Addendum to Lease Agreement



 Exhibit 10.18 
 ADDENDUM TO LEASE AGREEMENT 
 BETWEEN 
 TRADESTATION TECHNOLOGIES, INC. (TENANT) 
 AND 
 SPRINGCREEK PLACE, LTD. (LANDLORD) 
 DATED JUNE 12, 1996 
 AND 
 AMENDED ON 10-12-98, 5-28-99 and 7-25-02 
 This Addendum to Lease Agreement, dated and effective as of July 31,
2007, amends the existing Lease Agreement, as previously amended (described above), for premises located at 1820 North Glenville Drive, Suite 102 in Richardson, TX. (as previously amended, the “Lease”). All the terms and conditions set
forth in the Lease shall remain unmodified and of full force and effect, with the following exceptions: 
  

	 	I.	The expiration date shall be extended to 7-31-2012. 

  

	 	II.	The base rental rate shall be as follows: 

  

	 	a.	$11,270per month from August 1, 2007 through July 31, 2008. 

  

	 	b.	$11,550 per month from August 1, 2008 through July 31, 2009. 

  

	 	c.	$11,835 per month from August 1, 2009 through July 31, 2010. 

  

	 	d.	$12,115 per month from August 1, 2010 through July 31, 2011. 

  

	 	e.	$12,398 per month from August 1, 2011 through July 31, 2012. 

  

	 	III.	The base year shall be changed to 2007. 

  

	 	IV.	Tenant accepts the lease space on an “as is” basis; provided, however, Landlord and Tenant intend to cause the interior improvements to be substantially remodeled as shown
on the attached floor plan and contractor’s estimate of work. The cost of the remodeling will be shared between Landlord and Tenant as follows: 

  

	 	a.	Landlord will pay a total of $95,000.00. 

  

	 	b.	Tenant will pay a total of $150,000.00. 

  

	 	c.	Work in excess of the above amounts or work changes that alter the floor plan or add additional items are the responsibility of Tenant. 

  

	 	d.	Payments on the work will be made as the work progresses with each progress payment being proportionately split between Landlord and Tenant. 

  

 1 









	 	V.	Landlord grants to Tenant one (1), five (5) year renewal option. The option must be exercised in writing, by Tenant, to Landlord at least 180 days prior to the lease maturity.
The market rate for the option period will be determined by the then existing market. This option will become null and void if Tenant ever goes into default on the lease agreement. 

  

	 	VI.	Provided Lessee is not in monetary default under the Lease, Lessor hereby grants to Lessee a one-time option to cancel the Lease on July 31, 2010, provided Lessee
(i) gives Lessor prior written notice of the exercise of such option no later than April 30, 2010, and (ii) simultaneously with the giving of such notice pays to Lessor $60,000 as consideration for the early cancellation of the Lease.


 IN WITNESS WHEREOF, the undersigned, intending to be legally bound, have executed and delivered this Addendum on the
respective dates listed below, causing this Addendum to be effective as of the date first above written. 
 TENANT: TradeStation Technologies, Inc.

  

							
	By:	  	 /s/ Marc J. Stone
	 	Date:	 	 9/4/07

		  	Marc J. Stone, Vice President	 		 	

 LANDLORD: Springcreek Place, Ltd. 
  

							
	By:	  	 /s/ John S. Dryden
	 	Date:	 	 8/29/07

		  	John S. Dryden, President of 46 Corp.	 		 	
		  	General Partner of Springcreek Place, Ltd.	 		 	

  

 2 








 OAKMONT CONSTRUCTION. INC. 
 TRADE STATION 
 ATTN: MR. JOHN DRYDEN 
 SCOPE OF WORK PER DRAWING Dated 17 September 2007 
  

											
	DEMOLITION	  		  		  			  		
	 WALLS
	  	LF	  	298	  	$	9.00	  	$	2,682.00
	 REPAIR WALLS WHERE DEMO WALL INTERSECTED, TAPE, BED
	  	EACH	  	8	  	$	55.00	  	$	440.00
	 REPAIR CEILINGS AT DEMO WALLS
	  	SF	  	2,384	  	$	1.00	  	$	2,384.00
	 DEMO 9’ CEILING
	  	SF	  	2,624	  	$	0.42	  	$	1,102.08
	 CARPET AND BASE
	  	SF	  	13,525	  	$	0.25	  	$	3,381.25
	 DEMO DOORS
	  	EACH	  	9	  	$	15.00	  	$	135.00
	 DEMO CABINETS IN KITCHEN, 4 RESTROOMS
	  	EACH	  	5	  	$	85.00	  	$	425.00
	 DEMO TOILET PARTITIONS
	  	EACH	  	11	  	$	35.00	  	$	385.00
	 DEMO CEILING BOARD
	  	SF	  	13,525	  	$	0.29	  	$	3,922.25
	 DUMPSTER EXPENSE
	  	EACH	  	12	  	$	350.00	  	$	4,200.00
					
