IPG Photonics (IPGP) major holder IP Fibre Devices sells 30,313 shares under plan

Rhea-AI Filing Summary

IP Fibre Devices Ltd, a more-than-10% owner of IPG Photonics Corp, reported selling a total of 30,313 shares of common stock in multiple open market or private transactions on August 4–5, 2026. The sales were executed at weighted average prices between $95.18 and $98.71 per share, with individual trades occurring within the price ranges disclosed for each tranche. All transactions were carried out under a Rule 10b5-1 trading plan adopted on March 17, 2026.

Insider Trade Summary 10b5-1

Net Seller: 30,313 shares

Net Sell 5 txns

Insider IP FIBRE DEVICES LTD

Role 10% Owner

Sold 30,313 shs ($2.90M)

Type	Security	Shares	Price	Value
Sale	Common Stock F3, F1	11,912	$95.31	$1.14M
Sale	Common Stock F4, F1	1,325	$96.76	$128K
Sale	Common Stock F5, F1	4,324	$97.81	$423K
Sale	Common Stock F6, F1	550	$98.71	$54K
Sale	Common Stock F2, F1	12,202	$95.18	$1.16M

Holdings After Transaction: Common Stock — 6,405,989 shares (Direct)

Footnotes (6)

1. F1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 17, 2026.
2. F2. The reported transaction involves sale transactions ranging from $95.00 to $95.51 per share. The weighted average price per share was $95.18. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.
3. F3. The reported transaction involves sale transactions ranging from $95.03 to $95.99 per share. The weighted average price per share was $95.31. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.
4. F4. The reported transaction involves sale transactions ranging from $96.32 to $97.13 per share. The weighted average price per share was $96.76. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.
5. F5. The reported transaction involves sale transactions ranging from $97.39 to $98.19 per share. The weighted average price per share was $97.81. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.
6. F6. The reported transaction involves sale transactions ranging from $98.64 to $98.81 per share. The weighted average price per share was $98.71. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

Key Figures

Total shares sold: 30,313 shares August 4 sale tranche: 12,202 shares at $95.18 per share Largest August 5 tranche: 11,912 shares at $95.31 per share +3 more

6 metrics

Total shares sold 30,313 shares Aggregate common stock sales by IP Fibre Devices Ltd on August 4–5, 2026

August 4 sale tranche 12,202 shares at $95.18 per share Common stock sale on August 4, 2026 with weighted average price from footnote F2

Largest August 5 tranche 11,912 shares at $95.31 per share Common stock sale on August 5, 2026 with weighted average price from footnote F3

Additional August 5 tranches 4,324; 1,325; 550 shares Common stock sales on August 5, 2026 at weighted averages $97.81, $96.76, $98.71 per share

Overall price range $95.00–$98.81 per share Ranges of sale prices across all reported transactions from footnotes F2–F6

Rule 10b5-1 plan adoption date March 17, 2026 Date the trading plan governing these sales was adopted by IP Fibre Devices Ltd

Key Terms

Rule 10b5-1 trading plan, weighted average price per share, sale in open market or private transaction

3 terms

Rule 10b5-1 trading plan regulatory

"sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price per share financial

"The weighted average price per share was $95.18."

sale in open market or private transaction financial

"transaction_code_description: Sale in open market or private transaction"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/06/2026 - 04:11 PM Accepted by SEC EDGAR 08/06/2026 - 04:10 PM Learn about SEC filing dates

FAQ

Who sold IPG Photonics (IPGP) shares in this Form 4 filing?

The reporting person is IP Fibre Devices Ltd, identified as a more-than-10% owner of IPG Photonics Corp. It reported multiple sales of IPG Photonics common stock, rather than purchases, over a two-day period in August 2026.

How many IPG Photonics (IPGP) shares were sold and on which dates?

IP Fibre Devices Ltd sold a total of 30,313 shares of IPG Photonics common stock on August 4 and 5, 2026. The transactions were reported as several separate sale tranches across those two trading days.

At what prices were the IPG Photonics (IPGP) shares sold?

The sales occurred within disclosed ranges from $95.00 to $98.81 per share. Weighted average prices for each tranche were reported between $95.18 and $98.71 per share, as detailed in the transaction footnotes.

Were the IPG Photonics (IPGP) share sales under a Rule 10b5-1 plan?

Yes. All reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted by IP Fibre Devices Ltd on March 17, 2026, according to the filing’s footnotes and the trading-plan checkbox.

What types of transactions were reported for IPG Photonics (IPGP)?

All reported transactions were sales of common stock coded as “S,” described as sale in open market or private transaction. There were no derivative exercises, gifts, or acquisitions reported in this Form 4.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

IP FIBRE DEVICES LTD

(Last) (First) (Middle)

C/O IPG PHOTONICS CORPORATION

377 SIMARANO DRIVE

(Street)

MARLBOROUGH MASSACHUSETTS 01752

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
IPG PHOTONICS CORP [ IPGP ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/04/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/04/2026		S		12,202	D(1)	$95.18(2)	6,424,100	D
Common Stock	08/05/2026		S		11,912	D(1)	$95.31(3)	6,412,188	D
Common Stock	08/05/2026		S		1,325	D(1)	$96.76(4)	6,410,863	D
Common Stock	08/05/2026		S		4,324	D(1)	$97.81(5)	6,406,539	D
Common Stock	08/05/2026		S		550	D(1)	$98.71(6)	6,405,989	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 17, 2026.

2. The reported transaction involves sale transactions ranging from $95.00 to $95.51 per share. The weighted average price per share was $95.18. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

3. The reported transaction involves sale transactions ranging from $95.03 to $95.99 per share. The weighted average price per share was $95.31. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

4. The reported transaction involves sale transactions ranging from $96.32 to $97.13 per share. The weighted average price per share was $96.76. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

5. The reported transaction involves sale transactions ranging from $97.39 to $98.19 per share. The weighted average price per share was $97.81. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

6. The reported transaction involves sale transactions ranging from $98.64 to $98.81 per share. The weighted average price per share was $98.71. The Reporting Person undertakes to provide upon request by the SEC staff, the Issuer or a security holder of the Issuer, information regarding the number of shares sold at each separate price.

Remarks:

	/s/ Adam N. King, Attorney-in-Fact	08/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)