Charlie Bass (SCKT) discloses 43.6% Socket Mobile stake and new $400k note

Rhea-AI Filing Summary

Charlie Bass, Chair of the Board of Socket Mobile, Inc., filed an amended ownership report showing beneficial ownership of 5,030,216 shares of Common Stock, representing 43.6% of the 11,549,972 shares deemed outstanding as of March 27, 2026.

His position includes shares held by the Bass Trust, stock options exercisable within 60 days, and shares issuable upon conversion of several convertible subordinated secured promissory notes, including a new $400,000 2026 Note bearing 10% annual interest and convertible into up to 444,444 shares. During November 2025, the Bass Trust made multiple open-market purchases, and in early 2026 it received restricted stock and stock option grants, all reported as held for investment purposes.

Insights

Equity ownership & governance analyst

Filing updates a very large insider stake and new convertible note financing.

Charlie Bass now reports beneficial ownership of 5,030,216 Socket Mobile shares, or 43.6% of the 11,549,972 shares deemed outstanding. This reflects common shares, in-the-money options and multiple convertible subordinated secured promissory notes held via the Bass Trust.

The new $400,000 2026 Note, issued on March 27, 2026, carries a 10% annual interest rate, matures on March 27, 2029, and is convertible into up to 444,444 shares. This adds another potential equity issuance on top of prior 2020–2025 notes, though actual dilution depends on future conversion decisions.

Open-market purchases in November 2025 and equity grants in early 2026 indicate continued capital commitment by the Bass Trust. Future company filings that discuss the 2026 Note and prior notes may provide more detail on how and when any conversions occur.

Key Figures

Beneficial ownership: 5,030,216 shares Ownership percentage: 43.6% Shares deemed outstanding: 11,549,972 shares +5 more

8 metrics

Beneficial ownership 5,030,216 shares Common Stock beneficially owned by Charlie Bass

Ownership percentage 43.6% Percent of 11,549,972 shares deemed outstanding

Shares deemed outstanding 11,549,972 shares For SEC Rule 13d-3 ownership calculation

Shares outstanding 8,222,958 shares Common Stock outstanding as of March 27, 2026

Convertible and option shares 3,327,014 shares Issuable from 2020–2026 notes and options in calculation

2026 Note principal $400,000 Convertible subordinated secured promissory note bought March 27, 2026

2026 Note conversion shares 444,444 shares Maximum shares of Common Stock issuable upon conversion

Note interest rate 10% per year Annual interest on the 2026 convertible note

Key Terms

beneficial owner, convertible subordinated secured promissory note, Schedule 13D, revocable trust, +1 more

5 terms

beneficial owner financial

"Mr. Bass is the beneficial owner of 5,030,216 shares of Common Stock"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

convertible subordinated secured promissory note financial

"purchased a convertible subordinated secured promissory note from the Issuer"

Schedule 13D financial

"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.

revocable trust financial

"entered into a revocable trust agreement for estate planning purposes"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

stock options financial

"stock options to purchase an aggregate of 159,000 shares of Common Stock"

Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 7)

SOCKET MOBILE, INC.

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

83368E200

(CUSIP Number)

Jason Wu
40675 Encyclopedia Circle,
Fremont, CA, 94538
5109333085

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

03/27/2026

(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 Number(s): 83368E200

1

Name of reporting person

BASS CHARLIE

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

5

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

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 5,030,216.00
8	Shared Voting Power
9	Sole Dispositive Power 5,030,216.00
10	Shared Dispositive Power

11

Aggregate amount beneficially owned by each reporting person

5,030,216.00

12

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

13

Percent of class represented by amount in Row (11)

