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Exhibit 10.19    
  

[COGENT LETTERHEAD]  

1015 31st Street, NW

Suite 330

Washington, DC 20007

Tel: 202-295-4208

Confidential Fax: 202-342-8269 

October 11,
2000 

Helen
Lee 

Dear
Helen, 

        Cogent
Communications is offering you the position of Chief Financial Officer. This position will offer an annual compensation of $220,000. This role is defined as an "exempt" position
and will not be eligible for overtime compensation. Base salary will be paid semi-monthly. 

        In
addition to the cash compensation you receive, Cogent will issue to you options to purchase 450,000 shares of common stock in the company at a strike price of $1.50.
Twenty-five percent (25%) of these options will vest immediately upon hire. The remainder will vest quarterly over the next three (3) years so that you will be fully vested after
three (3) years of employment. In order to receive these options you must sign Cogent's option agreement at the time of your employment. 

        Cogent
will periodically perform employee evaluations at minimum intervals of 12 months commencing within 18 months of your employment. These reviews will be utilized to
evaluate your compensation package relative to the market for similar level individuals at organizations of comparable stage of development and market opportunity to Cogent. 

        In
the event of Constructive Termination Without Cause, you will receive 6 months salary against $220,000, six months of benefits coverage, all vested shares and shares to be
vested in the quarter of termination. For purposes of this Agreement, "Constructive Termination Without Case" shall mean (1) your employment as Chief Financial Officer of Cogent being
terminated by Cogent (other than for Cause); (2) any of your titles or responsibilities being reduced in any material respect by Cogent (other than for Cause), without your prior consent and
not based on merit; and (3) your base salary or benefits being reduced by any material amount. In the event of a Change of Control, in addition to the conditions mentioned above, you will
receive 100% of your unvested shares at the $1.50 strike price. Upon Initial Public Offering (IPO), 50% of the remaining unvested shares will vest immediately. Those remaining will vest on the
schedule listed above. Also, it is explicitly stated that sections 14B & 22 of the stock option agreement will not be apply to this optionee. 

        In
order to compensate you for moving expenses associated with this position, Cogent proposes a $45,000 moving budget with a commitment on your part to relocate your principal residence
to the company's headquarter location in Washington, DC within 9 months. During the intervening period, you are committed to spending 5 days per week at the company's headquarters or on
company related travel and bearing all non-company related travel and lodging expenses associated with that commitment from the budget mentioned above. 

        As
a member of Cogent's team, you will be entitled to company funded health care insurance, dental coverage, and life insurance. The company has also implemented a 401(k) retirement plan
that is corporately administered, however, it requires individual contributions on a non-matching basis by individual participants. You will be eligible for 3 weeks paid vacation annually.
Additionally, the company has 6 fixed major holidays and 2 discretionary floating holidays to be chosen by you. 

        Your
employment date will be November 20th, 2000, or at a mutually agreed to date between yourself and the company. Also, as a condition of employment, you will be required to
sign Cogent's standard agreement providing for invention disclosure and assignment, limitation of your right to compete with Cogent if you leave, and non-disclosure of confidential
information. 

        We
look forward to having you join our team and build the most advanced next generation network for high-speed Internet services. This offer remains in effect through
October 20th, 2000 at 10:00am. If you have any further questions, please give me a call at 202-295-4208. 

	

Sincerely,	
 	

 	
 	

 
	

/s/ Dave Schaeffer	
 	

 	
 	

 
	

Dave Schaeffer

CEO	
 	

 	
 	

 
	

Accepted	
 	

 	
 	

 
	

/s/ H. Helen Lee
 Helen Lee	
 	

Oct. 20, 2000
 Date	
 	

 

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Exhibit 10.20    
  

[COGENT LETTERHEAD]  

1015 31st Street, NW Suite 330

Washington, DC 20007

Tel: 202-295-4208

Fax: 202-338-8798 

June 15,
2000 

Robert
N. Beury, Jr.

11926 Richland Lane

Oak Hill, VA 20171 

Dear
Bob, 

        Cogent
Communications is offering you the position of General Counsel and Vice President of Law. This position will offer a total compensation of $196,000. Base salary will be paid
semi-monthly. 

        In
addition to the cash compensation you receive, Cogent will issue 175,000 shares of options to purchase common equity in the company at a strike price of $1.00. 100% of these options
will vest quarterly over a 4-year period. Based upon the targeted capitalization of the company, there will be 90.0 million shares outstanding. 

        Cogent
will periodically perform employee evaluations at minimum intervals of 12 months commencing within 18 months of your employment. These reviews will be utilized to
evaluate your compensation package relative to the market for similar level professionals at organizations of comparable stage of development and market opportunity to Cogent. The findings of these
reviews will be submitted to the company's compensation committee for final decision and appropriate compensation adjustments. 

