Silicom chair reports 5.7% ownership stake

Silicom Ltd.'s Executive Chairman, Avinoam Eizenman, has filed a Schedule 13D reporting a 5.70% beneficial ownership stake in the company’s ordinary shares.

Rhea-AI Filing Summary

Silicom Ltd.'s Executive Chairman, Avinoam Eizenman, has filed a Schedule 13D reporting a 5.70% beneficial ownership stake in the company’s ordinary shares. He beneficially owns 327,559 ordinary shares, based on 5,706,142 shares outstanding as of December 31, 2025.

The position includes 285,059 shares held directly, 12,500 Restricted Stock Units and 30,000 stock options that will vest or become exercisable within 60 days. Eizenman states the holdings are for investment and in connection with his role, with no current plans for major corporate actions, while reserving the right to buy or sell shares in the future.

Key Figures

Beneficial ownership: 327,559 ordinary shares Ownership percentage: 5.70% of ordinary shares Shares outstanding: 5,706,142 ordinary shares +5 more

8 metrics

Beneficial ownership 327,559 ordinary shares Reported beneficially owned by Avinoam Eizenman as of Schedule 13D

Ownership percentage 5.70% of ordinary shares Portion of Silicom’s outstanding ordinary shares held beneficially

Shares outstanding 5,706,142 ordinary shares Outstanding as of December 31, 2025, per Silicom financial statements

Directly held shares 285,059 ordinary shares Ordinary shares held directly by Avinoam Eizenman

RSUs vesting 12,500 RSUs Restricted Stock Units scheduled to vest within the next 60 days

Options exercisable 30,000 options Stock options to purchase ordinary shares exercisable within 60 days

Sole voting power 327,559 shares Shares over which Eizenman has sole voting power

Event date 04/15/2026 Date of event triggering Schedule 13D filing requirement

Key Terms

Schedule 13D, Restricted Stock Units (RSUs), sole voting power, equity incentive plans, +1 more

5 terms

Schedule 13D regulatory

"If the filing person has previously filed a statement on Schedule 13G to report the acquisition"

A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.

Restricted Stock Units (RSUs) financial

"equity compensation awards, including stock options and Restricted Stock Units (RSUs), granted by the Issuer"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

sole voting power regulatory

"Sole Voting Power 327,559.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

equity incentive plans financial

"options and RSUs granted pursuant to the Issuer's equity incentive plans"

Equity incentive plans are company programs that pay employees, executives, or directors with company stock, stock options, or share units instead of or in addition to cash, aiming to align their interests with shareholders—like giving team members a stake in the house they help build. For investors this matters because such plans can motivate better company performance but also dilute existing ownership and increase reported compensation costs, so they affect future earnings, voting power, and share value.

Rule 10b5-1 trading plans regulatory

"including, without limitation, any Rule 10b5-1 trading plans, voting agreements, or pledges"

Rule 10b5-1 trading plans are written, pre-arranged instructions that allow company insiders (such as executives or directors) to automatically buy or sell their company's stock at specified times or under set conditions, like a standing instruction or automated thermostat for trades. They matter to investors because these plans provide a legal defense against insider‑trading accusations and create predictable insider trading patterns that can help signal whether sales are routine portfolio management or potentially meaningful to the company’s outlook.

FAQ

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

What ownership stake did Avinoam Eizenman disclose in Silicom (SILC)?

Avinoam Eizenman disclosed beneficial ownership of 327,559 Silicom ordinary shares, representing approximately 5.70% of the company’s outstanding shares. This percentage is calculated against 5,706,142 ordinary shares outstanding as of December 31, 2025, based on Silicom’s filed consolidated financial statements.

How is Avinoam Eizenman’s 327,559-share stake in Silicom (SILC) composed?

The 327,559 ordinary shares include 285,059 shares held directly, 12,500 Restricted Stock Units scheduled to vest within 60 days, and 30,000 stock options that will become exercisable within 60 days. All these components are counted as beneficial ownership under Schedule 13D rules.

Why did Avinoam Eizenman file a Schedule 13D for Silicom (SILC)?

He filed Schedule 13D because his beneficial ownership exceeded 5% of Silicom’s ordinary shares, driven by RSUs and options vesting within 60 days. Crossing this 5% threshold triggers a reporting obligation, requiring disclosure of his holdings, intentions, and background information to the market.

Does Avinoam Eizenman have plans to change control or strategy at Silicom (SILC)?

The filing states he currently has no plans or proposals relating to actions listed in Item 4, such as mergers, reorganizations or control changes. However, he may buy more shares, sell shares, or change intentions later, subject to market conditions and applicable insider trading policies.

What is the role of Avinoam Eizenman at Silicom (SILC)?

Avinoam Eizenman serves as Executive Chairman of Silicom’s Board of Directors. His stake combines investment and compensation-related holdings, including equity awards granted under Silicom’s shareholder-approved equity incentive plans for his services as an officer of the company.

