 plan
Tang Agnes
Director · sold 1,511 at avg $117.85
$178k
14% of stake
May 22No plan
Timothy Pv Mammen
SVP, Chief Financial Officer · sold 9,975 at avg $119.81
$1.2M
12% of stake
May 14No plan
Jeanmarie F. Desmond
Director · sold 1,690 at $105.58
$178k
14% of stake
Mar 17No plan
Mary E. Buttarazzi
VP, Corp Controller and CAO · sold 500 at $116.22
$58k
9.5% of stake
Feb 20 – 2410b5-1 plan
IP Fibre Devices LTD
Large holder · sold 64,167 at avg $132.89
$8.53M
1.0% of stake
Feb 2410b5-1 plan
Eugene A Scherbakov
Director · sold 2,700 at avg $137.83
$372k
4.4% of stake
Feb 1710b5-1 plan
Valentin Gapontsev Trust I
Large holder · sold 66,500 at avg $130.84
$8.7M
1.0% of stake
Feb 210b5-1 plan
Eric Meurice
Director · sold 750 at $95.00
$71k
3.2% of stake
Jan 2110b5-1 plan
Angelo P Lopresti
SVP, Secretary & Gen Counsel · sold 1,500 at $85.00
$128k
2.5% of stake
Jan 2110b5-1 plan
Eugene A Scherbakov
Director · sold 2,700 at avg $80.96
$219k
4.4% of stake
Jan 16 – 2110b5-1 plan
IP Fibre Devices LTD
Large holder · sold 64,167 at avg $80.22
$5.15M
1.0% of stake
Jan 1510b5-1 plan
Valentin Gapontsev Trust I
Large holder · sold 7,952 at avg $80.10
$637k
0.1% of stake
Jan 12 – 1410b5-1 plan
Valentin Gapontsev Trust I
Large holder · sold 58,548 at avg $76.93
$4.5M
0.9% of stake
Dec 22, 2025 – Dec 24, 202510b5-1 plan
IP Fibre Devices LTD
Large holder · sold 64,167 at avg $74.94
$4.81M
1.0% of stake
Dec 23, 202510b5-1 plan
Eugene A Scherbakov
Director · sold 2,700 at avg $74.44
$201k
4.2% of stake
Dec 15, 2025 – Dec 16, 202510b5-1 plan
Valentin Gapontsev Trust I
Large holder · sold 66,500 at avg $77.40
$5.15M
1.0% of stake
Dec 9, 202510b5-1 plan
Angelo P Lopresti
SVP, Secretary & Gen Counsel · sold 1,500 at $85.07
$128k
2.4% of stake
Nov 25, 202510b5-1 plan
Tang Agnes
Director · sold 1,881 at avg $76.75
$144k
18% of stake
Nov 24, 202510b5-1 plan
Eugene A Scherbakov
Director · sold 2,700 at avg $76.03
$205k
4.0% of stake
Nov 21, 2025 – Nov 24, 202510b5-1 plan
IP Fibre Devices LTD
Large holder · sold 64,167 at avg $75.41
$4.84M
0.9% of stake
Nov 18, 202510b5-1 plan
Trevor Ness
SVP, Chief Revenue Officer · sold 1,681 at $75.58
$127k
4.3% of stake
Nov 17, 2025 – Nov 18, 202510b5-1 plan
Valentin Gapontsev Trust I
Large holder · sold 66,500 at avg $76.56
$5.09M
1.0% of stake
Nov 6, 202510b5-1 plan
Eric Meurice
Director · sold 750 at $92.00
$69k
3.2% of stake
Oct 27, 202510b5-1 plan
Angelo P Lopresti
SVP, Secretary & Gen Counsel · sold 1,500 at $87.13
$131k
2.4% of stake
Oct 21, 202510b5-1 plan
Eugene A Scherbakov
Director · sold 2,700 at avg $87.64
$237k
3.8% of stake
Oct 17, 2025 – Oct 21, 202510b5-1 plan
IP Fibre Devices LTD
Large holder · sold 64,167 at avg $87.00
$5.58M
0.9% of stake
Oct 20, 202510b5-1 plan
Trevor Ness
SVP, Sales & Strategic Bus Dev · sold 1,678 at avg $87.00
$146k
4.1% of stake
Oct 13, 2025 – Oct 15, 202510b5-1 plan
Valentin Gapontsev Trust I
Large holder · sold 66,500 at avg $83.64
$5.56M
0.9% of stake
Oct 7, 202510b5-1 plan
Eric Meurice
Director · sold 1,502 at avg $89.66
$135k
6.2% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch IPGP, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

Related stocks: Semiconductors & Related Devices

SMTCSemtech Corporation

ICHRIchor Holdings Ltd.

TET1 Energy Inc.

MTSIMACOM Technology Solutions Holdings, Inc.

ARRYArray Technologies Inc.

KLICKulicke & Soffa Industries, Inc.

ALGMAllegro MicroSystems, Inc.

SYNASynaptics Incorporated

Spot a number that looks wrong? Check it in IPGP's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

2 of 2 free stocks used today

Keep analysing IPGP

Create a free account and get 14 days of Premium: every stock and every tool.

Unlimited stocksQuality, fair value and dividends for 10,000+ stocks
Stock screenerFilter on quality, valuation and dividend safety
Portfolio trackerReal return, dividend calendar and portfolio quality
Editable DCFChange the assumptions and watch fair value move
Compare side by sideUp to 10 stocks in one table
Unlimited alertsPrice, P/E, Quality Score and yield

No card. Moves to Free after, unless you upgrade.

Already have an account?

Or come back tomorrow. Stocks on your watchlist are always free to view.