Dianne B.  Ralston net worth and biography

Dianne Ralston Biography and Net Worth

Insider of SLB

Dianne Ralston is the Chief Legal Officer of Schlumberger Limited, a leading provider of technology and services to the energy industry worldwide, a role she assumed in December 2020.

Before assuming the role, she was Executive Vice President and Chief Legal Officer of TechnipFMC, a global energy services and engineering company, and served as General Counsel of FMC Technologies and the time of its merger with Technip to form TechnipFMC.

She previously served as General Counsel of Weatherford International and has held executive leadership positions throughout the energy services sector including a prior tenure with Schlumberger of more than 15 years.

Ms. Ralston attended Texas A&M University and graduated with degrees in marketing and business analysis. She graduated from UHLC magna cum laude in 1994 and began her legal practice with Norton Rose Fulbright (formerly Fulbright & Jaworski) as a civil litigator.

She is married to Andrew Ralston, General Counsel of Ascend Performance Materials, and they have two daughters.

Dianne is a member of the UHLC Women of the Law Steering Committee.

What is Dianne B. Ralston's net worth?

The estimated net worth of Dianne B. Ralston is at least $7.69 million as of September 12th, 2025. Ms. Ralston owns 202,201 shares of SLB stock worth more than $7,691,726 as of December 4th. This net worth approximation does not reflect any other investments that Ms. Ralston may own. Additionally, Ms. Ralston receives an annual salary of $1,970,000.00 as Insider at SLB. Learn More about Dianne B. Ralston's net worth.

How old is Dianne B. Ralston?

Ms. Ralston is currently 57 years old. There are 7 older executives and no younger executives at SLB. The oldest executive at SLB is Mr. Olivier Le Peuch, CEO & Director, who is 60 years old. Learn More on Dianne B. Ralston's age.

What is Dianne B. Ralston's salary?

As the Insider of SLB Limited, Ms. Ralston earns $1,970,000.00 per year. There are 4 executives that earn more than Ms. Ralston. The highest earning executive at SLB is Mr. Olivier Le Peuch, CEO & Director, who commands a salary of $5,230,000.00 per year. Learn More on Dianne B. Ralston's salary.

How do I contact Dianne B. Ralston?

The corporate mailing address for Ms. Ralston and other SLB executives is PARKSTRAAT 83, THE HAGUE P7, 77056. SLB can also be reached via phone at (713) 513-2000 and via email at [email protected]. Learn More on Dianne B. Ralston's contact information.

Has Dianne B. Ralston been buying or selling shares of SLB?

Dianne B. Ralston has not been actively trading shares of SLB during the last quarter. Most recently, Dianne B. Ralston sold 39,727 shares of the business's stock in a transaction on Friday, September 12th. The shares were sold at an average price of $36.08, for a transaction totalling $1,433,350.16. Following the completion of the sale, the insider now directly owns 202,201 shares of the company's stock, valued at $7,295,412.08. Learn More on Dianne B. Ralston's trading history.

Who are SLB's active insiders?

SLB's insider roster includes Khaled Al Mogharbel (EVP), Ashok Belani (EVP), Katharina Beumelburg (Insider), Stephane Biguet (VP), Pierre Chereque (Director), Peter Coleman (Director), Patrick de La Chevardière (Director), Kevin Fyfe (VP), Hinda Gharbi (EVP), Howard Guild (CAO), Claudia Jaramillo (VP), Alexander Juden (General Counsel), Vijay Kasibhatla (Director), Saul Laureles (Director), Olivier Le Peuch (CEO & Director), Gérard Martellozo (VP), Abdellah Merad (EVP), Demosthenis Pafitis (CTO), Mark Papa (Director), Dianne Ralston (Insider), Aparna Raman (Insider), Carmen Rando Bejar (Chief People Officer), Gavin Rennick (Insider), and Patrick Schorn (EVP). Learn More on SLB's active insiders.

Are insiders buying or selling shares of SLB?

In the last year, insiders at the oil and gas company sold shares 13 times. They sold a total of 464,579 shares worth more than $19,081,870.58. The most recent insider tranaction occured on November, 26th when Director Peter John Coleman sold 5,500 shares worth more than $197,010.00. Insiders at SLB own 0.2% of the company. Learn More about insider trades at SLB.

Information on this page was last updated on 11/26/2025.

Dianne B. Ralston Insider Trading History at SLB

Transaction DateBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
9/12/2025Sell39,727$36.08$1,433,350.16202,201View SEC Filing Icon  
1/21/2025Sell43,161$43.96$1,897,357.56235,024View SEC Filing Icon  
12/23/2022Sell10,493$52.52$551,092.3623,379View SEC Filing Icon  
12/8/2021Sell12,885$31.04$399,950.40View SEC Filing Icon  
See Full Table

Dianne B. Ralston Buying and Selling Activity at SLB

This chart shows Dianne B Ralston's buying and selling at SLB by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

SLB Company Overview

SLB logo
Schlumberger Limited engages in the provision of technology for the energy industry worldwide. The company operates through four divisions: Digital & Integration, Reservoir Performance, Well Construction, and Production Systems. The company provides field development and hydrocarbon production, carbon management, and integration of adjacent energy systems; reservoir interpretation and data processing services for exploration data; and well construction and production improvement services and products. It also offers subsurface geology and fluids evaluation information; open and cased hole services; exploration and production pressure, and flow-rate measurement services; and pressure pumping, well stimulation, and coiled tubing equipment solutions. In addition, the company offers mud logging, directional drilling, measurement-while-drilling, and logging-while-drilling services, as well as engineering support services; supplies drilling fluid systems; designs, manufactures, and markets roller cone and fixed cutter drill bits; bottom-hole-assembly and borehole enlargement technologies; well cementing products and services; well planning, well drilling, engineering, supervision, logistics, procurement, and contracting of third parties, as well as drilling rig management solutions; and drilling equipment and services, as well as land drilling rigs and related services. Further, it provides artificial lift production equipment and optimization services; supplies packers, safety valves, sand control technology, and various intelligent well completions technology and equipment; designs and manufactures valves, chokes, actuators, and surface trees; and OneSubsea, an integrated solutions, products, systems, and services, including wellheads, subsea trees, manifolds and flowline connectors, control systems, connectors, and services. The company was formerly known as Socie´te´ de Prospection E´lectrique. Schlumberger Limited was founded in 1926 and is based in Houston, Texas.
Read More

Today's Range

Now: $38.04
Low: $37.41
High: $38.30

50 Day Range

MA: $35.35
Low: $31.75
High: $38.04

2 Week Range

Now: $38.04
Low: $31.11
High: $44.66

Volume

15,858,976 shs

Average Volume

12,745,030 shs

Market Capitalization

$56.83 billion

P/E Ratio

14.69

Dividend Yield

3.04%

Beta

0.73