Document:

EX-10.1

Exhibit 99.1

February 1, 2006

Rob Glaser

c/o RealNetworks, Inc.

2601 Elliott Avenue, Suite 1000

Seattle, WA 98121

Dear Rob:

In consideration for your excellent leadership and outstanding efforts relating to the Microsoft
antitrust case and your continued employment with RealNetworks, the Board of Directors of
RealNetworks is pleased to offer you the bonus plan and payments described in Exhibit A (the “Bonus
Payments”).

You will be entitled to receive the Bonus Payments unless RealNetworks has terminated your
employment for Cause, as defined below, or you voluntarily choose to end your employment with
RealNetworks, in which case you will not be entitled to any Bonus Payments after the date of your
termination or voluntary resignation. Once paid, a Bonus Payment will be considered final and
irrevocable. If RealNetworks materially changes your job responsibilities, moves your primary
workplace by more than 15 miles or is acquired by a third party, any subsequent resignation by you
will not be considered “voluntary” and you will be entitled to receive all Bonus Payments on your
last day of employment. In the event of your death or permanent disability, you or your heirs will
be entitled to receive all Bonus Payments within 30 days. In addition, in the event of any
mutually agreed (a) change in your employment status to part-time for a continuous period lasting
greater than three months or (b) leave of absence for a continuous period lasting greater than
three months, the Bonus Payments may be adjusted to reflect appropriately such change in status
(for example, by altering the payment schedule, pro-rating the payments, tolling the payment
schedule or such other mechanism as agreed by the parties). Notwithstanding the previous sentence,
there shall not be any adjustment to the Bonus Payments or schedule as a result of any change in
employment status relating to disability (other than a permanent disability as described above),
medical or family leave or other FMLA-related leave.

As used in this agreement, “Cause” means conduct involving one or more of the following: (i) your
substantial and continuing failure after written notice to render services to RealNetworks in
accordance with the terms or requirements of your employment for reasons other than illness or
incapacity; or (ii) willful misconduct, fraud, embezzlement, theft, misrepresentation or dishonesty
involving RealNetworks resulting in any case in material harm to RealNetworks.

Sincerely,

The Board of Directors of RealNetworks, Inc.

By: /s/ Jeremy Jaech

Jeremy Jaech, on behalf of the

Board of Directors of RealNetworks, Inc.

I have read and agree to the terms of the incentive bonus agreement contained in this
letter.

Name: /s/ Rob Glaser

Rob Glaser

Date: February 1, 2006

1

Exhibit A

to Incentive Bonus Agreement

Schedule of Bonus Payments – Rob Glaser

	 	 	 
	Amount	 	Date Payable
	$1.45 million

	 	February 1, 2006
	 
	 	 
	$725,000

	 	July 15, 2006
	 
	 	 
	$725,000

	 	January 15, 2007
	 
	 	 

2EX-10.1

AMENDMENT NO. 1

Agreement For Purchase and Safe of Real Property and Escrow Instructions Effectively

Dated November 8, 2005 (“Agreement”) between

TREIT-UNIVERSITY HEIGHTS, LP, as Seller (“Seller”) and

ADLER REALTY INVESTMENTS, INC., as Buyer (“Buyer”)

WHEREAS, the parties desire to amend the above-defined Agreement by this Amendment No. 1
(“Amendment”),

WHEREAS, all defined terms in this Amendment shall have the same meaning as set forth in the
Agreement,

NOW, THEREFORE in consideration for good and valuable consideration, the receipt of which is hereby
acknowledged, the parties agree as follows:

Extension of Inspection Period The Inspection Period is hereby extended from December 16,
2005 to December 20, 2005.

Except as stated herein, all other terms and provisions of the Agreement shall remain in fill force
and effect.

IN WITNESS WHEREOF, Buyer and Seller have executed this Amendment as of the dates below, to be
effective December 14 2005.

