Ichor director sells 20,000 shares under plan

A director of ICHR sold 20,000 ordinary shares on September 15, 2026 under a pre-arranged Rule 10b5-1 trading plan tied to tax obligations from vesting shares.

Rhea-AI Filing Summary

ICHOR HOLDINGS, LTD. (ICHR) director Iain MacKenzie reported open-market sales of a total of 20,000 Ordinary Shares on September 15, 2026. The trades were made under a Rule 10b5-1 Trading Plan adopted on May 19, 2026, entered into in part to provide liquidity for anticipated tax obligations associated with vesting of the shares, which vested upon the conclusion of his Advisory Agreement with the company.

Insider Trade Summary 10b5-1

Net Seller: 20,000 shares

Net Sell 2 txns

Insider MacKenzie Iain

Role Director

Sold 20,000 shs ($1.01M)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares, par value $0.0001 F1, F2	17,400	$50.52	$879K
Sale	Ordinary Shares, par value $0.0001 F1, F3	2,600	$51.59	$134K

Holdings After Transaction: Ordinary Shares, par value $0.0001 — 102,427 shares (Direct)

Footnotes (3)

1. F1. Represents number of shares sold under a Rule 10b5-1 Trading Plan adopted by the Reporting Person on May 19, 2026. The Reporting Person entered into the plan in part to provide liquidity for anticipated tax obligations associated with the vesting of the shares. The shares vested upon the conclusion of the Reporting Person's Advisory Agreement with the Issuer.
2. F2. The reported price is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $50.02 to $50.96 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnotes (2) and (3) to this Form 4.
3. F3. The reported price is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $51.04 to $51.95 per share.

Key Figures

Shares sold (first transaction): 17,400 shares Weighted average sale price (first transaction): $50.52 per share Shares sold (second transaction): 2,600 shares +3 more

6 metrics

Shares sold (first transaction) 17,400 shares Ordinary Shares sold on September 15, 2026 in the first reported sale

Weighted average sale price (first transaction) $50.52 per share Weighted average; individual trades ranged from $50.02 to $50.96

Shares sold (second transaction) 2,600 shares Ordinary Shares sold on September 15, 2026 in the second reported sale

Weighted average sale price (second transaction) $51.59 per share Weighted average; individual trades ranged from $51.04 to $51.95

Total shares sold 20,000 shares Aggregate of both September 15, 2026 sales by the director

Rule 10b5-1 plan adoption date May 19, 2026 Date MacKenzie adopted the trading plan used for these sales

Key Terms

Rule 10b5-1 Trading Plan, weighted average sales price, anticipated tax obligations, Advisory Agreement

4 terms

Rule 10b5-1 Trading Plan regulatory

"Represents number of shares sold under a Rule 10b5-1 Trading Plan adopted"

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 sales price financial

"The reported price is a weighted average sales price."

anticipated tax obligations financial

"provide liquidity for anticipated tax obligations associated with the vesting"

Advisory Agreement other

"The shares vested upon the conclusion of the Reporting Person's Advisory Agreement"

An advisory agreement is a written contract that spells out the responsibilities, fees and length of time a company hires an outside advisor — such as a financial, strategic or legal consultant — to provide ongoing guidance. For investors, it matters because the agreement sets costs, performance expectations, and any limits or conflicts that can affect a company’s strategy and financial results, similar to seeing the terms of a hired expert before judging their influence.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ICHR shares did director Iain MacKenzie sell in this Form 4?

Director Iain MacKenzie reported selling 20,000 Ordinary Shares of ICHR on September 15, 2026, in two separate open-market sale transactions disclosed in the Form 4.

At what prices were the ICHR shares sold in MacKenzie’s September 15, 2026 transactions?

MacKenzie sold 17,400 shares at a weighted average price of $50.52 (range $50.02–$50.96) and 2,600 shares at a weighted average price of $51.59 (range $51.04–$51.95), according to the Form 4 footnotes.

Were MacKenzie’s ICHR share sales made under a Rule 10b5-1 trading plan?

Yes. The Form 4 states the 20,000 shares sold on September 15, 2026 were under a Rule 10b5-1 Trading Plan adopted by Iain MacKenzie on May 19, 2026.

Why did Iain MacKenzie establish the Rule 10b5-1 plan for ICHR shares?

The filing explains MacKenzie entered into the Rule 10b5-1 plan in part to provide liquidity for anticipated tax obligations associated with the vesting of the shares reported in the Form 4.

What triggered the vesting of the ICHR shares sold by MacKenzie?

The Form 4 notes that the shares vested upon the conclusion of MacKenzie’s Advisory Agreement with Ichor Holdings, Ltd., and the reported sales relate to those vested shares.

What is Iain MacKenzie’s role at Ichor Holdings, Ltd. (ICHR)?

The Form 4 identifies Iain MacKenzie as a director of Ichor Holdings, Ltd. He is the reporting person for the September 15, 2026 share sale transactions.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/16/2026 - 04:16 PM Accepted by SEC EDGAR 09/16/2026 - 04:16 PM Learn about SEC filing dates

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^*

MacKenzie Iain

(Last) (First) (Middle)

C/O ICHOR HOLDINGS, LTD.

3185 LAURELVIEW CT

(Street)

FREMONT CALIFORNIA 94538

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ICHOR HOLDINGS, LTD. [ ICHR ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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
Ordinary Shares, par value $0.0001	09/15/2026		S		17,400(1)	D	$50.52(2)	105,027	D
Ordinary Shares, par value $0.0001	09/15/2026		S		2,600(1)	D	$51.59(3)	102,427	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. Represents number of shares sold under a Rule 10b5-1 Trading Plan adopted by the Reporting Person on May 19, 2026. The Reporting Person entered into the plan in part to provide liquidity for anticipated tax obligations associated with the vesting of the shares. The shares vested upon the conclusion of the Reporting Person's Advisory Agreement with the Issuer.

2. The reported price is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $50.02 to $50.96 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnotes (2) and (3) to this Form 4.

3. The reported price is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $51.04 to $51.95 per share.

Remarks:

	/s/ Ryan Barger by Power of Attorney	09/16/2026
	** 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)