EX-4.5




 Exhibit 4.5 

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED

 As of December 31, 2021, Haymaker Acquisition Corp. III (“we,” “our,” “us” or the
“Company”) had the following three classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): (i) its units, consisting of one share of Class A common
stock (as defined below) and one-fourth of one redeemable warrant (as defined below), with each whole warrant entitling the holder thereof to purchase one share of Class A common stock (the
“units”), (ii) its Class A common stock, $0.0001 par value per share (“Class A common stock”), and (iii) its public warrants, with each whole warrant exercisable for one share of Class A common stock for
$11.50 per share (the “warrants”). 
 Pursuant to our amended and restated certificate of incorporation, our authorized capital
stock consists of 220,000,000 shares of common stock, including 200,000,000 shares of Class A common stock, $0.0001 par value and 20,000,000 shares of Class B common stock, $0.0001 par value, and 1,000,000 shares of undesignated preferred
stock, $0.0001 par value. The following description summarizes the material terms of our capital stock and does not purport to be complete. It is subject to, and qualified in its entirety by reference to, our amended and restated certificate of
incorporation, our bylaws and our warrant agreement, each of which is incorporated by reference as an exhibit to our Annual Report on Form 10-K for the year ended December 31, 2021 (the
“Report”) of which this Exhibit 4.5 is a part. 
 Defined terms used herein but not otherwise defined shall have the meaning
ascribed to such terms in the Report. 
 Units 

Each unit consists of one share of Class A common stock and one-fourth of one redeemable warrant.
Each whole warrant entitles the holder thereof to purchase one share of Class A common stock at a price of $11.50 per share. Pursuant to the warrant agreement, a warrant holder may exercise its warrants only for a whole number of the shares of
the Company’s Class A common stock. 
 Class A Common Stock 

Stockholders of record are entitled to one vote for each share held on all matters to be voted on by stockholders. Holders of Class A
common stock and holders of Class B common stock will vote together as a single class on all matters submitted to a vote of our stockholders except as required by law. There is no cumulative voting with respect to the election of directors,
with the result that the holders of a majority of the shares voted for the election of directors can elect all of the directors. Our stockholders are entitled to receive ratable dividends when, as and if declared by the board of directors out of
funds legally available therefor. 
 We will provide our public stockholders with the opportunity to redeem all or a portion of their public
shares upon the completion of our initial business combination at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the trust account calculated as of two business
days prior to the consummation of our initial business combination, including interest earned on the funds held in the trust account (net of permitted withdrawals), divided by the number of then outstanding public shares, subject to the limitations
described herein. Our initial stockholders, sponsor, officers and directors have entered into a letter agreement with us, pursuant to which they have agreed to waive their redemption rights with respect to any founder shares and public shares they
hold in connection with the completion of our initial business combination. 
 If we seek stockholder approval of our initial business
combination and we do not conduct redemptions in connection with our initial business combination pursuant to the tender offer rules, our amended and restated certificate of incorporation provides that a public stockholder, together with any
affiliate of such stockholder or any other person with whom such stockholder is acting in concert or as a “group” (as defined under Section 13 of the Exchange Act), will be restricted from redeeming its shares with respect to Excess
Shares, without our prior consent. However, we would not be restricting our stockholders’ ability to vote all of their shares (including Excess Shares) for or against our initial business combination. Our stockholders’ inability to redeem
the Excess Shares will reduce their influence over our ability to complete our initial business combination, and such stockholders could suffer a material loss in their investment if they sell such Excess Shares on the open market. Additionally,
such stockholders will not receive redemption distributions with respect to the Excess Shares if we complete our initial business combination. And, as a result, such stockholders will continue to hold that number of shares exceeding 15% and, in
order to dispose such shares would be required to sell their shares in open market transactions, potentially at a loss. 