43.6 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common Stock, par value $0.001 per share
(b)	Name of Issuer: SOCKET MOBILE, INC.
(c)	Address of Issuer's Principal Executive Offices: 40675 ENCYCLOPEDIA CIRCLE, FREMONT, CALIFORNIA , 94538-2475.
Item 1 Comment: This Amendment relates to shares of Common Stock of the Issuer, whose principal executive offices are located at 40675 Encyclopedia Cir., Fremont, CA 94538.
Item 2.	Identity and Background
(a)	Charlie Bass
(b)	The business address of Mr. Bass is c/o Socket Mobile, Inc., 40675 Encyclopedia Cir., Fremont, CA 94538.
(c)	Mr. Bass is Chairman of the Board of Directors of the Issuer, whose business address is 40675 Encyclopedia Cir., Fremont, CA 94538.
(d)	No.
(e)	No.
(f)	United States
Item 3.	Source and Amount of Funds or Other Consideration
	The ownership of shares of Common Stock previously reported in the Original Schedule 13D is hereby amended to include the following transactions: All of the Common Stock acquired by the Reporting Persons during the period covered by this Amendment, as listed in Item 5 below, was acquired in open market purchases for a total of approximately $110,286.27 using personal funds of Mr. Bass or as grants of restricted stock from the Company in connection with Mr. Bass' election to and service on the Board of Directors of the Company. 2026 Convertible Note Financing On March 27, 2026, the Bass Trust purchased a convertible subordinated secured promissory note from the Issuer in the principal amount of $400,000 (the "2026 Note"). The 2026 Note carries a 10% annual interest rate and has a maturity date of March 27, 2029. The principal amount of the 2026 Note is convertible at the option of the holder to a maximum of 444,444 shares of Common Stock at any time on or prior to the maturity date. The Bass Trust used its own funds to purchase the 2026 Note. Mr. Bass is the beneficial owner of the 2026 Note and has the sole power to dispose of or direct the disposition of the 2026 Note.
Item 4.	Purpose of Transaction
	The acquisition of common stock and the 2026 Note by the Bass Trust was for investment purposes only. At the time of the filing of this Amendment, Mr. Bass has no present plans or proposals that relate to or would result in any of the matters described in subparagraphs (a) through (j) of Item 4 of the instructions to Schedule 13D. Mr. Bass is a director of the Issuer, and this Amendment, the disclosures herein, and any future amendments hereto are not intended to, and do not, make disclosures with respect to transactions in which the Issuer may engage to which Mr. Bass is not a party or other matters that Mr. Bass may learn of or be involved with in his capacity as a director of the Issuer.
Item 5.	Interest in Securities of the Issuer
(a)	Mr. Bass is the beneficial owner of 5,030,216 shares of Common Stock consisting of 1,703,202 shares of Common Stock held by the Bass Trust, up to 684,931 shares of Common Stock issuable to the Bass Trust upon conversion of the convertible subordinated secured promissory note purchased by the Bass Trust on August 31, 2020 (the 2020 Note), up to 1,119,402 shares of Common Stock issuable to the Bass Trust upon conversion of the convertible subordinated secured promissory note purchased by the Bass Trust on May 26, 2023 (the 2023 Note), up to 551,759 shares of Common Stock issuable to the Bass Trust upon conversion of the convertible subordinated secured promissory note purchased by the Bass Trust on August 21, 2024 (the 2024 Note), up to 467,289 shares of Common Stock issuable to the Bass Trust upon conversion of the convertible subordinated secured promissory note purchased by the Bass Trust on May 30, 2025 (the 2025 Note), up to 444,444 shares of Common Stock issuable to Bass Trust upon conversion of the 2026 Note, and up to 59,198 shares of Common Stock issuable pursuant to stock options held by Mr. Bass that are exercisable within 60 days of the date of this Amendment. Such shares of Common Stock, collectively, represent 43.6% of the 11,549,972 shares of Common Stock deemed to be outstanding for the purpose of computing the percentage of outstanding shares of Common Stock owned by Mr. Bass pursuant to SEC Rule 13d-3d1i, and which consists of 8,222,958 shares of Common Stock outstanding as of March 27, 2026, 3,327,014 shares of Common Stock issuable upon conversion of the 2020 Note, 2023 Note, 2024 Note, 2025 Note, 2026 Note and exercise of the stock options described above.
(b)	Mr. Bass has sole power to vote and dispose of all shares of Common Stock beneficially owned by Mr. Bass.
(c)	From the Schedule 13D/A filed on October 15, 2025, through the date of this filing, the following transactions have taken place: Direct Beneficial Owner Type of Security Purchase Price of Security Date Type of Activity Shares 11/3/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 0.9837 11/4/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.0346 11/5/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.0434 11/6/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.0758 11/7/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.0938 11/10/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.0925 11/11/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.0955 11/12/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.1115 11/13/2025 Bass Trust Open Market Purchase Common Stock 3,801 $ 1.1670 11/14/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.2370 11/17/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.2519 11/18/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.2410 11/19/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.2427 11/20/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.2100 11/21/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.2386 11/24/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.2551 11/25/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.2953 11/26/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.3349 11/28/2025 Bass Trust Open Market Purchase Common Stock 5,000 $ 1.3328 2/4/2026 Bass Trust Grant Common Stock 6,250 n/a 2/27/2026 Bass Trust Grant Stock Option 16,000 $ 1.00
(d)	Not applicable.
(e)	Not applicable.
Item 6.	Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
	Mr. Bass has entered into a revocable trust agreement for estate planning purposes that governs his beneficial ownership and voting and dispositive power over the holdings of the Bass Trust. Pursuant to the revocable trust agreement, Mr. Bass may also revoke the trust at his sole discretion. Mr. Bass currently holds stock options to purchase an aggregate of 159,000 shares of Common Stock, of which options to purchase 69,188 shares are exercisable within 60 days of the date of this filing.
Item 7.	Material to be Filed as Exhibits.
	Form of Secured Subordinated Convertible Note, issued March 27, 2026 (incorporated by reference to Exhibit 10.1 of the Issuer's Current Report on Form 8-K filed on March 30, 2026)

