CSP Inc. (CSPI) major holder adds 3,000 shares in open-market buys

Rhea-AI Filing Summary

CSP Inc. ten percent owner Joseph R. Nerges increased his direct stake through multiple open-market purchases of common stock. On February 24–25, he bought a combined 3,000 shares at prices around $8.69–$8.95 per share, bringing his direct holdings to 1,409,075 shares after the reported transactions.

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

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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^*

NERGES JOSEPH R

(Last) (First) (Middle)

1726 BUNDY ST

(Street)

SCRANTON PA 18508

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CSP INC /MA/ [ CSPI ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/24/2026

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

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

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

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	02/24/2026		P		500	A	$8.69	1,406,575	D
Common Stock	02/24/2026		P		500	A	$8.715	1,407,075	D
Common Stock	02/24/2026		P		500	A	$8.79	1,407,575	D
Common Stock	02/25/2026		P		200	A	$8.916	1,407,775	D
Common Stock	02/25/2026		P		300	A	$8.915	1,408,075	D
Common Stock	02/25/2026		P		200	A	$8.9537	1,408,275	D
Common Stock	02/25/2026		P		500	A	$8.8	1,408,775	D
Common Stock	02/25/2026		P		200	A	$8.75	1,408,975	D
Common Stock	02/25/2026		P		100	A	$8.7	1,409,075	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:

Remarks:

Entered into confidentiality agreement with CSP Inc. on October 8, 2024.

	/s/ Joseph R. Nerges	02/26/2026
	** 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.
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FAQ

What insider activity did CSPI report for Joseph R. Nerges on this Form 4?

The Form 4 shows Joseph R. Nerges, a ten percent owner of CSPI, bought 3,000 common shares in open-market transactions. These purchases occurred over February 24–25 at prices just under $9 per share, increasing his direct ownership stake in the company.

How many CSPI shares did Joseph R. Nerges buy and at what prices?

Joseph R. Nerges bought a total of 3,000 CSPI common shares across nine trades. Reported purchase prices ranged from about $8.69 to $8.95 per share, reflecting several small open-market buys rather than a single large block transaction over two trading days.

What is Joseph R. Nerges’s CSPI ownership after these insider purchases?

After the reported open-market purchases, Joseph R. Nerges directly owns 1,409,075 CSPI common shares. The Form 4 identifies him as a ten percent owner, and all reported transactions are coded as direct ownership, meaning the shares are held in his own name.

Were the CSPI insider transactions by Joseph R. Nerges buys or sells?

All reported CSPI insider transactions by Joseph R. Nerges on this Form 4 are purchases. Each entry is coded “P” for purchase and described as an open-market transaction, with no sales, dispositions, or derivative conversions disclosed in the transaction summary provided.

Over what dates did the CSPI insider purchases by Joseph R. Nerges occur?

The disclosed CSPI insider purchases by Joseph R. Nerges occurred on February 24 and February 25. On each date, he executed multiple small open-market trades in common stock, gradually adding up to 3,000 shares, according to the transaction details in the Form 4.