	NEW WALL CONSTRUCTION	  		  		  			  		
	 NEW WALLS
	  	LF	  	298	  	$	26.50	  	$	7,897.00
	 SHEETROCK HEADER AT CEILING TRANSITION, TAPE, BED
	  	LF	  	22	  	$	25.00	  	$	550.00
	 REPAIR WALLS IN RESTROOMS AND KITCHEN
	  	EACH	  	5	  	$	135.00	  	$	675.00
	 CLOSE DOOR OPENINGS IN PARTITIONS, TAPE, BED
	  	EACH	  	2	  	$	165.00	  	$	330.00
	 CUT OPENINGS FOR NEW HALLWAY IN IT ROOM, TAPE, BED
	  	EACH	  	2	  	$	155.00	  	$	310.00
					
	WALL FINISHES	  		  		  			  		
	 TAPE, BED, NEW WALLS
	  	SF	  	5,960	  	$	0.85	  	$	5,066.00
	 PAINTING NEW WALLS
	  	SF	  	5,960	  	$	0.49	  	$	2,920.40
	 PAINTING EXISTING WALLS
	  	SF	  	31,098	  	$	0.49	  	$	15,238.02
	 HOT PATCH OLD ELECTRICAL, DATA OUTLETS, TAPE, BED
	  	EACH	  	35	  	$	18.00	  	$	630.00
	 TAPE, BED, PRIME SHEETROCK SEAMS IN RESTROOMS
	  	SF	  	2,250	  	$	0.85	  	$	1,912.50
	 PAINT SHEETROCK CEILINGS IN RESTROOMS
	  	SF	  	800	  	$	0.55	  	$	440.00
	 SKIM AND PREP WALLS FOR WALLPAPER IN RESTROOMS
	  	SF	  	594	  	$	0.60	  	$	356.40
	 WALLPAPER ON RESTROOM WALLS
	  	SF	  	2,250	  	$	2.25	  	$	5,062.50
	 WALLPAPER ON RECEPTION AREA WALLS
	  	SF	  	603	  	$	2.25	  	$	1,356.75
	 EXTEND WALLS FOR 10’ CEILING, TAPE, BED
	  	LF	  	224	  	$	16.00	  	$	3,584.00
	 TAPE, BED, PRlME SHEETROCK SEAMS AT NEW 10’ CEILINGS
	  	SF	  	2,016	  	$	0.85	  	$	1,713.60
					
	FRAMES AND DOORS	  		  		  			  		
	 PAINTING INTERIOR DOOR FRAMES
	  	EACH	  	54	  	$	45.00	  	$	2,430.00
	 PAINTING EXTERIOR DOORS AND FRAMES
	  	EACH	  	3	  	$	85.00	  	$	255.00
	 REMOVE AND RELOCATE EXISTING DOORS
	  	EACH	  	9	  	$	165.00	  	$	1,485.00

  








												
	CEILINGS	  			 		  			  		
	 INSTALL NEW CEILING BOARDS
	  	SF	 	 	13,525	  	$	0.75	  	$	10,143.75
	 REMOVE / INSTALL NEW CEILING GRID
	  	SF	 	 	836	  	$	0.75	  	$	627.00
	 REVEAL EDGE CEILING TILE IN RECEPTION
	  	SF	 	 	800	  	$	1.50	  	$	1,200.00
	 INSTALL NEW 10’ CEILING
	  	SF	 	 	2,624	  	$	2.25	  	$	 5,904.00
					
	RESTROOM ACCESSORIES	  			 		  			  		
	 TOTAL ACCESSORIES
	  			 		  			  	$	2,427.00
	 TOILET PARTITION COMPARTMENTS
	  	EACH	 	 	12	  	$	650.00	  	$	7,800.00
					
