NEW ORLEANS — Stephen Baldwin testified Monday that no one asked him to invest any capital or join Kevin Costner in lobbying BP to use oil cleanup devices that the two actors were touting in the aftermath of the 2010 spill in the Gulf of Mexico.

But Baldwin said he used his celebrity to market and promote the oil-separating centrifuges while he also worked on a documentary about the nation's worst offshore oil spill.

"When you're famous, it opens doors and things like that," said Baldwin, the youngest brother of fellow actor Alec Baldwin

Baldwin and friend Spyridon Contogouris sued Costner and business partner Patrick Smith, claiming they were duped into selling their shares of the company that marketed the devices to BP and were cheated out of millions of dollars.

Baldwin, who received $500,000 for his shares, said he would have held out for much more if he had known the company had agreed to make an $18 million deposit on a $52 million order for 32 centrifuges.

Baldwin said he could have drummed up money to invest in their company, Ocean Therapy Solutions, if his partners had asked him, even though he was mired in bankruptcy proceedings at the time.

"I could have asked my big brother," Baldwin said.

On Friday, Costner said he never saw Baldwin contribute anything to the company and wondered what Baldwin was doing to help. Costner also recalled that Ocean Therapy Solutions CEO John Houghtaling had begged Baldwin and Contogouris not to sell their shares shortly before BP committed to buying the devices.

Baldwin described himself as a "door opener" for Houghtaling who gave radio and television interviews about the centrifuge technology in the weeks after the spill. Baldwin also recalled meeting with Plaquemines Parish Billy Nungesser to discuss the machines.

"My job was to market and promote," Baldwin said. "I had no responsibilities relevant to getting the devices in the water."

Like Costner, Baldwin said his primary interest in the deal was helping protect the coast from the spill.

"I wanted the machines to work," he said. "Make some money? Great. Not my first motivation."

Baldwin, whose testimony resumes Tuesday, said he had offered to give up 5 percent of his ownership stake in Ocean Therapy Solutions to appease Costner when the business partners first negotiated their ownership interests in the fledgling company. Costner had felt "undervalued" and appeared to be in a bad mood when the terms were first discussed, Baldwin recalled.

Baldwin and Contogouris claim they were deliberately excluded from a June 2010 dinner meeting at which BP executive Doug Suttles committed to ordering the centrifuges. Baldwin said he relied on Contogouris' advice when they sold their shares in the aftermath of that meeting.

"I trusted him unequivocally," he said, insisting he had no reason to believe a deal was imminent.

A lawyer for Smith asked Baldwin why he believed $500,000 was a fair return on his shares.

"Spyro told me it was," Baldwin said.

Contogouris sold his shares for $1.4 million.

BP deployed a few of the centrifuges on a barge in June 2010. The company capped the well the following month, and it was permanently sealed in September 2010.



Also on HuffPost:

Loading Slideshow...
  • Celebrity Photos: April 2014

    Khloe Kardashian did some shopping with her mother Kris in West Hollywood on April 24.

  • Celebrity Photos: April 2014

    Newlywed Jodie Foster grabbed a smoothie in LA on April 24.

  • Celebrity Photos: April 2014

    Emma Stone stopped by the "Good Morning America" studios in NYC on April 24, with her "The Amazing Spider-Man 2" co-stars Andrew Garfield and Jamie Foxx.

  • Celebrity Photos: April 2014

    Tori Spelling's husband Dean McDermott had a heated exchange with a paparazzo in LA on April 23

  • Celebrity Photos: April 2014

    Jessica Alba landed in NYC on April 23.

  • Celebrity Photos: April 2014

    Rumer Willis attended the 5th Annual Elle Women in Music Celebration presented by CUSP by Neiman Marcus in Hollywood, Calif. Hosted by Elle Editor-in-Chief Robbie Myers, the April 22 event featured performances by Sarah McLachlan, Angel Haze and Betty Who.

  • Celebrity Photos: April 2014

    Eddie Murphy's daughters Shayne (left) and Bria Murphy attended Elle's 5th Annual Women in Music concert celebration on April 22 in Hollywood.

  • Celebrity Photos: April 2014

    Jason Sudeikis shared a laugh with Rebecca Hall on set of "Tumbledown" in Boston on April 22.

  • Celebrity Photos: April 2014

    Taylor Swift engaged in some retail therapy in NYC on April 22.

  • Celebrity News: April 2014

    Drew Barrymore gave birth to her second child, a baby girl named Frankie Barrymore Kopelman, on April 22.

  • Celebrity Photos: April 2014

    Cameron Diaz attended the premiere of "The Other Woman" at the Regency Village Theatre in Westwood, Calif., on April 21

  • Celebrity Photos: April 2014

    Katy Perry headed to Jimmy Kimmel's studio in Hollywood, Calif., on April 21.

  • Celebrity Photos: April 2014

    Sofia Vergara wowed at "Good Morning America" on April 21.

  • Celebrity Photos: April 2014

    Selena Gomez went on a coffee run in Studio City, Calif. on April 21.

  • Celebrity Photos: April 2014

    Busy Philipps and husband Marc Silverstein had some fun at Coachella on April 20.

  • Celebrity Photos: April 2014

    Gwen Stefani headed to her parents' house on Easter Sunday, April 20, with her husband Gavin Rossdale and three kids, Kingston, Zuma and Apollo.

  • Celebrity Photos: April 2014

    Tia Mowry soaked up some sun in Cabo, Mexico with her husband Cory Hardrict on April 19.

  • Celebrity Photos: April 2014

    Jennifer Lopez and boyfriend Casper Smart had a casual dinner at Madeo in West Hollywood on April 17.

