Telos (NYSE: TLS) EVP stock withheld to cover tax bill

Rhea-AI Filing Summary

TELOS CORP executive Mark D. Griffin reported routine equity activity related to compensation, not an open-market trade. Telos withheld 77,097 shares of common stock to satisfy his tax withholding obligation arising from the vesting of restricted stock units. These shares were not sold to any third party.

After this tax-withholding disposition, he directly holds 1,347,490 shares of Telos common stock and indirectly holds 21,352.280 shares through a 401(k) plan. The transactions reflect standard handling of equity-based compensation rather than discretionary buying or selling.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Griffin Mark D

Role EVP, Security Solutions

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	77,097	$4.20	$324K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,347,490 shares (Direct, null); Common Stock — 21,352.28 shares (Indirect, By 401k Plan)

Footnotes (1)

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Key Figures

Tax-withheld shares: 77,097 shares Withholding price: $4.20 per share Direct holdings after transaction: 1,347,490 shares +2 more

5 metrics

Tax-withheld shares 77,097 shares Common stock withheld to satisfy tax obligation from RSU vesting

Withholding price $4.20 per share Price used for 77,097-share tax-withholding disposition

Direct holdings after transaction 1,347,490 shares Common stock directly owned by Mark D. Griffin after withholding

Indirect 401(k) holdings 21,352.280 shares Common stock held indirectly in a 401(k) plan

Tax-withholding transactions 1 transaction Summary count of F-code tax-withholding disposition events

Key Terms

restricted stock units, tax withholding obligation, 401k Plan, tax-withholding disposition, +1 more

5 terms

restricted stock units financial

"tax withholding obligation resulting from the vesting of the restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligation financial

"to satisfy the reporting person's tax withholding obligation resulting from the vesting"

401k Plan financial

"nature_of_ownership": "By 401k Plan""

A 401(k) plan is an employer-sponsored retirement savings account that lets workers set aside part of their paycheck into investments, often with tax breaks and sometimes with matching contributions from the employer. Think of it as a workplace piggy bank that grows through employee contributions, optional company top-ups, and market returns; it matters to investors because it shapes household retirement security, drives large flows of money into public markets, and affects a company’s compensation costs and ability to attract and keep talent.

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Common Stock financial

"Telos withheld 77,097 shares of its common stock to satisfy"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 Insider Transactions: What Each Field Means →

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^*

Griffin Mark D

(Last) (First) (Middle)

C/O TELOS CORPORATION

19886 ASHBURN ROAD

(Street)

ASHBURN VIRGINIA 20147

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
TELOS CORP [ TLS ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Security Solutions

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/16/2026

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
Common Stock	05/16/2026		F		77,097(1)	D	$4.2	1,347,490	D
Common Stock								21,352.28	I	By 401k Plan

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

Explanation of Responses:

1. Telos withheld 77,097 shares of its common stock to satisfy the reporting person's tax withholding obligation resulting from the vesting of the restricted stock units. The reporting person did not sell any shares of Telos stock to a third party as part of this transaction.

Remarks:

	/s/ Helen M. Oh, attorney-in-fact	05/19/2026
	** 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)

FAQ

What insider transaction did Telos (TLS) EVP Mark Griffin report?

Mark Griffin reported a tax-related share disposition, not an open-market trade. Telos withheld 77,097 common shares to cover his tax obligation from vesting restricted stock units, while he retained a substantial direct and indirect ownership position in the company.

Did Telos EVP Mark Griffin sell TLS shares to the market?

He did not sell any shares to the market. Telos withheld 77,097 shares of its common stock solely to satisfy his tax withholding obligation from RSU vesting, and no shares were sold to any third party as part of this transaction.

How many Telos (TLS) shares were withheld for EVP Griffin’s taxes?

A total of 77,097 Telos common shares were withheld. The company used these shares to satisfy Mark Griffin’s tax withholding obligation tied to the vesting of restricted stock units, a common mechanism for handling equity-compensation taxes.

What are Mark Griffin’s Telos share holdings after the reported transactions?

Following the reported activity, Mark Griffin directly holds 1,347,490 Telos common shares. He also indirectly holds 21,352.280 additional shares through a 401(k) plan, reflecting both personal and retirement-plan ownership interests in the company.

What does transaction code F mean in the Telos (TLS) insider report?

Transaction code F indicates shares were disposed of to cover obligations like taxes or exercise costs. In this case, 77,097 Telos shares were withheld to satisfy Mark Griffin’s tax liability from RSU vesting, rather than being sold on the open market.