SELLER:

TREIT— University Heights, LP,

a Texas limited partnership

By: TREIT-University Heights GP, LLC, a Texas
limited liability company,

Its: General Partner

By: Triple Net Properties, LLC,

a Virginia limited liability company,

Its: Manager

By: /s/ Jack Maurer

Name: Jack Maurer

Title: CEO

Executed by Seller this      day of December, 2005.

1

BUYER:

ADLER REALTY INVESTMENTS, INC., a California

corporation

	 	 	 
	BY:

NAME:

ITS:

	 	/s/ Michael S. Adler

MICHAEL S. ADLER

PRESIDENT

Executed by Buyer this 14 day of December, 2005.

2EX-10.2

AMENDMENT NO.2

Agreement For Purchase and Sale of Real Property and Escrow Instructions Effectively

Dated November 8, 2005 (“Agreement”) between

TREIT-UNIVERSITY HEIGHTS, LP, as Seller (“Seller”) and

ADLER REALTY INVESTMENTS, INC., as Buyer (“Buyer”)

WHEREAS, the parties desire to amend the above-defined Agreement by this Amendment No. 2
(“Amendment”),

WHEREAS, all defined terms in this Amendment shall have the same meaning as set forth in the
Agreement,

NOW, THEREFORE, in consideration for good and valuable consideration, the receipt of which is
hereby acknowledged, the parties agree as follows:

1. Seller agrees to pay any and all leasing commissions that are due or will become due in
connection with the revised term of that certain Industrial Building Lease dated September 7, 2000
between Seller (as successor in interest to Transwestem Heights, L.P.) and Campos Family Dental,
P.C., as amended by that certain First Amendment of Industrial Building Lease dated November
29th, 2005, including, but not limited to, the leasing commissions owed to Seller’s
affiliate.

2. At Close of Escrow, Seller shall deposit in the same interest bearing account holding the
Rent Guaranty Escrow and Lease Cost Escrow (defined in Section 24 of the Agreement), $25,000.00
with the Escrow Holder. Said $25,000.00 is a negotiated amount between Buyer and Seller to offset
leasing costs in connection with the leasing of Isaack’s Missing Link space which will be vacated
on or before January 31, 2006 by the tenant (“Additional Lease Escrow”). Upon the earlier of: (i) a
new lease being entered regarding such space or any portion thereof or (ii) December 31, 2006, the
Additional Lease Escrow shall be delivered by the Escrow Holder to the Buyer.

Except as stated herein, all other terms and provisions of the Agreement shall remain in full force
and effect.

IN WITNESS WHEREOF, Buyer and Seller have executed this Amendment as of the dates below, to be
effective December 15, 2005.

SELLER:

TREIT— University Heights, LP,

a Texas limited partnership

By: TREIT-University Heights GP, LLC, a Texas
limited liability company,

Its: General Partner

By: Triple Net Properties, LLC,

a Virginia limited liability company,

Its: Manager

By: /s/ Jack Maurer

Name: Jack Maurer

Title: CEO

BUYER:

ADLER REALTY INVESTMENTS, INC., a California

corporation

	 	 	 
	BY:

NAME:

ITS:

	 	/s/ Michael S. Adler

MICHAEL S. ADLER

PRESIDENT

Executed by Buyer this 16 day of December, 2005.EX-10.3

ACKNOWLEDGEMENT OF EXTENDED CLOSING DATE

This Acknowledgement of Extended Closing Date (“Acknowledgment”) is entered into this day of
January, 2006 by and between ADLER REALTY INVESTMENTS, INC., a

California corporation (“Buyer”) and TREIT-UNIVERSITY HEIGHTS, LP (“Seller”).