 In the event of a liquidation, dissolution or winding up of the company after a business
combination, our stockholders are entitled to share ratably in all assets remaining available for distribution to them after payment of liabilities and after provision is made for each class of shares, if any, having preference over the common
stock. Our stockholders have no preemptive or other subscription rights. There are no sinking fund provisions applicable to the common stock, except that we will provide our public stockholders with the opportunity to redeem their public shares for
cash at a per share price equal to the aggregate amount then on deposit in the trust account, including interest earned on the funds held in the trust account (net of permitted withdrawals), divided by the number of then outstanding public shares,
upon the completion of our initial business combination, subject to the limitations described in the Report. 
 Redeemable Warrants 

Each whole warrant entitles the registered holder to purchase one share of Class A common stock at a price of $11.50 per share, subject to
adjustment as discussed below, at any time commencing on the later of March 4, 2022 and 30 days after the completion of our initial business combination, except as discussed in the immediately succeeding paragraph. Pursuant to the warrant
agreement, a warrant holder may exercise its warrants only for a whole number of shares of Class A common stock. 
 We will not be
obligated to deliver any Class A common stock pursuant to the exercise of a warrant and will have no obligation to settle such warrant exercise unless a registration statement under the Securities Act with respect to the Class A common
stock underlying the warrants is then effective and a prospectus relating thereto is current, subject to our satisfying our obligations described below with respect to registration. No warrant will be exercisable and we will not be obligated to
issue a share of Class A common stock upon exercise of a warrant unless the share of Class A common stock issuable upon such warrant exercise has been registered, qualified or deemed to be exempt under the securities laws of the state of
residence of the registered holder of the warrants. In the event that the conditions in the two immediately preceding sentences are not satisfied with respect to a warrant, the holder of such warrant will not be entitled to exercise such warrant and
such warrant may have no value and expire worthless. In no event will we be required to net cash settle any warrant. In the event that a registration statement is not effective for the exercised warrants, the purchaser of a unit containing such
warrant will have paid the full purchase price for the unit solely for the share of Class A common stock underlying such unit. 
 We
have agreed that as soon as practicable, but in no event later than fifteen (15) business days after the closing of our initial business combination, we will use our best efforts to file with the SEC a registration statement for the
registration, under the Securities Act, of the Class A common stock issuable upon exercise of the warrants. We will use our best efforts to cause the same to become effective and to maintain the effectiveness of such registration statement, and
a current prospectus relating thereto, until the expiration of the warrants in accordance with the provisions of the warrant agreement. If a registration statement covering the shares of Class A common stock issuable upon exercise of the
warrants is not effective by the sixtieth (60th) business day after the closing of our initial business combination, warrant holders may, until such time as there is an effective registration statement and during any period when we will have failed
to maintain an effective registration statement, exercise warrants on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act or another exemption. Notwithstanding the above, if our Class A common stock are at
the time of any exercise of a warrant not listed on a national securities exchange such that they satisfy the definition of a “covered security” under Section 18(b)(1) of the Securities Act, we may, at our option, require holders of
public warrants who exercise their warrants to do so on a “cashless basis” in accordance with Section 3(a)(9) of the Securities Act and, in the event we so elect, we will not be required to file or maintain in effect a registration
statement, and in the event we do not so elect, we will use our best efforts to register or qualify the shares under applicable blue sky laws to the extent an exemption is not available. In such event, each holder would pay the exercise price by
surrendering the warrants for that number of shares of our Class A common stock equal to the lesser of (A) the quotient obtained by dividing (x) the product of the number of shares of our Class A common stock underlying the
warrants, multiplied by the excess of the “fair market value” (defined below) less the exercise price of the warrants by (y) the fair market value and (B) 0.361. The “fair market value” as used in this paragraph shall mean
the volume weighted average price of our Class A common stock for the 10 trading days ending on the trading day prior to the date on which the notice of exercise is received by the warrant agent. 

Redemption of warrants when the price per Class A share equals or exceeds $18.00 

Once the warrants become exercisable, we may redeem the warrants (except as described herein with respect to the private placement warrants):

  

	 	•	 	 in whole and not in part; 














	 	•	 	 at a price of $0.01 per warrant; 



 

	 	•	 	 upon a minimum of 30 days’ prior written notice of redemption
(the “30-day redemption period”) to each warrant holder; and 


  

	 	•	 	 if, and only if, the closing price of our Class A common stock equals or exceeds $18.00 per share (as
adjusted for adjustments to the number of shares issuable upon exercise or the exercise price of a warrant as described under the heading “—Warrants—Public Stockholders’ Warrants—Anti-Dilution Adjustments”) for any 20
trading days within a 30-trading day period ending on the third trading day prior to the date on which we send the notice of redemption to the warrant holders. 



