Administaff Inc de

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Administaff Inc de
TickerNSP
CIK #0001000753
CUSIP45778Q107
SectorTrade & Services - Services-Help Supply Services
Address19001 Crescent Springs Dr, Kingwood, TX 77339
Source [EDGAR]
CIK Filing 2011 - 2025
[0001000753] 10-K
[0001000753] 10-Q
[0001000753] 3
[0001000753] 4
[0001000753] 5
[0001000753] 8-K
[0001000753] SC 13D
[0001000753] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
FMR LLC Insperity Inc [2021-02-08] 0.0
Mawer Investment Management Ltd Insperity Inc [2021-02-05] 5.62
Stadium Capital Management LLC Insperity Inc [2015-03-24] 5.8
Starboard Value LP Insperity Inc [2015-01-20] 13.2
Stadium Capital Management LLC Insperity Inc [2014-03-27] 0.1
Vulcan Value Partners LLC Insperity Inc [2014-02-10] 6.25
Columbia Wanger Asset Management LLC Insperity Inc [2013-02-14] 7.7
Vanguard Group Inc Insperity Inc [2013-02-13] 5.12
Parnassus Investments /CA Insperity Inc [2013-02-08] 6.1
Stadium Capital Management LLC Insperity Inc [2012-05-25] 7.1
Form 3/4/5 Filer 2011 - 2025
Clifford Tim
Insperity Inc
Ramchand Latha
Mehl Randall
Kaufman Carol R
Allison James D
Jones Eli
Lumelleau John L
Masterson Ellen H
Sarvadi Paul J
Arizpe Arthur A
Morphy John M
Rawson Richard G
Wilmington Philip W
Duffy Sean Patrick
Callens Christian P
Sharp Douglas S
Herink Daniel D
Mincks Jay E
Young Austin P
Michelle McKenna
Feld Peter A
Sorensen Norman R
Brown Michael W
Fields Jack M Jr
Lattanzio Paul S
Traub Kenneth
Smith Jeffrey C
Mitchell Mark R
Starboard Value & Opportunity C LP
Starboard Principal Co LP
Starboard Value & Opportunity Master Fund Ltd
Starboard Value & Opportunity S LLC
Starboard Value LP
Starboard Value R LP
Starboard Value GP LLC
Starboard Principal Co GP LLC
Starboard Value R GP LLC
Petsch Gregory E
Form 13F Holdings
Firm Period DFND Voting Shares
Mawer Investment Management Ltd [2025-06-30] SOLE 4,768,335 4,834,935
BlackRock, Inc. [2025-06-30] SOLE 4,155,759 4,255,013
Vanguard Group Inc [2025-06-30] SOLE 0 3,723,086
Reinhart Partners LLC [2025-06-30] SOLE 1,620,139 1,786,953
Charles Schwab Investment Management Inc [2025-06-30] SOLE 1,452,465 1,452,465
Earnest Partners LLC [2025-06-30] SOLE 975,419 1,346,488
Bank of America Corp /DE/ [2025-06-30] DFND 10,288 1,331,747
State Street Corp [2025-06-30] DFND 1,177,589 1,307,782
Geode Capital Management LLC [2025-06-30] DFND 1,024,030 1,030,548
Hawk Ridge Capital Management LP [2025-06-30] SOLE 791,500 791,500
SEI Investments Co [2025-06-30] SOLE 791,122 791,122
River Road Asset Management LLC [2025-06-30] SOLE 664,366 780,463
Dimensional Fund Advisors LP [2025-06-30] SOLE 619,212 663,730
Jacobs Levy Equity Management Inc [2025-06-30] SOLE 524,585 615,670
Goldman Sachs Group Inc [2025-06-30] DFND 513,119 513,200
Invesco Ltd. [2025-06-30] DFND 0 468,995
FIL Ltd [2025-06-30] DFND 466,637 466,637
Norges Bank [2025-06-30] SOLE 448,432 448,432
Northern Trust Corp [2025-06-30] DFND 432,259 432,365
Bank of New York Mellon Corp [2025-06-30] DFND 411,901 423,530
Royce & Associates LP [2025-06-30] SOLE 412,628 412,628
Millennium Management LLC [2025-06-30] SOLE 397,173 397,173
Morgan Stanley [2025-06-30] DFND 339,320 350,188
Voloridge Investment Management LLC [2025-06-30] SOLE 324,704 324,704
Jane Street Group LLC [2025-06-30] DFND 248,022 248,022
Man Group plc [2025-06-30] DFND 205,623 222,763
BNP Paribas Financial Markets [2025-06-30] DFND 0 211,273
D. E. Shaw & Co., Inc. [2025-06-30] DFND 210,126 210,126
JPMorgan Chase & Co [2025-06-30] DFND 136,704 205,272
Wells Fargo & Company/MN [2025-06-30] DFND 18,685 205,088
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