| Pennsylvania State University |
10,691 |
| City of Philadelphia, Pennsylvania |
9,686 |
| University of Pittsburgh Medical Center |
6,193 |
| University of Pittsburgh |
5,912 |
| SunGard Data Systems Inc. |
5,530 |
| SAP America, Inc. |
5,427 |
| CIGNA Corporation |
4,060 |
| Alcoa Inc. |
3,680 |
| Drexel University |
3,335 |
| Howard Hanna Smythe Cramer |
3,119 |
| Comcast Corporation |
2,832 |
| Bayer Corporation |
2,630 |
| IKON Office Solutions, Inc. |
2,592 |
| Saint Joseph's University |
2,500 |
| Morgan Lewis |
2,416 |
| K |
2,365 |
| Prudential Realty |
2,337 |
| Reading School District |
2,301 |
| PNC Financial Services Group Inc |
2,264 |
| Prudential Fox Roach, Inc. |
2,156 |
| Harrisburg Area Community College |
2,118 |
| Unisys Corporation |
2,025 |
| Commonwealth of Pennsylvania |
2,005 |
| William Penn School District |
1,890 |
| Indiana University of Pennsylvania |
1,857 |
| Reed Smith LLP |
1,836 |
| Dechert LLP |
1,599 |
| Downingtown Area School District |
1,576 |
| University Of Pennsylvania |
1,414 |
| School District of Lancaster |
1,385 |
| School District of Philadelphia Education Center |
1,345 |
| ARAMARK Corporation |
1,319 |
| State College Area School District |
1,291 |
| Temple University |
1,286 |
| York College of Pennsylvania |
1,272 |
| Drinker Biddle & Reath LLP |
1,082 |
| PPG Industries, Inc. |
1,068 |
| Central Dauphin School District |
1,047 |
| Black Box Corporation |
1,034 |
| Towers Perrin Reinsurance |
1,009 |
| The Vanguard Group, Inc. |
996 |
| Millersville University |
981 |
| Air Products and Chemicals, Inc. |
980 |
| Slippery Rock University |
968 |
| Saint-Gobain Corporation |
964 |
| Sovereign Bancorp, Inc. |
954 |
| The University of Scranton |
939 |
| Highmark Inc. |
939 |
| Lower Merion School District |
924 |
| Bryn Mawr College |
915 |
| Pepper Hamilton LLP |
914 |
| Lincoln National Corporation |
886 |
| Citi Smith Barney |
867 |
| Cumberland Valley School District |
859 |
| Airgas, Inc. |
856 |
| La Salle University |
851 |
| Centocor, Inc. |
849 |
| Swarthmore College |
836 |
| Prudential Homesale Services Group |
831 |
| GMAC Mortgage, LLC |
818 |
| Carnegie Mellon University |
812 |
| Bucks County Community College |
811 |
| Teva Pharmaceuticals USA |
803 |
| Duane Morris LLP |
797 |
| Franklin & Marshall College |
795 |
| Altoona Area School District |
792 |
| PPL Corporation |
775 |
| Community College Allegheny County |
767 |
| Heinz North America |
735 |
| Ballard Spahr LLP |
733 |
| Daniel Boone Area School District |
725 |
| Woodland Hills School District |
722 |
| Rohm and Haas Company |
718 |
| Souderton Area School District |
690 |
| Manheim Township School District |
689 |
| ACE INA |
686 |
| Cheltenham Township School District |
671 |
| Dickinson College |
663 |
| Pennsylvania College of Technology |
645 |
| The Hershey Company |
634 |
| Buchanan Ingersoll & Rooney PC |
634 |
| Blank Rome LLP |
633 |
| Moravian College |
627 |
| Robert Morris University |
624 |
| Rite Aid Corporation |
614 |
| Respironics, Inc. |
611 |
| Huntingdon Co CTC |
601 |
| FMC Corporation |
598 |
| Cephalon, Inc. |
595 |
| Lincoln University |
594 |
| Shire US |
588 |
| Lehigh University |
575 |
| Children's Hospital of Pittsburgh |
572 |
| Allegheny Energy, Inc. |
571 |
| North Hills School District |
570 |
| Philadelphia Newspapers Inc |
568 |
| Marshall, Dennehey, Warner, Coleman & Goggin |
567 |
| Fox Rothschild LLP |
566 |
| CDI Corp. |
562 |
| Geisinger Health System |
560 |
| Carlisle Area School District |