        In
the event of Termination Without Cause, you will receive six month's salary against $196,000. In the event of a Change of Control and Termination Without Cause or Constructive
Termination, in addition to the conditions mentioned above, you will receive 50% of your unvested shares at the $1.00 strike price. 

        As
a member of Cogent's team, you will be entitled to company funded health care insurance, dental coverage, and life insurance. The company has also implemented a 401(k) retirement plan
that is corporately administered, however, it will require individual contributions on a non-matching basis by individual participants. Cogent will offer 3 weeks paid vacation in
recognition of your previous vacation compensation. Additionally, the company will implement 6 fixed major holidays and 2 discretionary floating holidays to be chosen from other less recognized
holidays. 

        If
this offer is accepted by June 20th, 2000, your employment date will be considered July 10th, 2000 and the vesting of your stock options will
begin at that time. During the period of time between July 10th, 2000 and September 5th, 2000, your duties and responsibilities will be on a
part-time basis. Additionally, effective July 10th, 2000, you are eligible for participation in all of Cogent's benefit plans that provide for participation by
part-time employees. During this period of employment, your sole compensation will be the accrued vesting of your options. The cash portion of your compensation will commence upon your
full time employment for Cogent on or about September 5th, 2000. Upon acceptance of this offer of employment, you will be required to sign a standard non-compete and
non-disclosure agreement with the company. 

        We
look forward to having you join our team and build the most advanced next generation network for high-speed Internet services. This offer remains in effect through
June 20th, 2000 at 10:00am. If you have any further questions, please give me a call at 202-295-4208. 

	

Sincerely,	
 	

 	
 	

 
	

/s/ Shawn Kolb	
 	

 	
 	

 
	

Shawn Kolb

Director of Human Resources	
 	

 	
 	

 
	

Accepted	
 	

 	
 	

 
	

/s/ Robert N. Beury, Jr.	
 	

 	
 	

 
	
 Robert N. Beury, Jr.	 	
 Date	 	 

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Exhibit 10.21    
  

[COGENT LETTERHEAD]  

1015 31st Street, NW Suite 330

Washington, DC 20007

Tel: 202-295-4208

Fax: 202-338-8798 

September 18,
2000 

Mark
Allen Schleifer

13400 Briarwood Drive

Laurel, MD 20708-1410 

Dear
Mark: 

        Thank
you for your interest in Cogent Communications! We would like to extend to you the position of Director Network Engineer. The current cash compensation for this position will be a
base salary of $208,000. Base salary will be paid semi-monthly. Additionally, you will receive a signing bonus of $20,800 to be paid on November 1st, 2000. 

        In
addition to the cash compensation you receive, Cogent will issue 175,000 shares of options to purchase common equity in the company at a strike price of $1.50. 100% of these options
will vest on a quarterly basis over a 4-year period with a 1-year cliff. Based upon the targeted capitalization of the company, there will be 70 million shares
outstanding. 

        Cogent
will periodically perform employee evaluations at minimum intervals of 12 months commencing within 18 months of your employment. These reviews will be utilized to
evaluate your compensation
package relative to the market for similar level professionals at organizations of comparable stage of development and market opportunity to Cogent. The findings of these reviews will be submitted to
the company's compensation committee for final decision and appropriate compensation adjustments. 

        In
the event of Constructive Termination Without Cause, you will receive one months salary against $208,000, six months of benefits coverage, all vested shares and shares to be vested in
the quarter of termination. In the event of a Change of Control and either Termination Without Cause or Constructive Termination, in addition to the conditions mentioned above, you will receive 50% of
your unvested shares at the $1.50 strike price. 

        As
a member of the Cogent team, you will be entitled to company funded health care insurance, dental coverage, and life insurance. The company has also implemented a 401(k) retirement
plan that is corporately administered, however, it will require individual contributions on a non-matching basis by individual participants. Cogent is prepared to offer 4 weeks of paid
vacation. Additionally, the company has implemented 6 fixed major holidays and 2 discretionary floating holidays to be chosen from other less recognized holidays. 

        Your
employment date is expected to be October 3rd, 2000 or at a mutually agreed to date between yourself and the company. Also, upon acceptance of this offer of
employment, you will be required to sign a standard non-compete and non-disclosure agreement and a Federal I-9 form. Also, by signing this offer letter you warrant
that you are not currently bound by any contract that would conflict with this document or our non-compete and non-disclosure agreement. 

        We
look forward to having you join our team and build the most advanced next generation network for high-speed Internet services. If you have any further questions, please
give me a call at 202-295-4208. 

	

Sincerely,	
 	

 	
 	

 
	

/s/ Shawn Guzzo	
 	

 	
 	

 
	

Shawn Guzzo

Director of Human Resources	
 	

 	
 	

 
	

Agreed and Accepted	
 	

 	
 	

 
	

/s/ Mark A. Schleifer
 Mark Allen Schleifer	
 	

10/3/2000
 Date	
 	

 

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Exhibit 10.21

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