D & M Holding Inc. 401(k) Plan: Login, Facts & Contact Information

D & M Holding Inc. 401(k) Plan Facts

Plan name
DEGOLYER AND MACNAUGHTON EMPLOYEES' SAVINGS PLAN
Plan type
401(k) and profit sharing
Plan sponsor
D & M HOLDING INC.
Participants
168 (131 active employees)
Former employees with a balance
33
Plan assets
$119,119,802 at Dec 31, 2024
Average account balance
$721,938 across 165 accounts
Employer contributions
$3,810,448 in plan year 2024 (73% of all contributions)
Recordkeeper
The Vanguard Group, Inc.
Plan year
Jan 1, 2024 – Dec 31, 2024
Plan established
Sep 1, 1953
— Employer contributions— Automatic enrollment✓ Default investment for undecided participants✓ Participants choose their own investments— Self-directed brokerage window✓ Profit sharing— Company stock (ESOP)

Source: Form 5500 for plan year 2024 (Jan 1, 2024 – Dec 31, 2024), filed Oct 15, 2025. Public filing with the U.S. Department of Labor.

Money in and out in plan year 2024

  • $5.20 million went into the plan in contributions, $3.81 million of it from the employer (73%).
  • $9.57 million was paid out to participants.
  • Investment and other income added $13.2 million.
  • Administrative expenses were $155,762, about $944 per account.

How the D & M Holding Inc. 401(k) changed, 2019–2024

Plan yearParticipantsPlan assetsEmployer contributionsBenefits paid
2019206$126.8 million$5.65 million$15.2 million
2020210$124.2 million$4.76 million$19.0 million
2021201$134.5 million$4.74 million$12.1 million
2022194$102.6 million$3.88 million$35.3 million
2023176$110.4 million$3.85 million$10.2 million
2024168$119.1 million$3.81 million$9.57 million

D & M Holding Inc. 401(k) Contact Information

Phone
214-368-6391
Mailing address
5001 SPRING VALLEY ROAD, SUITE 800E, DALLAS TX 75244
Plan sponsor
D & M HOLDING INC.
Plan administrator
TRUSTEES OF DEGOLYER & MACNAUGHTON EMPLOYEE SAVINGS PLAN TRUST
Employer identification number (EIN)
75-0771709
Plan number
001

Questions about the D & M Holding Inc. 401(k)

Does D & M Holding Inc contribute to the 401(k)?

The plan does not report an employer matching arrangement on its Form 5500. It did report $3.81 million in employer contributions for plan year 2024.

Does the D & M Holding Inc 401(k) have automatic enrollment?

No. The plan does not report automatic enrollment; employees enroll themselves.

How many people are in the D & M Holding Inc 401(k) plan?

168 participants at the start of plan year 2024, 131 of them active employees, and 33 former employees who still had money in the plan.

What is the average 401(k) balance at D & M Holding Inc?

About $721,938 per account: $119.1 million in plan assets across 165 accounts with a balance at the end of plan year 2024.

Who manages the D & M Holding Inc 401(k) accounts?

Vanguard (listed on the filing as THE VANGUARD GROUP, INC.) is the plan's recordkeeper, which is where participants log in to see their balance.

I no longer work at D & M Holding Inc. How do I access my 401(k)?

Your account stays with Vanguard after you leave, so you can log in with the same credentials. If your balance was small, the plan may have rolled it into an IRA in your name. If you can't find it, Beagle can locate it for you.

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