We will not redeem the warrants as described above unless a registration statement under the Securities Act covering the issuance of the
shares of our Class A common stock issuable upon exercise of the warrants is then effective and a current prospectus relating to those shares of our Class A common stock is available throughout
the 30-day redemption period. If and when the warrants become redeemable by us, we may exercise our redemption right even if we are unable to register or qualify the underlying securities for sale
under all applicable state securities laws. 
 Redemption of Warrants When the Price Per Class A Share Equals or Exceeds $10.00 

Once the warrants become exercisable, we may redeem the warrants: 
  

	 	•	 	 in whole and not in part; 



 

	 	•	 	 at $0.10 per warrant upon a minimum of 30 days’ prior written notice of redemption provided that holders
will be able to exercise their warrants on a cashless basis prior to redemption and receive that number of shares of our Class A common stock to be determined by reference to the table below, based on the redemption date and the “fair
market value” of shares of our Class A common stock (as defined below) except as otherwise described below; 


  

	 	•	 	 if, and only if, the closing price of shares of our Class A common stock equals or exceeds $10.00 per share
(as adjusted for adjustments to the number of shares issuable upon exercise or the exercise price of a warrant as described under the heading “—Warrants—Public Stockholders’ Warrants—Anti-Dilution Adjustments”) for any
20 trading days within the 30-trading day period ending on the third trading day prior to the date on which we send the notice of redemption to the warrant holders; and 



 

	 	•	 	 if the closing price of our Class A common stock for any 20 trading days within a 30-trading day period ending on the third trading day prior to the date on which we send the notice of redemption to the warrant holders is less than $18.00 per share (as adjusted for adjustments to the
number of shares issuable upon exercise or the exercise price of a warrant as described under the heading “—Warrants—Public Stockholders’ Warrants—Anti-Dilution Adjustments”), the private placement warrants must also be
concurrently called for redemption on the same terms as the outstanding public warrants, as described above. 


 Beginning
on the date the notice of redemption is given until the warrants are redeemed or exercised, holders may elect to exercise their warrants on a cashless basis. The numbers in the table below represent the number of shares of our Class A
common stock that a warrant holder will receive upon such cashless exercise in connection with a redemption by us pursuant to this redemption feature, based on the “fair market value” of shares of our Class A common stock on the
corresponding redemption date (assuming holders elect to exercise their warrants and such warrants are not redeemed for $0.10 per warrant), determined for these purposes based on the volume weighted average price of shares of our Class A common
stock during the 10 trading days immediately following the date on which the notice of redemption is sent to the holders of warrants, and the number of months that the corresponding redemption date precedes the expiration date of the warrants, each
as set forth in the table below. We will provide our warrant holders with the final fair market value no later than one business day after the 10-trading day period described above ends. 











 Pursuant to the warrant agreement, references above to shares of our Class A common
stock shall include any security other than shares of our Class A common stock into which the shares of our Class A common stock have been converted or exchanged for in the event we are not the surviving company in our initial business
combination. The numbers in the table below will not be adjusted when determining the number of such securities to issue upon exercise of the warrants if we are not the surviving entity following our initial business combination. However, the share
prices set forth in the column headings of the table below will be adjusted as of any date on which the number of shares issuable upon exercise of a warrant or the exercise price of a warrant is adjusted as set forth under the heading
“—Anti-Dilution Adjustments” below. 
 If the number of shares issuable upon exercise of a warrant is adjusted, the adjusted
share prices in the column headings will equal the share prices immediately prior to such adjustment, multiplied by a fraction, the numerator of which is the number of shares deliverable upon exercise of a warrant immediately prior to such
adjustment and the denominator of which is the number of shares deliverable upon exercise of a warrant as so adjusted. The number of shares in the table below shall be adjusted in the same manner and at the same time as the number of shares issuable
upon exercise of a warrant. If the exercise price of a warrant is adjusted, (a) in the case of an adjustment pursuant to the sixth paragraph under the heading “—Anti-Dilution Adjustments” below, the adjusted share prices in the
column headings will equal the unadjusted share price multiplied by a fraction, the numerator of which is the higher of the Market Value and the Newly Issued Price as set forth under the heading “ —Anti-Dilution Adjustments” and the
denominator of which is $10.00 and (b) in the case of an adjustment pursuant to the third paragraph under the heading “—Anti-Dilution Adjustments” below, the adjusted share prices in the column headings will equal the unadjusted
share price less the decrease in the exercise price of a warrant pursuant to such exercise price adjustment. 
  