	CABINETS	  			 		  			  		
	 RESTROOM VANITY TOPS W/ ADA PANELS
	  	LF	 	 	30	  	$	85.00	  	$	2,550.00
	 REFINISHED UPPER AND LOWER CABINETS IN KITCHEN FULL SPLASH
	  	LF	 	 	18	  	$	185.00	  	$	3,330.00
	 RECEPTION COUNTER
	  	LF	 	 	14	  	$	350.00	  	$	4,900.00
					
	ELECTRICAL SYSTEMS	  			 		  			  	$	38,577.00
					
	PLUMBING	  			 		  			  		
	 NEW RESTROOM SINKS / FAUCETS
	  	EACH	 	 	7	  	$	528.00	  	$	3,696.00
	 NEW KITCHEN SINK / FAUCET, DISPOSAL, DISHWASHER
	  	EACH	 	 	1	  	$	993.00	  	$	993.00
	 REMOVE / INSTALL WATER HEATER UNDER KITCHEN SINK
	  	EACH	 	 	1	  	$	435.00	  	$	435.00
	 NEW COMMODES
	  	EACH	 	 	8	  	$	577.00	  	$	4,616.00
	 NEW URINALS
	  	EACH	 	 	2	  	$	748.00	  	$	1,496.00
					
	HVAC SYSTEMS PER ATTACHMENT	  			 		  			  		
	 NEW STEP SUPPLY GRILLS
	  			 		  			  	$	16,500.00
	 REPLACE EXISTING TORN AND DAMAGED DUCT WITH NEW DUCT
	  			 		  			  		
					
	GENERAL REQUIREMENTS	  			 		  			  		
	 CLEAN UP AND HAUL TRASH AT NEW CONSTRUCTION
	  			 		  			  	$	678.00
					
	 OAKMONT OH AND SUPERVISION
	  	8	%	 		  			  	$	14,171.32
					
	 STATE SALES TAX
	  	7.75	%	 		  			  	$	14,826.74
					
	 TOTAL ESTIMATE
	  			 		  			  	$	206,139.56
					
	 HVAC OPTION A PER ATTACHMENT
	  			 		  	 	ADD	  	$	5,000.00
	 ELECTRICAL REQUIREMENTS
	  			 		  			  	$	345.00
					
	 HVAC OPTION B PER ATTACHMENT
	  			 		  	 	ADD	  	$	7,200.00
	 ELECTRICAL REQUIREMENTS
	  			 		  			  	$	850.00
					
	 HVAC OPTION C PER ATTACHMENT
	  			 		  	 	ADD	  	$	3,400.00
	 ELECTRICAL / ROOFING REQUIREMENTS
	  			 		  			  	$	1,424.00

  







 OAKMONT CONSTRUCTION, INC, 
 TRADE STATION 
 ATTN: MR. JOHN DRYDEN 
 OWNER EXPENSES 
 CARPET AND BASE 
 WOOD FLOORING IN
RECEPTION AREA 
 CERAMIC TILE IN RESTROOMS 
 REPAIR HVAC SYSTEMS
IF REQUIRED 
 ROOFING REPAIR IF REQUIRED 
 FINAL CLEAN

 TENANT EXPENSES 
 SECURlTY SYSTEMS IF REQUIRED 
 SUPPORT NEW PHONE WIRING ABOVE CEILING PER FIRE CODE 
 APPLIANCES IF REQUIRED

 BRUCE EDWARDS 214-546-7605 







 OAKMONT CONSTRUCTION INC. 
 TRADE STATION 
 ATTN: MR. JOHN DRYDEN 
 SCOPE OF WORK 
 ELECTRICAL REQUIREMENTS 
  

											
	 DEMO ELECTRICAL: RELOCATE ELECTRICAL LIGHT SWITCHING, OUTLETS
	  		  		  			  	$	 1,567.00
					
	 INSTALL LIGHT SWITCHES
	  	EACH	  	26	  	$	85.00	  	$	2,210.00
					
	 DUPLEX OUTLETS
	  	EACH	  	27	  	$	85.00	  	$	2,295.00
	 GFI OUTLETS IN KITCHEN
	  	EACH	  	4	  	$	85.00	  	$	340.00
	 DEDICATED OUTLETS
	  	EACH	  	4	  	$	185.00	  	$	740.00
	 IT ROOM ELECTRICAL
	  	EACH	  	4	  	$	220.00	  	$	880.00
	 RECONNECT WATER HEATER
	  		  		  			  	$	145.00
	 NEW BATH EXHAUST FANS
	  	EACH	  	4	  	$	145.00	  	$	580.00
					