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.

BASS CHARLIE

Signature:	/s/ Charlie Bass
Name/Title:	Charlie Bass/Chair of the Board
Date:	03/31/2026

FAQ

How many Socket Mobile (SCKT) shares does Charlie Bass beneficially own?

Charlie Bass beneficially owns 5,030,216 shares of Socket Mobile Common Stock. This total includes shares held by the Bass Trust, stock options exercisable within 60 days, and shares issuable upon conversion of several convertible notes, representing 43.6% of 11,549,972 shares deemed outstanding.

What percentage of Socket Mobile (SCKT) does Charlie Bass control according to this amendment?

According to the amendment, Charlie Bass’ beneficial ownership represents 43.6% of the 11,549,972 Socket Mobile shares deemed outstanding. That percentage is calculated under SEC Rule 13d-3, including outstanding shares plus those issuable from convertible notes and exercisable options he controls.

What are the key terms of the 2026 convertible note Bass Trust bought from Socket Mobile (SCKT)?

The Bass Trust purchased a $400,000 convertible subordinated secured promissory note on March 27, 2026. It bears 10% annual interest, matures on March 27, 2029, and is convertible at the holder’s option into up to 444,444 shares of Common Stock.

How many Socket Mobile (SCKT) shares are currently outstanding in this filing?

The filing states that 8,222,958 shares of Socket Mobile Common Stock were outstanding as of March 27, 2026. For ownership calculations, a total of 11,549,972 shares is deemed outstanding, adding 3,327,014 shares issuable from convertible notes and stock options.

What recent stock transactions did the Bass Trust report for Socket Mobile (SCKT)?

Between November 3 and November 28, 2025, the Bass Trust made multiple open-market purchases, often in 5,000-share blocks, at prices around $0.98–$1.33 per share. In February 2026, it also received 6,250 restricted shares and a grant of 16,000 stock options at $1.00.

What stock options related to Socket Mobile (SCKT) does Charlie Bass hold?

Charlie Bass holds options to purchase an aggregate of 159,000 Socket Mobile shares. Within this total, options to buy 69,188 shares are exercisable within 60 days of the filing date, and 59,198 of those exercisable shares are included in his reported beneficial ownership.