555 |
| Armstrong World Industries, Inc. |
554 |
| Cabrini College |
552 |
| Albright College |
540 |
| QVC, Inc. |
534 |
| West Penn Allegheny Health System |
529 |
| Juniata College |
522 |
| Moon Area School District |
520 |
| Aamco Transmissions |
515 |
| Cozen O'Connor |
510 |
| Carlow University |
506 |
| The Children's Hospital of Philadelphia |
501 |
| AmerisourceBergen Corporation |
500 |
| Haverford College |
500 |
| Crown Holdings, Inc. |
489 |
| Bethel Park School District |
488 |
| Schoolwires |
486 |
| Sunoco, Inc. |
480 |
| Giant Eagle, Inc. |
477 |
| Bellefonte Area School District |
475 |
| Gwynedd-Mercy College |
473 |
| Management Science Associates, Inc. |
461 |
| Perkiomen Valley School District |
459 |
| Triumph Group, Inc. |
458 |
| Kenexa |
452 |
| Allegheny College |
451 |
| McKeesport Area School District |
449 |
| Right Management Consultants |
444 |
| Bensalem Township School District |
443 |
| Duquesne University |
438 |
| University of the Arts |
435 |
| Villanova University |
433 |
| Rodale, Inc. |
431 |
| Universal Health Services, Inc. |
430 |
| Ametek, Inc. |
430 |
| Capmark |
428 |
| American Eagle Outfitters, Inc. |
416 |
| Entercom Communications Corp. |
415 |
| Kennametal Inc. |
415 |
| Dick's Sporting Goods, Inc. |
412 |
| AmeriGas Partners, L.P. |
409 |
| Pittsburgh Tribune Review/News |
406 |
| New Horizons Computer Learning Centers, Inc. |
406 |
| Misericordia University |
403 |
| Ursinus College |
402 |
| Jack Gaughen Realtor Era |
401 |
| University of Pennsylvania Health System |
399 |
| Independence Blue Cross |
398 |
| Rosemont College |
396 |
| Luzerne County Community College |
395 |
| GSI Commerce, Inc. |
395 |
| Point Park University |
394 |
| Westinghouse Electric Company |
390 |
| Avon Grove Intermediate School |
390 |
| United States Steel Corporation |
384 |
| Mansfield University Of Pennsylvania |
384 |
| Kennett Consolidated School District |
382 |
| Concurrent Technologies Corporation |
379 |
| Federated Investors, Inc. |
378 |
| Delaware Valley School District |
376 |
| WellSpan Health |
371 |
| Thomas Jefferson University |
370 |
| Dallastown Area School District |
369 |
| 84 Lumber Company |
366 |
| WESCO International, Inc. |
366 |
| Susquehanna University |
364 |
| Mylan, Inc. |
364 |
| Conestoga Valley School District |
362 |
| The Bon-Ton Stores, Inc. |
356 |
| Bucknell University |
355 |
| DecisionOne Corporation |
352 |
| Waynesboro Area School District |
347 |
| Main Line Health |
345 |
| Arkema Inc. |
345 |
| Medrad, Inc. |
343 |
| Chambersburg Area School District |
343 |
| Waynesburg College |
342 |
| SAE International |
341 |
| Washington & Jefferson College |
340 |
| Erie Insurance Group |
340 |
| National Energy Technology Laboratory (NETL) |
340 |
| Drexel University College of Medicine |
339 |
| Gettysburg College |
338 |
| Pennsbury School District |
338 |
| Plum Borough School District |
335 |
| Geneva College |
332 |
| NORTHUMBERLAND COUNTY |
329 |
| DENTSPLY International Inc. |
328 |
| Elizabethtown College |
326 |
| Crozer-Keystone Health System |
326 |
| Saul Ewing LLP |
326 |
| Coldwell Banker - Susan T. Silversmith |
325 |
| SEI Investments Co. |
323 |
| Exeter Township School District |
321 |
| Elizabeth Forward School District |
319 |
| Franklin Regional School District |
315 |
| Wharton School of the University of Pennsylvania |
313 |
| Hampton Township School District |
312 |
| Prudential Preferred Realty - Pat Bacu |
310 |
| Janney Montgomery Scott LLC |
309 |
