Director Rebecca Chambers reports stock option holdings in Alamar Biosciences (ALMR)

Rhea-AI Filing Summary

Alamar Biosciences director Rebecca Chambers reported her initial holdings of stock options in the company. The Form 3 shows a stock option covering 140,612 shares of Class B Common Stock with an exercise price of $7.60 per share and an expiration date of January 14, 2036.

According to the filing, 25% of the shares subject to the option vest on January 15, 2027, and the remaining shares vest in equal monthly installments over the following three years, contingent on her continued service with the company. This is a routine disclosure of an equity award rather than a new market transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Chambers Rebecca

Role null

Type	Security	Shares	Price	Value
holding	Stock Option (Right to Buy)	--	--	--

Holdings After Transaction: Stock Option (Right to Buy) — 140,612 shares (Direct, null)

Footnotes (1)

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Key Figures

Underlying option shares: 140,612 shares Exercise price: $7.60 per share Option expiration: January 14, 2036 +2 more

5 metrics

Underlying option shares 140,612 shares Underlying Class B Common Stock reported on Form 3

Exercise price $7.60 per share Stock Option (Right to Buy) for Class B Common Stock

Option expiration January 14, 2036 Expiration date of reported stock option

Initial vesting milestone 25% on January 15, 2027 Portion of option shares that vest on first vesting date

Ongoing vesting rate 1/48 monthly Remaining option shares vest monthly after initial cliff

Key Terms

Stock Option (Right to Buy), Class B Common Stock, vesting, continuous service

4 terms

Stock Option (Right to Buy) financial

"The Form 3 shows a stock option covering 140,612 shares of Class B Common Stock"

Class B Common Stock financial

"a stock option covering 140,612 shares of Class B Common Stock with an exercise price"

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

vesting financial

"25% of the shares subject to the option vest on January 15, 2027, and 1/48th of the shares vest monthly thereafter"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

continuous service financial

"shares vest monthly thereafter, subject to the reporting person's continuous service through each such vesting date"

Understanding Insider Trading Forms →

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
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1. Name and Address of Reporting Person^*

Chambers Rebecca

(Last) (First) (Middle)

C/O ALAMAR BIOSCIENCES, INC.

47071 BAYSIDE PARKWAY

(Street)

FREMONT CALIFORNIA 94538

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
04/16/2026

3. Issuer Name and Ticker or Trading Symbol
Alamar Biosciences, Inc. [ ALMR ]

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	(1)	01/14/2036	Class B Common Stock	140,612	$7.6	D

Explanation of Responses:

1. Twenty-five percent of the shares subject to the option vest on 1/15/2027, and 1/48th of the shares vest monthly thereafter, subject to the reporting person's continuous service through each such vesting date.

	/s/ Justin J. McAnear, Attorney-in-Fact	04/16/2026
	** 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 5 (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 3: SEC 1473 (03-26)

FAQ

What did the Alamar Biosciences (ALMR) Form 3 filed by Rebecca Chambers report?

The Form 3 reports director Rebecca Chambers’ initial beneficial ownership in Alamar Biosciences. It shows she holds a stock option for 140,612 shares of Class B Common Stock, providing a baseline of her equity position as she begins her service with the company.

How many Alamar Biosciences (ALMR) shares are covered by Rebecca Chambers’ stock option?

Rebecca Chambers’ reported stock option covers 140,612 shares of Alamar Biosciences Class B Common Stock. This figure represents the underlying shares tied to the option and reflects her potential future ownership if the option vests and is fully exercised.

What is the exercise price of Rebecca Chambers’ Alamar Biosciences (ALMR) stock option?

The exercise price of Rebecca Chambers’ stock option is $7.60 per share. This means she can buy each underlying share of Class B Common Stock at $7.60 once the option vests and remains outstanding through its expiration date in 2036.

When do Rebecca Chambers’ Alamar Biosciences (ALMR) stock options vest?

Twenty-five percent of the option shares vest on January 15, 2027, with 1/48 of the shares vesting monthly thereafter. Vesting is conditioned on her continuous service, meaning she must remain with Alamar Biosciences for the options to fully vest over time.

When do Rebecca Chambers’ Alamar Biosciences (ALMR) stock options expire?

The reported stock option held by Rebecca Chambers expires on January 14, 2036. After this expiration date, any unexercised portion of the option will lapse, so she must exercise vested shares before that date to acquire the underlying Class B Common Stock.

Does the Alamar Biosciences (ALMR) Form 3 show any open-market trades by Rebecca Chambers?

No open-market purchases or sales are indicated in this Form 3. It solely reports a stock option position granted to Rebecca Chambers, outlining the number of underlying shares, exercise price, vesting schedule, and expiration date, without showing any buy or sell transactions.