Starboard Principal Co GP LLC (CIK 0001517140)

Latest company ownership

Role: Other
Shares held
1,825,619
Last filed at
Mar 8, 2024
Confidence Score
50.0
2025Q4
Confidence Score History
2024Q1 2025Q4
Role: 10% Owner
Shares held
1,500,174
Last filed at
Dec 7, 2016
Confidence Score
50.0
2025Q4
Confidence Score History
2013Q1 2025Q4
Role: 10% Owner
Shares held
437,753
Last filed at
Aug 15, 2012
Confidence Score
50.0
2025Q4
Confidence Score History
2012Q3 2025Q4
Role: 10% Owner
Shares held
222,056
Last filed at
Mar 18, 2013
Confidence Score
50.0
2025Q4
Confidence Score History
2013Q1 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Mar 6, 2024 Mar 8, 2024 GREEN DOT CORP Other Sell 17.5 -275,729 -5.21% $2.3M
Dec 6, 2016 Dec 7, 2016 QUANTUM CORP /DE/ 10% Owner Sell 16.3 -7,850,000 -51.08% $7.2M
Dec 1, 2016 Dec 5, 2016 QUANTUM CORP /DE/ 10% Owner Sell 17.5 -3,600,000 -18.98% $3.3M
Mar 16, 2016 Mar 18, 2016 QUANTUM CORP /DE/ 10% Owner Sell 17.5 -1,726,004 -8.34% $1.1M
Jan 22, 2016 Jan 26, 2016 QUANTUM CORP /DE/ 10% Owner Sell 17.5 -5,000,000 -19.46% $3.6M
Apr 4, 2013 Apr 8, 2013 QUANTUM CORP /DE/ 10% Owner Buy 97.5 +250,000 10.31% $308.1K
Apr 1, 2013 Apr 3, 2013 QUANTUM CORP /DE/ 10% Owner Buy 100.0 +1,425,000 142.50% $1.8M
Mar 15, 2013 Mar 18, 2013 EXTREME NETWORKS INC 10% Owner Sell 20.0 -120,300 -1.28% $428.8K
Mar 13, 2013 Mar 15, 2013 QUANTUM CORP /DE/ 10% Owner Buy 100.0 +1,000,000 100.00% $1.2M
Aug 13, 2012 Aug 15, 2012 SURMODICS INC 10% Owner Sell 17.5 -80,200 -4.38% $1.4M
Aug 8, 2012 Aug 10, 2012 SURMODICS INC 10% Owner Sell 17.5 -257,560 -12.33% $4.6M