IRIDEX: Xinpo buys 266,068 shares in open market

Xinpo held the shares directly, while Lin Shih-Yao David, a ten percent owner, held an indirect interest through his control of the entity.

Rhea-AI Filing Summary

IRIDEX CORP (IRIX) is the issuer whose common stock Xinpo Venture Capital Co., Ltd. purchased in 30 reported open-market transactions totaling 266,068 shares. The purchases were indirectly attributable to Lin Shih-Yao David, a ten percent owner who controls Xinpo and has a pecuniary interest in its shares. One reported purchase was 50,000 shares at a weighted-average $0.8874 per share on June 27, 2025. No Rule 10b5-1 plan is reported for the purchases.

Insider Trade Summary

Net Buyer: 266,068 shares

Net Buy 30 txns

Insider Lin Shih-Yao David

Role 10% Owner

Bought 266,068 shs ($274K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F3, F1	20,000	$0.96	$19K
Purchase	Common Stock F1	3,885	$0.96	$4K
Purchase	Common Stock F1	3,033	$0.93	$3K
Purchase	Common Stock F1	69	$0.91	$62.79
Purchase	Common Stock F1	925	$0.94	$869.50
Purchase	Common Stock F2, F1	24,626	$0.8781	$22K
Purchase	Common Stock F1	20,000	$1.04	$21K
Purchase	Common Stock F1	115	$1.04	$119.60
Purchase	Common Stock F1	1,496	$1.04	$2K
Purchase	Common Stock F1	10,000	$1.09	$11K
Purchase	Common Stock F1	6,120	$1.06	$6K
Purchase	Common Stock F1	10,000	$1.08	$11K
Purchase	Common Stock F1	422	$1.04	$438.88
Purchase	Common Stock F1	10,000	$1.05	$11K
Purchase	Common Stock F1	100	$1.05	$105.00
Purchase	Common Stock F1	20,000	$1.52	$30K
Purchase	Common Stock F2, F1	20,000	$1.2782	$26K
Purchase	Common Stock F1	7,302	$1.00	$7K
Purchase	Common Stock F1	2,139	$0.975	$2K
Purchase	Common Stock F1	100	$0.88	$88.00
Purchase	Common Stock F1	253	$0.88	$222.64
Purchase	Common Stock F2, F1	50,000	$0.8874	$44K
Purchase	Common Stock F1	1,192	$0.95	$1K
Purchase	Common Stock F1	3,744	$0.9737	$4K
Purchase	Common Stock F1	101	$0.965	$97.47
Purchase	Common Stock F1	14,712	$0.9401	$14K
Purchase	Common Stock F1	1,582	$0.9401	$1K
Purchase	Common Stock F1	236	$0.9401	$221.86
Purchase	Common Stock F2, F1	15,755	$0.986	$16K
Purchase	Common Stock F1	18,161	$0.97	$18K

Holdings After Transaction: Common Stock — 836,252 shares (Indirect, By Xinpo)

Footnotes (3)

1. F1. The shares are held directly by Xinpo Venture Capital Co., Ltd. ("Xinpo") and indirectly by the Reporting Person. The Reporting Person controls the entire ownership interest in Xinpo, both directly and through family members, and has a pecuniary interest in the shares held by Xinpo.
2. F2. Each price marked with this footnote is a weighted average price for multiple open-market purchases on the stated date. The execution prices were as follows: 06/09/2025: $0.9832 to $0.9866, inclusive; 06/27/2025: $0.88 to $0.89, inclusive; 07/18/2025: $1.269236 to $1.28, inclusive; 11/14/2025: $0.87 to $0.88, inclusive. The Reporting Person undertakes to provide IRIDEX CORP, any security holder of IRIDEX CORP, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth above.
3. F3. The amount reported in Column 5 reflects the shares held through Xinpo following the reported transaction. As of the date of this report, the Reporting Person beneficially owns an aggregate of 1,738,238 shares of Common Stock, consisting of 1,186,809 shares held through Xinpo and 551,429 shares held through Novel Inspiration International Co., Ltd.("Novel Inspiration"). The Reporting Person is the sole officer, director and stockholder of Novel Inspiration.