Did Avinoam Eizenman trade Silicom (SILC) shares in the 60 days before the filing?

The disclosure states that during the 60 days preceding the filing date, Avinoam Eizenman did not conduct any transactions in Silicom securities. His beneficial ownership increase above 5% is attributed to RSUs and options scheduled to vest or become exercisable within 60 days, not recent market trades.

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

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Accepted by SEC EDGAR 04/20/2026 - 06:01 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

Silicom Ltd.

(Name of Issuer)

Ordinary Shares

(Title of Class of Securities)

(CUSIP Number)

Avinoam Eizenman
14 Atir Yeda,
Kfar Sava, L3, 4464323
972-9-764-4555

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

04/15/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP No.

1

Name of reporting person

Eizenman Avinoam

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

PF, OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

ISRAEL

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 327,559.00
8	Shared Voting Power 0.00
9	Sole Dispositive Power 327,559.00
10	Shared Dispositive Power 0.00

11

Aggregate amount beneficially owned by each reporting person

327,559.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

5.70 %

14

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person:

(1) The percentages reported in this Schedule 13D are based upon 5,706,142 ordinary shares outstanding as of December 31, 2025 (according to the Consolidated Financial Statements for the year ending December 31, 2025, filed on March 16, 2026 by the Issuer as an Exhibit to its Current Report on Form 6-K).

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Ordinary Shares
(b)	Name of Issuer: Silicom Ltd.
(c)	Address of Issuer's Principal Executive Offices: 14 Atir Yeda ST, Kfar-Sava, ISRAEL , 4464323.
Item 2.	Identity and Background
(a)	Avinoam Eizenman
(b)	14 Atir Yeda ST., Kfar Sava, Israel, 4464323
(c)	Executive Chairman of the Board of Directors of the Issuer
(d)	The Reporting Person has not, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).
(e)	The Reporting Person has not, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.
(f)	Israel
Item 3.	Source and Amount of Funds or Other Consideration
	The securities reported herein were acquired by the Reporting Person through a combination of sources: (i) personal funds; (ii) shares acquired at the inception of the Issuer; and (iii) equity compensation awards, including stock options and Restricted Stock Units (RSUs), granted by the Issuer to the Reporting Person in connection with their services as an officer of the Issuer. No borrowed funds were used to purchase the securities.
Item 4.	Purpose of Transaction
	The Reporting Person's beneficial ownership increased above 5% because certain RSUs and options that he holds will vest over the next 60-days. The Reporting Person holds the securities described in Item 5 of this Schedule 13D for investment purposes and in connection with their ongoing role as an officer of the Issuer. The Reporting Person does not currently have any plans or proposals which relate to or would result in any of the actions specified in clauses (a) through (j) of Item 4 of Schedule 13D. However, as part of their ongoing evaluation of this investment and investment alternatives, the Reporting Person reserves the right, from time to time, to acquire additional securities of the Issuer, to dispose of some or all of the securities held by them, or to formulate other purposes, plans or proposals regarding the Issuer or its securities, subject to market conditions, the Issuer's insider trading policies, and applicable legal requirements
Item 5.	Interest in Securities of the Issuer
(a)	As of the date of filing of this Schedule 13D, the Reporting Person beneficially owns 327,559 Ordinary Shares, representing approximately 5.70% of the issued and outstanding Ordinary Shares. The 327,559 Ordinary Shares consist of (i) 285,059 Ordinary Shares held directly by the Reporting Person, (ii) 12,500 RSUs that will vest within the next 60 days, and (iii) 30,000 options to purchase Ordinary Shares that will become exercisable within the next 60 days.
(b)	Sole power to vote or direct the vote of 327,559 ordinary shares. Shared power to vote or direct the vote of 0 ordinary shares. Sole power to dispose or direct the disposition of 327,559 ordinary shares. Shared power to dispose of direct the disposition of 0 ordinary shares.
(c)	During the 60 days preceding the date of filing of this Schedule 13D, the Reporting Person has not conducted any transactions in the securities of the Issuer.
(d)	Not applicable.
(e)	Not applicable.
Item 6.	Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
	The Reporting Person holds options and RSUs granted pursuant to the Issuer's equity incentive plans. The terms of these equity awards are governed by the applicable plan documents and the individual award agreements between the Reporting Person and the Issuer. Such RSUs and stock options were granted pursuant to resolutions of the Issuer's shareholders and board of directors approving equity awards to the Reporting Person. Other than the foregoing, the Reporting Person is not a party to any contracts, arrangements, understandings, or relationships (legal or otherwise) with any person with respect to any securities of the Issuer, including, without limitation, any Rule 10b5-1 trading plans, voting agreements, or pledges.
Item 7.	Material to be Filed as Exhibits.
	None

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Eizenman Avinoam

Signature:	/s/ Avinoam Eizenman
Name/Title:	Executive Chairman Board of Directors
Date:	04/20/2026