																																					
	Redemption Date
(period to expiration of
warrants)                                        
	  	Fair Market Value of Shares of our Class A common stock	 
	  	£$10.00	 	  	$11.00	 	  	$12.00	 	  	$13.00	 	  	$14.00	 	  	$15.00	 	  	$16.00	 	  	$17.00	 	  	3$18.00	 
	 60 months
	  	 	0.237	 	  	 	0.259	 	  	 	0.278	 	  	 	0.295	 	  	 	0.311	 	  	 	0.325	 	  	 	0.338	 	  	 	0.350	 	  	 	0.361	 
	 57 months
	  	 	0.233	 	  	 	0.255	 	  	 	0.275	 	  	 	0.293	 	  	 	0.309	 	  	 	0.324	 	  	 	0.338	 	  	 	0.350	 	  	 	0.361	 
	 54 months
	  	 	0.229	 	  	 	0.251	 	  	 	0.272	 	  	 	0.291	 	  	 	0.307	 	  	 	0.323	 	  	 	0.337	 	  	 	0.350	 	  	 	0.361	 
	 51 months
	  	 	0.225	 	  	 	0.248	 	  	 	0.269	 	  	 	0.288	 	  	 	0.305	 	  	 	0.321	 	  	 	0.336	 	  	 	0.349	 	  	 	0.361	 
	 48 months
	  	 	0.220	 	  	 	0.243	 	  	 	0.265	 	  	 	0.285	 	  	 	0.303	 	  	 	0.320	 	  	 	0.335	 	  	 	0.349	 	  	 	0.361	 
	 45 months
	  	 	0.214	 	  	 	0.239	 	  	 	0.261	 	  	 	0.282	 	  	 	0.301	 	  	 	0.318	 	  	 	0.334	 	  	 	0.348	 	  	 	0.361	 
	 42 months
	  	 	0.208	 	  	 	0.234	 	  	 	0.257	 	  	 	0.278	 	  	 	0.298	 	  	 	0.316	 	  	 	0.333	 	  	 	0.348	 	  	 	0.361	 
	 39 months
	  	 	0.202	 	  	 	0.228	 	  	 	0.252	 	  	 	0.275	 	  	 	0.295	 	  	 	0.314	 	  	 	0.331	 	  	 	0.347	 	  	 	0.361	 
	 36 months
	  	 	0.195	 	  	 	0.222	 	  	 	0.247	 	  	 	0.271	 	  	 	0.292	 	  	 	0.312	 	  	 	0.330	 	  	 	0.346	 	  	 	0.361	 
	 33 months
	  	 	0.187	 	  	 	0.215	 	  	 	0.241	 	  	 	0.266	 	  	 	0.288	 	  	 	0.309	 	  	 	0.328	 	  	 	0.345	 	  	 	0.361	 
	 30 months
	  	 	0.179	 	  	 	0.208	 	  	 	0.235	 	  	 	0.261	 	  	 	0.284	 	  	 	0.306	 	  	 	0.326	 	  	 	0.345	 	  	 	0.361	 
	 27 months
	  	 	0.170	 	  	 	0.199	 	  	 	0.228	 	  	 	0.255	 	  	 	0.280	 	  	 	0.303	 	  	 	0.324	 	  	 	0.343	 	  	 	0.361	 
	 24 months
	  	 	0.159	 	  	 	0.190	 	  	 	0.220	 	  	 	0.248	 	  	 	0.274	 	  	 	0.299	 	  	 	0.322	 	  	 	0.342	 	  	 	0.361	 
	 21 months
	  	 	0.148	 	  	 	0.179	 	  	 	0.210	 	  	 	0.240	 	  	 	0.268	 	  	 	0.295	 	  	 	0.319	 	  	 	0.341	 	  	 	0.361	 
	 18 months
	  	 	0.135	 	  	 	0.167	 	  	 	0.200	 	  	 	0.231	 	  	 	0.261	 	  	 	0.289	 	  	 	0.315	 	  	 	0.339	 	  	 	0.361	 
	 15 months
	  	 	0.120	 	  	 	0.153	 	  	 	0.187	 	  	 	0.220	 	  	 	0.253	 	  	 	0.283	 	  	 	0.311	 	  	 	0.337	 	  	 	0.361	 
	 12 months
	  	 	0.103	 	  	 	0.137	 	  	 	0.172	 	  	 	0.207	 	  	 	0.242	 	  	 	0.275	 	  	 	0.306	 	  	 	0.335	 	  	 	0.361	 
	 9 months
	  	 	0.083	 	  	 	0.117	 	  	 	0.153	 	  	 	0.191	 	  	 	0.229	 	  	 	0.266	 	  	 	0.300	 	  	 	0.332	 	  	 	0.361	 
	 6 months
	  	 	0.059	 	  	 	0.092	 	  	 	0.130	 	  	 	0.171	 	  	 	0.213	 	  	 	0.254	 	  	 	0.292	 	  	 	0.328	 	  	 	0.361	 
	 3 months
	  	 	0.030	 	  	 	0.060	 	  	 	0.100	 	  	 	0.145	 	  	 	0.193	 	  	 	0.240	 	  	 	0.284	 	  	 	0.324	 	  	 	0.361	 
	 0 months
	  	 	—  	 	  	 	—  	 	  	 	0.042	 	  	 	0.115	 	  	 	0.179	 	  	 	0.233	 	  	 	0.281	 	  	 	0.324	 	  	 	0.361	 