Key Figures

Shares purchased: 266,068 shares Purchase count: 30 purchases Purchase: 50,000 shares +4 more

7 metrics

Shares purchased 266,068 shares Across 30 reported open-market purchases

Purchase count 30 purchases Reported transactions

Purchase 50,000 shares June 27, 2025; weighted-average price of $0.8874 per share

Weighted-average price $0.8874 per share 50,000 shares purchased June 27, 2025

Purchase 24,626 shares November 14, 2025; weighted-average price of $0.8781 per share

Weighted-average price $0.8781 per share 24,626 shares purchased November 14, 2025

Aggregate beneficial ownership 1,738,238 shares As of the report date; includes shares held through Xinpo and Novel Inspiration

Key Terms

open-market purchases, weighted average price, pecuniary interest, aggregate beneficial ownership

4 terms

open-market purchases financial

"open-market purchases of the Issuer's Common Stock"

Open-market purchases are when a company or institution buys its own shares or other securities using the public stock market rather than through a private deal. For investors this matters because such buying reduces the number of shares available, often boosting metrics like earnings per share and signaling management thinks the stock is undervalued, while also using cash that might otherwise fund growth or dividends — like a business buying back chips at the table to increase each remaining player's stake.

weighted average price financial

"weighted average price for multiple open-market purchases"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

pecuniary interest financial

"has a pecuniary interest in the shares held by Xinpo"

aggregate beneficial ownership regulatory

"Reporting Person's aggregate beneficial ownership"

FAQ

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

How many IRIX shares did Xinpo buy?

Xinpo Venture Capital Co., Ltd. purchased 266,068 IRIDEX common shares in 30 reported open-market transactions. The purchases were indirectly attributable to Lin Shih-Yao David, a ten percent owner. No Rule 10b5-1 plan is reported for the purchases.

What prices did Xinpo pay for IRIX shares?

Prices varied by transaction. Xinpo purchased 50,000 shares at a weighted-average $0.8874 per share on June 27, 2025, and 24,626 shares at a weighted-average $0.8781 per share on November 14, 2025.

How many IRIX shares did Lin Shih-Yao David beneficially own?

As of the report date, Lin Shih-Yao David beneficially owned an aggregate of 1,738,238 shares, including 1,186,809 held through Xinpo and 551,429 held through Novel Inspiration International Co., Ltd. He is Novel Inspiration's sole officer, director, and stockholder.

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

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Available on EDGAR 10/07/2026 - 06:08 AM Accepted by SEC EDGAR 10/07/2026 - 06:08 AM 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).

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^*

Lin Shih-Yao David

(Last) (First) (Middle)

VISTRA CORPORATE SERVICES CENTER

WICKHAMS CAY II

(Street)

ROAD TOWN TORTOLA VG1110

(City) (State) (Zip)

VIRGIN ISLANDS, BRITISH

(Country)