  • Celebrity Photos: April 2014

    Aubrey Plaza, Jason Ritter, Dade Constantine, and Kayla Dobson attended the "About Alex" premiere afterparty during the Tribeca Film Festival at Kutsher's Tribeca in NYC, April 17.

  • Celebrity Photos: April 2014

    Pregnant singer Christina Aguilera and her fiance Matthew Rutler were photographed out and about in New York City on April 17.

  • Celebrity Photos: April 2014

    Katie Holmes spotted out and about in New York City on April 17.

  • Celebrity Photos: April 2014

    "Downton Abbey" actress Jessica Brown Findlay hopped on a train at Manchester Piccadilly Train Station after her interview on "BBC Breakfast" on April 17 in England.

  • Celebrity Photos: April 2014

    Heather Graham visited NBC Studios for an appearance on "The Today Show" on April 17 in New York City.

  • Celebrity Photos: April 2014

    Justin Bieber and his crew, including Lil Za, were spotted out for dinner at The Grove in Los Angeles, Calif., on April 16.

  • Celebrity Photos: April 2014

    Georgia May Jagger, daughter of Mick Jagger, filmed a commercial for Rimmel London in London, England, on April 15.

  • Celebrity Photos: April 2014

    Halle Berry filmed scenes for her TV series "Extant" in Century City, Calif. on April 15.

  • Celebrity Photos: April 2014

    Lauren Conrad did some shopping in West Hollywood on April 15.

  • Celebrity Photos: April 2014

    Andrew Garfield, Emma Stone, Jamie Foxx and Dane DeHaan posed during a photocall for their film "The Amazing Spider-Man 2" prior to the German premiere of the film in Berlin on April 15.

  • Celebrity Photos: April 2014

    Kim Kardashian and her fiance Kanye West walked hand-in-hand as they went shopping in Givenchy, Balmain and Lanvin on April 14 in Paris, France.

  • Celebrity Photos: April 2014

    Channing Tatum and Jenna Dewan-Tatum joked around backstage at the 2014 MTV Movie Awards at Nokia Theatre L.A. Live in Los Angeles, Calif., on April 13.

  • Celebrity Photos: April 2014

    Lupita Nyong'o arrived at the 2014 MTV Movie Awards at Nokia Theatre L.A. Live in Los Angeles, Calif., on April 13.

  • Celebrity Photos: April 2014

    Taylor Swift and a friend were spotted out and about in New York City on April 12.

  • Celebrity Photos: April 2014

    Jessica Biel was all smiles as she headed out for an espresso in New York City on April 12.

  • Celebrity Photos: April 2014

    Leonardo DiCaprio stopped by the McDonald’s® and Stingray Desert Coachella Pool Party at the Bootsy Bellows Estate on April 12 to celebrate the launch of McDonald’s® Bacon Clubhouse Burger™ and the 2014 Corvette Stingray.

  • Celebrity Photos: April 2014

    Julianne Hough looked Coachella cool at The Old Navy Oasis in Indio, Calif.m on April 12.

  • Celebrity Photos: April 2014

    Selena Gomez and Kendall and Kylie Jenner at the first weekend of The Coachella Valley Music and Arts Festival on April 11.

  • Celebrity Photos: April 2014

    Emma Stone and Andrew Garfield visited BBC Radio 1 in London on April 9 to promote their new film, "The Amazing Spider-Man 2."

  • Celebrity Photos: April 2014

    Pregnant Kristin Cavallari was spotted running in West Hollywood on April 9.

  • Celebrity Photos: April 2014

    Danica McKellar left "Dancing with the Stars" practice in Hollywood on April 8.

  • Celebrity Photos: April 2014

    Julianne Moore was pretty in white while out in NYC April 8.

  • Celebrity Photos: April 2014

    Anne Hathaway wrapped herself up in a giant coat while out in NYC on April 8.

  • Celebrity Photos: April 2014

    Lady Gaga struck her usual unique pose outside the Roseland Ballroom on April 7.

  • Celebrity News: April 2014

    British socialite <a href="http://www.huffingtonpost.com/2014/04/07/peaches-geldof-dead_n_5105968.html" target="_blank">Peaches Geldof died</a> of an "unexplained and sudden" cause on April 7. She was 25.

  • Celebrity Photos: April 7

    "Dancing with the Stars" star Derek Hough took a break from rehearsal on April 7 to snack on the new Ritz crackers.

  • Celebrity Photos: April 2014

    Jamie Lynn Sigler was spotted purchasing a Rembrandt whitening kit at Target in New York on April 7.

  • Celebrity Photos: April 2014

    Faith Hill and Tim McGraw at the 2014 Academy Of Country Music Awards at the MGM Grand Hotel & Casino in Las Vegas, Nevada on April 6.

  • Celebrity Photos: April 2014

    Miranda Lambert and Blake Shelton at the 2014 Academy Of Country Music Awards at the MGM Grand Hotel & Casino in Las Vegas, Nevada on April 6.

  • Celebrity Photos: April 2014

    Carrie Underwood at the 2014 Academy Of Country Music Awards at the MGM Grand Hotel & Casino in Las Vegas, Nevada on April 6.

  • Celebrity Photos: April 2014

    Taylor Swift at the 2014 Academy Of Country Music Awards at the MGM Grand Hotel & Casino in Las Vegas, Nevada on April 6.

  • Celebrity Photos: April 2014

    Cameron Diaz made an appearance on "Wetten, dass..???" TV show on April 5 in Offenburg, Germany.

  • Celebrity Photos: April 2014

    Heidi Klum attended the "America's Got Talent" red carpet event at Madison Square Garden on April 4 in New York City.