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Beneficial Ownership Report · SCHEDULE 13G

Silicom Ltd

SILCNASDAQEQUITYCurrent

Beneficial Ownership Report

Filed Sep 30, 2026Accepted Sep 30, 2026, 5:05 PM EDTFiling CIK 1350290Accession 0001104659-26-112395
Share

Structured filing — SCHEDULE 13G

primary_doc.xml

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Subject company

Company
SILICOM LTD.
Company CIK
0000916793
Street
14 Atir Yeda Street
City
Kfar-Sava
State / country code
L3
Postal code
4464323

Statement details

Security class
Ordinary Shares
Event date
09/23/2026
Rule designation
Rule 13d-1(c)

Reporting person 1

Name
Portolan Capital Management, LLC
Citizenship / organization
DE
Reporting person type
IA
Aggregate amount owned
288,787.00
Percent of class
5.06
Sole voting power
288,787.00
Shared voting power
0.00
Sole dispositive power
288,787.00
Shared dispositive power
0.00
Aggregate excludes certain shares
N

Reporting person 2

Name
George McCabe
Citizenship / organization
X1
Reporting person type
IN
Aggregate amount owned
288,787.00
Percent of class
5.06
Sole voting power
288,787.00
Shared voting power
0.00
Sole dispositive power
288,787.00
Shared dispositive power
0.00
Aggregate excludes certain shares
N

Item 1

Issuer

SILICOM LTD.

Principal executive office address

14 Atir Yeda Street, Kfar-Sava, L3 4464323

Item 2

Citizenship

Portolan Capital Management, LLC - DE Mr. McCabe - USA

Filing person

This statement is being filed with respect to the shares Common Stock of the Issuer beneficially owned (1) directly by Portolan Capital Management, LLC, a registered investment adviser, in its capacity as investment manager for various clients, and (2) indirectly by George McCabe, the Manager of Portolan Capital Management, LLC. Portolan Capital Management, LLC and Mr. McCabe are sometimes individually referred to herein as a "Reporting Person" and collectively as the "Reporting Persons."

Principal business or residence address

The address of the principal business office of each of the Reporting Persons is 2 International Place, FL 26, Boston, MA 02110.

Item 3

Not applicable indication

Y

Item 4

Percent of class

The information required by Item 4(b) is set forth in Row 11 of the cover page for each of the Reporting Persons and is incorporated by reference herein.

Amount beneficially owned

The information required by Item 4(a) is set forth in Row 9 of the cover page for each of the Reporting Persons and is incorporated by reference herein.

Sole voting power

The information required by Item 4(c) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated by reference herein.

Shared voting power

0

Sole dispositive power

The information required by Item 4(c) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated by reference herein.

Shared dispositive power

0

Item 5

Not applicable indication

Y

Item 6

Not applicable indication

N

Ownership on behalf of another person

Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Ordinary Shares of SILICOM LTD. No one person's interest in the Ordinary Shares of SILICOM LTD. is more than five percent of the total outstanding Ordinary Shares.

Item 7

Not applicable indication

Y

Item 8

Not applicable indication

Y

Item 9

Not applicable indication

Y

Item 10

Not applicable indication

N

Certifications

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

Signature 1

Reporting person
Portolan Capital Management, LLC
Signed
George McCabe
Title
George McCabe/Manager
Date
09/30/2026

Signature 2

Reporting person
George McCabe
Signed
George McCabe
Title
George McCabe
Date
09/30/2026

Company context

Current securities

Recent company filings

  1. 6-K filingOct 1, 2026
  2. 6-K filingSep 28, 2026
  3. 6-K filingSep 2, 2026
  4. 144 filingAug 27, 2026
  5. 144 filingAug 18, 2026

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