2. Issuer Name and Ticker or Trading Symbol
IRIDEX CORP [ IRIX ]

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)
03/25/2025

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	06/06/2025		P		18,161	A	$0.97	588,345	I	By Xinpo(1)
Common Stock	06/09/2025		P		15,755	A	$0.986(2)	604,100	I	By Xinpo(1)
Common Stock	06/12/2025		P		236	A	$0.9401	604,336	I	By Xinpo(1)
Common Stock	06/13/2025		P		1,582	A	$0.9401	605,918	I	By Xinpo(1)
Common Stock	06/16/2025		P		14,712	A	$0.9401	620,630	I	By Xinpo(1)
Common Stock	06/17/2025		P		101	A	$0.965	620,731	I	By Xinpo(1)
Common Stock	06/18/2025		P		3,744	A	$0.9737	624,475	I	By Xinpo(1)
Common Stock	06/23/2025		P		1,192	A	$0.95	625,667	I	By Xinpo(1)
Common Stock	06/27/2025		P		50,000	A	$0.8874(2)	675,667	I	By Xinpo(1)
Common Stock	06/30/2025		P		253	A	$0.88	675,920	I	By Xinpo(1)
Common Stock	07/01/2025		P		100	A	$0.88	676,020	I	By Xinpo(1)
Common Stock	07/09/2025		P		2,139	A	$0.975	678,159	I	By Xinpo(1)
Common Stock	07/11/2025		P		7,302	A	$1	685,461	I	By Xinpo(1)
Common Stock	07/18/2025		P		20,000	A	$1.2782(2)	705,461	I	By Xinpo(1)
Common Stock	07/29/2025		P		20,000	A	$1.52	725,461	I	By Xinpo(1)
Common Stock	10/14/2025		P		100	A	$1.05	725,561	I	By Xinpo(1)
Common Stock	10/16/2025		P		10,000	A	$1.05	735,561	I	By Xinpo(1)
Common Stock	10/20/2025		P		422	A	$1.04	735,983	I	By Xinpo(1)
Common Stock	10/21/2025		P		10,000	A	$1.08	745,983	I	By Xinpo(1)
Common Stock	10/22/2025		P		6,120	A	$1.06	752,103	I	By Xinpo(1)
Common Stock	10/27/2025		P		10,000	A	$1.09	762,103	I	By Xinpo(1)
Common Stock	11/06/2025		P		1,496	A	$1.04	763,599	I	By Xinpo(1)
Common Stock	11/07/2025		P		115	A	$1.04	763,714	I	By Xinpo(1)
Common Stock	11/12/2025		P		20,000	A	$1.04	783,714	I	By Xinpo(1)
Common Stock	11/14/2025		P		24,626	A	$0.8781(2)	808,340	I	By Xinpo(1)
Common Stock	11/20/2025		P		925	A	$0.94	809,265	I	By Xinpo(1)
Common Stock	11/25/2025		P		69	A	$0.91	809,334	I	By Xinpo(1)
Common Stock	11/26/2025		P		3,033	A	$0.93	812,367	I	By Xinpo(1)
Common Stock	11/28/2025		P		3,885	A	$0.96	816,252	I	By Xinpo(1)
Common Stock	12/01/2025		P		20,000	A	$0.96	836,252(3)	I	By Xinpo(1)

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 shares are held directly by Xinpo Venture Capital Co., Ltd. ("Xinpo") and indirectly by the Reporting Person. The Reporting Person controls the entire ownership interest in Xinpo, both directly and through family members, and has a pecuniary interest in the shares held by Xinpo.

2. Each price marked with this footnote is a weighted average price for multiple open-market purchases on the stated date. The execution prices were as follows: 06/09/2025: $0.9832 to $0.9866, inclusive; 06/27/2025: $0.88 to $0.89, inclusive; 07/18/2025: $1.269236 to $1.28, inclusive; 11/14/2025: $0.87 to $0.88, inclusive. The Reporting Person undertakes to provide IRIDEX CORP, any security holder of IRIDEX CORP, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth above.

3. The amount reported in Column 5 reflects the shares held through Xinpo following the reported transaction. As of the date of this report, the Reporting Person beneficially owns an aggregate of 1,738,238 shares of Common Stock, consisting of 1,186,809 shares held through Xinpo and 551,429 shares held through Novel Inspiration International Co., Ltd.("Novel Inspiration"). The Reporting Person is the sole officer, director and stockholder of Novel Inspiration.

Remarks:

This Form 4 is the second of three Form 4 filings being filed solely by the Reporting Person to report previously unreported open-market purchases of the Issuer's Common Stock by Xinpo from March 25, 2025 through March 30, 2026. The transactions are divided among three Form 4 filings because SEC's EDGAR filing system permits no more than 30 entries in Table I. The Reporting Person's holdings through Novel Inspiration are disclosed in the Explanation of Responses solely to reconcile the Reporting Person's aggregate beneficial ownership and do not represent transactions reported on this Form 4. This Form 4 is being filed late.

	/s/ Lin Shih-Yao David	10/07/2026
	** 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)