In connection with that certain Agreement For Purchase and Sale of Real Property And Escrow
Instructions entered into between Seller and Buyer effectively dated November 8, 2005, as amended
by Amendment No. 1 effectively dated December 14, 2005 and Amendment No. 2 effectively dated
December 15, 2005 (collectively the “Agreement”), the parties hereby acknowledge that the Close of
Escrow as set forth in Section 6.2.1 of the Agreement will be extended to February 21, 2006;
provided that Buyer deposit with the Escrow Agent, as defined in the Agreement, on or before
January 19, 2006, the amount of $25,000.00 as additional earnest money in accordance with said
Section 6.2.1 of the Agreement.

Buyer and Seller have executed this Acknowledgement as of the dates below, to be effective

January 13, 2006.

SELLER:

TREIT— University Heights, LP,

a Texas limited partnership

By: TREIT-University Heights GP, LLC, a Texas

limited liability company,

Its: General Partner

By: Triple Net Properties, LLC,

a Virginia limited liability company,

Its: Manager

By: /s/ Jack Maurer

Name: Jack Maurer

Title: EVP/MANAGER

Executed by Seller this 17th day of January, 2006.

BUYER:

ADLER REALTY INVESTMENTS, INC., a

California corporation

By: /s/ Michael S. Adler

	 	 	Name: MICHAEL S. ADLER

Its: PRESIDENT

Executed by Buyer this 13th day of January, 2006.EX-10.4

THIRD AMENDMENT TO AGREEMENT FOR PURCHASE AND SALE

OF REAL PROPERTY AND ESCROW INSTRUCTIONS

THIS THIRD AMENDMENT TO AGREEMENT FOR PURCHASE AND SALE OF

REAL PROPERTY AND ESCROW INSTRUCTIONS (this “Amendment”) is made and entered into as of this 27th
day of January, 2006, by and between TREIT-UNIVERSITY HEIGHTS, LP, a Texas limited partnership (the
“Seller”); and ARI UNIVERSITY HEIGHTS, LP, a Delaware limited partnership; UNIVERSITY HEIGHTS HELD,
LLC, a Delaware limited liability company; UNIVERSITY HEIGHTS LUKENS, LLC, a Delaware limited
liability company; and UNIVERSITY HEIGHTS VANDEVER, LLC, a Delaware limited liability company
(collectively, the “Buyer”).

Recitals

WHEREAS, Seller and Adler Realty Investments, Inc., a California corporation (“Adler”),
entered into that certain Agreement for Purchase and Sale of Real Property and Escrow Instructions
dated as of November 8, 2005, with respect to that certain real property located in Bexar County,
San Antonio, Texas, as more particularly described in Exhibit A to the Agreement (together with all
amendments, collectively, the “Agreement”); and

WHEREAS, Buyer is the successor in interest under the Agreement to Adler; and

WHEREAS, Buyer desires that the Close of Escrow take place on January 31, 2006; and

WHEREAS, in order to accommodate Buyer’s desire with respect to the Close of Escrow, Seller
intends to purchase certain securities on January 27, 2006 so as to effect the defeasance of its
loan against the Real Property; and

WHEREAS, in so doing, Seller could incur substantial financial losses in the event that
Closing did not take place on January 31, 2006; and

WHEREAS, to induce Seller to prepare to sell the Real Property on January 31, 2006, Buyer
desires to waive any and all contingencies and/or conditions precedent to Closing as provided in
this Amendment; and

WHEREAS, Seller and Buyer desire to confirm their obligations with respect to Closing as
provided in this Amendment; and

WHEREAS, all capitalized terms not defined herein shall have the meanings ascribed to them in
the Agreement.

1

Agreement

NOW, THEREFORE, in consideration of the Real Property and for good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

1. Notwithstanding anything to the contrary in the Agreement, Buyer hereby waives any and all
contingencies and/or conditions precedent to Closing (except Seller’s failure to deliver the
documents required to be delivered by Seller at Closing) and Buyer agrees to proceed to Closing as
provided for in Paragraph 2 of this Amendment, and, Buyer agrees that the Deposit is no longer
refundable for any reason except Seller’s failure to deliver the documents required to be delivered
by Seller at Closing.

