Silicom VP engineering settles 2,000 RSUs

SILICOM LTD. vice president of engineering David Castiel reported an equity compensation event involving restricted stock units.

Rhea-AI Filing Summary

SILICOM LTD. vice president of engineering David Castiel reported an equity compensation event involving restricted stock units. On June 14, 2026, 2,000 restricted stock units vested in full and were settled into 2,000 ordinary shares, according to the footnotes.

The Form 4 shows this as an exercise or conversion of a derivative security, not an open-market purchase or sale. After the transactions, 2,000 ordinary shares and 8,000 restricted stock units are held indirectly by a trustee under the company’s equity incentive plan.

Insider Trade Summary

2,000 shares exercised/converted

Exercise 2 txns

Insider Castiel David

Role VP Engineering

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit	2,000	$0.00	$0.00
Exercise	Ordinary shares	2,000	$0.00	$0.00

Holdings After Transaction: Restricted Stock Unit — 8,000 contracts (Indirect, By Trustee); Ordinary shares — 2,000 shares (Indirect, By Trustee)

Footnotes (3)

1. F1. Each restricted stock unit (RSU) represents the right to receive at settlement one ordinary share. This transaction represents the settlement.
2. F2. These restricted stock units vested in full on the transaction date.
3. F3. These securities are held by a trustee pursuant to the Issuer's equity incentive plan.

Key Figures

RSUs settled: 2,000 units Shares received: 2,000 ordinary shares RSUs held after: 8,000 units +1 more

4 metrics

RSUs settled 2,000 units Restricted stock units vested and settled on June 14, 2026

Shares received 2,000 ordinary shares Shares received upon RSU settlement on June 14, 2026

RSUs held after 8,000 units Restricted stock units indirectly held by trustee after transaction

Exercise price $0.00 per unit Derivative exercise/conversion reported at zero price

Key Terms

Restricted Stock Unit, Ordinary shares, equity incentive plan, By Trustee

4 terms

Restricted Stock Unit financial

"Each restricted stock unit (RSU) represents the right to receive at settlement one ordinary share."

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

Ordinary shares financial

"Each restricted stock unit (RSU) represents the right to receive at settlement one ordinary share."

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

equity incentive plan financial

"These securities are held by a trustee pursuant to the Issuer's equity incentive plan."

An equity incentive plan is a program that gives employees, executives or directors the right to receive company stock or options to buy stock as part of their pay. Think of it as offering slices of future company profit to motivate people to boost long‑term performance; for investors it matters because it can align employee goals with shareholder value but also increases the number of shares outstanding, which can dilute existing ownership.

By Trustee financial

"These securities are held by a trustee pursuant to the Issuer's equity incentive plan."

FAQ

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

What insider transaction did SILICOM LTD. (SILC) disclose for David Castiel?

The company disclosed that VP Engineering David Castiel had 2,000 restricted stock units vest and settle into 2,000 ordinary shares. The transaction is reported as an exercise or conversion of a derivative security, rather than an open-market share purchase or sale.

Was the SILICOM (SILC) Form 4 transaction a stock purchase or sale?

The Form 4 does not report an open-market purchase or sale. Instead, it records the vesting and settlement of 2,000 restricted stock units into 2,000 ordinary shares, categorized as an exercise or conversion of a derivative security under equity compensation.

How many SILICOM (SILC) shares and RSUs does David Castiel hold after this filing?

After the reported transactions, the filing shows 2,000 ordinary shares held indirectly by a trustee and 8,000 restricted stock units also held indirectly. All are maintained through the issuer’s equity incentive plan structure.

How were the SILICOM (SILC) restricted stock units structured in this Form 4?

Each restricted stock unit represents the right to receive one ordinary share upon settlement. In this event, 2,000 RSUs vested in full on the transaction date and were settled into 2,000 ordinary shares held by a trustee.

How is ownership reported for the SILICOM (SILC) shares in this insider filing?

The shares and units are reported as indirect ownership, with the nature of ownership described as “By Trustee.” Footnotes note the securities are held by a trustee under SILICOM’s equity incentive plan, rather than directly by the executive.

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

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Accepted by SEC EDGAR 06/16/2026 - 09:40 AM EDT 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^*

Castiel David

(Last) (First) (Middle)

14 ATIR YEDA

(Street)

KFAR SAVA 4464323

(City) (State) (Zip)

ISRAEL

(Country)

2. Issuer Name and Ticker or Trading Symbol
SILICOM LTD. [ SILC ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/14/2026

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	06/14/2026		M		2,000	A	(1)	2,000	I	By Trustee(3)

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
Restricted Stock Unit	(1)	06/14/2026		M			2,000	(2)	(2)	Ordinary shares	2,000	$0.00	8,000	I	By Trustee(3)

Explanation of Responses:

1. Each restricted stock unit (RSU) represents the right to receive at settlement one ordinary share. This transaction represents the settlement.

2. These restricted stock units vested in full on the transaction date.

3. These securities are held by a trustee pursuant to the Issuer's equity incentive plan.

	/s/ Castiel David	06/16/2026
	** 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)