	 LABEL ELECTRICAL PANEL
	  		  		  			  	$	500.00
	 T-8 2’ X 4’ PARABOLIC LIGHT FIXTURES
	  	EACH	  	170	  	$	145.00	  	$	24,650.00
					
	 INSTALL 100 AMP PANEL IN IT ROOM
	  		  		  			  	$	4,435.00
	 UPS CONNECTIONS
	  		  		  			  	$	235.00
					
	 TOTAL ESTIMATE
	  		  		  			  	$	38,577.00

  







 New Floor Plan 9/17/07 
 

 







 Current Floor Plan 9/17/07 
 

 
  







 OAKMONT CONSTRUCTION, INC. 
 TRADE STATION 
 ATTN: MR. ROBERT PEREZ 
 SCOPE OF WORK PER EMAIL DRAWINGS DATED 17 SEPTEMBER 2007 
 DEMOLITION, NEW CONSTRUCTION 
 DEMO INTERIOR WALLS, NEW WALLS 
 DEMO CABINETS IN KITCHEN, (4) RESTROOMS,
REPLACE WITH NEW LAMINATE CABINETS, COUNTERTOPS 
 NEW RECEPTION COUNTER SIMILAR TO PICTURES EMAILED 
 DEMO EXISTING TOILET PARTITIONS, NEW TOILET PARTITIONS 
 LAMINATE &
TOILET PARTITION COLORS TO BE SELECTED BY TENANT FROM CONTRACTOR SAMPLES 
 CEILINGS 
 REMOVE 13,525 SF CEILING BOARD, NEW NON-DIRECTIONAL 2’ X 4’ LAY-IN CEILING BOARD 
 DROP EDGE 2’ X 2’
NON-DIRECTIONAL CEILING BOARD IN RECEPTION AREA 
 WALL FINISHES 
 PAINT NEW & EXISTING WALLS 
 WALLPAPER ON RESTROOM & RECEPTION AREA WALLS 
 MATCH EXISTING WALL COLORS 
 WALLPAPER COLORS TO SELECTED BY TENANT FROM
CONTRACTOR SAMPLES 
 FRAMES AND DOORS 
 PAINT INTERIOR
DOOR FRAMES 
 PAINT EXTERIOR DOORS AND FRAMES 
 COLORS TO BE
SELECTED BY TENANT FROM CONTRACTOR SAMPLES 
 RESTROOM ACCESSORIES FOR (4) RESTROOMS 
 MIRRORS 
 PAPER TOWEL DISPENSERS 
 TOILET PAPER DISPENSERS 
  

					
	ELECTRICAL SYSTEMS	  		  	
	 NEW LIGHT SWITCHING PER STATE ENERGY CODE
	  		  	
	 DUPLEX OUTLETS
	  	EACH	  	27
	 GFI OUTLETS IN KITCHEN
	  	EACH	  	4
	 DEDICATED OUTLETS
	  	EACH	  	4
	 IT ROOM ELECTRICAL
	  	EACH	  	4
	 NEW BATH EXHAUST FANS IN (4) RESTROOMS
	  		  	
	 LABEL ELECTRICAL PANEL
	  		  	
	 NEW T-8 2’ X 4’ PARABOLIC LIGHT FIXTURES 13,525 SF
	  		  	
	 INSTALL 100 AMP PANEL IN IT ROOM
	  		  	
	 UPS CONNECTIONS
	  		  	

 PLUMBING 
 NEW
RESTROOMS (4), KITCHEN ADA SINKS / FAUCETS, & DISPOSAL IN KITCHEN 
 NEW COMMODES, URINALS IN 4 RESTROOMS 
 HVAC SYSTEMS 
 NEW STEP SUPPLY GRILLS (13,525 SF) 
 REPLACE EXISTING TORN AND DAMAGED DUCT WITH NEW DUCT(13,525 SF) 
 FLOORING
SYSTEMS 
 CERAMIC TILE IN (4) RESTROOMS 
 WOOD FLOORING
IN RECEPTION AREA 
 CT IN KITCHEN AREA 
 CARPET WITH RUBBER BASE
ALL OTHER AREAS / BALANCE OF 13,525 SF 
 COLORS AND TYPE TO BE SELECTED BY TENANT FROM OWNER SAMPLES