2 Notwithstanding anything to the contrary in the Agreement, Seller and Buyer hereby agree
that the Close of Escrow shall be Tuesday, January 31, 2006, time being of the essence.

3. Notwithstanding anything to the contrary in the Agreement, Seller and Buyer agree to
execute and deliver at Closing an escrow Agreement in the form attached hereto as Exhibit A.

4. Except as provided for in this Amendment, the Agreement remains in full force and effect
unchanged and unaffected, and Seller and Buyer hereby rati and confirm the same. This Amendment

5. This Amendment may be executed in counterparts, all of which taken together shall
constitute the entire Amendment. It shall be effective upon full execution of the parties hereto.

[SIGNATURES TO FOLLOW]

2

Witness the following signatures:

EXECUTED on this 27th day of January, 2006.

	 	 	 	 	 	 	 	 	 
	SELLER:	 	TREIT— University Heights GP, LP,
	 	 	 	 
	 
	 	 	 	 	 	 	 	 
	 	 	a Texas limited partnership
	 	 	 	 
	 
	 	 	 	 	 	 	 	 
	 	 	By:	 	TREIT-University Heights GP, LLC,
	 	 
	 
	 	 	 	 	 	 	 	 
	 	 	 	 	a Texas limited liability company,
	 	 
	 
	 	 	 	 	 	 	 	 
	
 
	 	 	 	its General Partner
	 	

	 	

	 
	 	 	 	 	 	 	 	 
	
 
	 	 	 	By:
	 	Triple Net Properties, LLC,
	 	

	 
	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	a Virginia limited liability company,

	 
	 	 	 	 	 	 	 	 
	
 
	 	 	 	 	 	its Manager
	 	

	 
	 	 	 	 	 	 	 	 
	
 
	 	 	 	 	 	By:
	 	/s/ Jack Maurer

	 	 	 	 	 	 	 	 	 
	Name:	JACK MAURER	 	 	 
	Its:	 	 	 	EVP/MANAGER
	EXECUTED on this 27th day of January, 2006.	 	 	 	 
	BUYER: ARI UNIVERSITY HEIGHTS, L.P.,	 	 	 	 	 	 
	a Delaware limited partnership	 	 	 	 	 	 
	By:	 	ARI UHeights, LLC,	 	 	 	 	 	 
	 	 	a Delaware limited liability company,	 	 	 	 
	 	 	Its: General Partner	 	 	 	 	 	 
	 	 	By: Adler Realty Investments, Inc.	 	 
	 	 	a California corporation,	 	 
	 	 	Its: Sole Member	 	 	 	 
	 	 	By:	 	 	 	 	 	/s/ Michael S. Adler

	 	 	Michael S. Adler, President

EXECUTED on this 27th day of January, 2006.

	 	 	 	 	 
	BUYER:

	 	UNIVERSITY HEIGHTS HELD, LLC,
	 	

	 
	 	 	 	 
	 	 	a Delaware limited liability company

	 
	 	 	 	 
	
 
	 	By:

Name:

Its:
	 	/s/ David Held

David Held

President

EXECUTED on this 27th day of January, 2006.

	 	 	 	 	 
	BUYER:	 	UNIVERSITY HEIGHTS LUKENS, LLC,

	 
	 	 	 	 
	 	 	a Delaware limited liability company

	 
	 	 	 	 
	
 
	 	By:

Name:

Its:
	 	/s/ Reaves C. Lukens, Jr.

Reaves C. Lukens, Jr.

President

EXECUTED on this 27th day of January, 2006.

	 	 	 	 	 
	BUYER:	 	UNIVERSITY HEIGHTS VANDEVER, LLC,

	 
	 	 	 	 
	 	 	a Delaware limited liability company

	 
	 	 	 	 
	
 
	 	By:

Name:

Its:
	 	/s/ James D. Vandever

James D. Vandever

President
	 
	 	 	 	 

3

EXHIBIT A: Form of Escrow Agreement

[See Attached]

4

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