 A holder of a warrant may notify us in writing in the event it elects to be subject to a
requirement that such holder will not have the right to exercise such warrant, to the extent that after giving effect to such exercise, such person (together with such person’s affiliates), to the warrant agent’s actual knowledge, would
beneficially own in excess of 4.9% or 9.8% (as specified by the holder) of the Class A common stock outstanding immediately after giving effect to such exercise. 

The warrants have certain anti-dilution and adjustments rights upon certain events. 

In addition, if (x) we issue additional shares of Class A common stock or equity-linked securities for capital raising purposes in
connection with the closing of our initial business combination, at an issue price or effective issue price of less than $9.20 per share of Class A common stock (with such issue price or effective issue price to be determined in good faith by
our board of directors and, in the case of any such issuance to our initial stockholders or their affiliates, without taking into account any founder shares held by our initial stockholders or such affiliates, as applicable, prior to such issuance)
(the “Newly Issued Price”), (y) the aggregate gross proceeds from such issuances represent more than 60% of the total equity proceeds, and interest thereon, available for the funding of our initial business combination on the date of the
consummation of our initial business combination (net of redemptions) and (z) the volume weighted average trading price of our Class A common stock during the 20 trading day period starting on the trading day after the day on which we
consummate our initial business combination (such price, the “Market Value”) is below $9.20 per share, the exercise price of the warrants will be adjusted (to the nearest cent) to be equal to 115% of the higher of the Market Value and the
Newly Issued Price, the $18.00 per share redemption trigger price described above under “Redemption of Warrants When the Price per Class A Share Equals or Exceeds $18.00” will be adjusted (to the nearest cent) to be equal to 180% of
the higher of the Market Value and the Newly Issued Price, and the $10.00 per share redemption trigger price described above under “Redemption of Warrants When the Price per Class A Share Equals or Exceeds $10.00” will be adjusted (to
the nearest cent) to be equal to the higher of the Market Value and the Newly Issued Price. 
 The warrants will be issued in registered
form under a warrant agreement between Continental, as warrant agent, and us. The warrant agreement provides that the terms of the warrants may be amended without the consent of any holder to cure any ambiguity or correct any defective provision,
and that all other modifications or amendments will require the vote or written consent of the holders of a majority of the then outstanding public warrants, and, solely with respect to any amendment to the terms of the private placement warrants, a
majority of the then outstanding private placement warrants. You should review a copy of the warrant agreement, which was filed with the Registration Statement, for a complete description of the terms and conditions applicable to the warrants. 

The warrants may be exercised upon surrender of the warrant certificate on or prior to the expiration date at the offices of the warrant
agent, with the exercise form on the reverse side of the warrant certificate completed and executed as indicated, accompanied by full payment of the exercise price (or on a cashless basis, if applicable), by certified or official bank check payable
to us, for the number of warrants being exercised. The warrant holders do not have the rights or privileges of holders of common stock and any voting rights until they exercise their warrants and receive Class A common stock. After the issuance
of Class A common stock upon exercise of the warrants, each holder will be entitled to one vote for each share held of record on all matters to be voted on by stockholders. 

No fractional shares will be issued upon exercise of the warrants. If, upon exercise of the warrants, a holder would be entitled to receive a
fractional interest in a share, we will, upon exercise, round down to the nearest whole number the number of shares of Class A common stock to be issued to the warrant holder.