Telos (TLS) EVP Mark Griffin receives stock award, shares withheld for taxes

Rhea-AI Filing Summary

Telos Corp executive Mark D. Griffin reported routine equity compensation activity involving company stock. On March 18, 2026, he received a grant of 113,716 shares of common stock as a stock award. On March 19, 2026, 51,286 shares were withheld by Telos at a price of $4.27 per share to cover his tax obligations from the vesting of restricted stock units, and the footnote clarifies that no shares were sold to any third party as part of this transaction.

Following these transactions, Griffin directly owned 1,424,587 shares of Telos common stock, and he also had an additional indirect holding of 21,352.28 shares through a 401(k) plan.

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

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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)
03/18/2026

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	03/18/2026		A		113,716	A	$0	1,475,873	D
Common Stock	03/19/2026		F		51,286(1)	D	$4.27	1,424,587	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 51,286 shares of its common stock to satisfy the reporting person's tax withholding obligation resulting from the vesting of 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	03/20/2026
	** 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 transactions did Telos (TLS) executive Mark D. Griffin report?

Mark D. Griffin reported a stock award and related tax withholding. He received 113,716 Telos common shares as a grant, then 51,286 shares were withheld to satisfy tax obligations from restricted stock unit vesting, with no shares sold to third parties.

Did Telos (TLS) executive Mark D. Griffin sell any shares in this Form 4?

He did not sell shares to the market. Telos withheld 51,286 shares to cover his tax liability from restricted stock unit vesting, and the filing’s footnote explicitly states no Telos shares were sold to any third party in this transaction.

How many Telos (TLS) shares does Mark D. Griffin own after these transactions?

After the reported transactions, Mark D. Griffin directly owned 1,424,587 Telos common shares. He also had an additional 21,352.28 shares held indirectly through a 401(k) plan, according to the Form 4 holding entry.

What was the size of the Telos (TLS) stock grant to Mark D. Griffin?

He received a grant of 113,716 Telos common shares. The grant was recorded at a price of zero per share, reflecting an equity award rather than a market purchase, and increased his direct holdings before subsequent tax withholding.

Why were 51,286 Telos (TLS) shares withheld from Mark D. Griffin?

Telos withheld 51,286 shares to satisfy Mark D. Griffin’s tax withholding obligation from the vesting of restricted stock units. This is a non-market transaction, where shares are retained by the company instead of him selling stock to pay taxes.

How should investors interpret the tax withholding in Telos (TLS) Form 4?

The tax withholding reflects routine handling of equity compensation. Shares were withheld by Telos to cover taxes from restricted stock unit vesting, without open-market sales, so it primarily indicates standard compensation and tax treatment rather than a discretionary buy or sell decision.