SCHEDULE 13D/A

TRIPADVISOR INC

Common Stock, $0.001 par value per share · CUSIP: 896945201

Event date: 2026-03-04

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Starboard Value LPReported CIK 0001517137

  Shares: 10,774,996.00 · Class: 9.4%

• STARBOARD VALUE & OPPORTUNITY MASTER FUND LTDReported CIK 0001373638

  Shares: 5,799,775.00 · Class: 5.1%

• STARBOARD VALUE & OPPORTUNITY S LLCReported CIK 0001519812

  Shares: 805,253.00 · Class: 0.7%

• Starboard Value & Opportunity Master Fund L LPReported CIK 0001767736

  Shares: 316,321.00 · Class: 0.3%

• Starboard Value L LPReported CIK 0001767773

  Shares: 316,321.00 · Class: 0.3%

• Starboard Value R GP LLCReported CIK 0001575979

  Shares: 316,321.00 · Class: 0.3%

• Starboard X Master Fund LtdReported CIK 0001833016

  Shares: 2,116,298.00 · Class: 1.8%

• Starboard Value GP LLCReported CIK 0001517138

  Shares: 10,774,996.00 · Class: 9.4%

• Starboard Principal Co LPReported CIK 0001517139

  Shares: 10,774,996.00 · Class: 9.4%

• Starboard Principal Co GP LLCReported CIK 0001517140

  Shares: 10,774,996.00 · Class: 9.4%

• Smith Jeffrey CReported CIK 0001362697

  Shares: 10,774,996.00 · Class: 9.4%

• Feld Peter AReported CIK 0001410600

  Shares: 10,774,996.00 · Class: 9.4%

• Cates Andrew F.Reported CIK 0001465849

  Shares: 9,951.00 · Class: 0.001%

• Fonseca Dhiren R.Reported CIK 0001468327

  Shares: 15,676.50 · Class: 0.01%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.