David J Mclachlan Form 4 DYAX / DAVID J MCLACHLAN ownership change

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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X

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

MCLACHLAN DAVID J

(Last) (First) (Middle)

C/O DYAX CORP.

55 NETWORK DRIVE

(Street)

BURLINGTON MA 01803-2756

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
DYAX CORP [ DYAX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
Former director

3. Date of Earliest Transaction (Month/Day/Year)
01/22/2016

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/22/2016		D		137,433	D	(1)	0	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$26.23	01/22/2016		D			16,667	(2)	05/12/2025	Common Stock	16,667	$0(3)	0	D

Explanation of Responses:

1. Disposition of securities in connection with the acquisition of Dyax Corp. by Shire plc pursuant to an Agreement and Plan of Merger dated November 2, 2015 by and among Dyax Corp., Shire plc, Shire Pharmaceuticals International, and Parquet Courts, Inc. (the "Merger Agreement"). At the effective time of the merger, these shares of the common stock of Dyax Corp. (the "Common Stock") were cancelled and converted into the right to receive (a) $37.30 per share in cash and (b) one contractual contingent value right ("CVR") per share, which represents the right to receive a contingent payment of $4.00 in cash if the specified milestone is achieved, pursuant to a Contingent Value Rights Agreement ("CVR Agreement") to be entered into between Shire plc and a rights agent.

2. The options became exercisable in twelve (12) substantially equal installments on each monthly anniversary of the date of grant, May 12, 2015.

3. Pursuant to the terms of the Merger Agreement, at the effective time of the merger, these options to purchase Common Stock (whether vested or unvested) were cancelled and converted into only the right to receive (a) an amount in cash equal to the product of (i) the excess of (A) $37.30 over (B) the exercise price per share of such option, and (ii) the number of shares underlying such Company Option and (b) one CVR for each share subject to such option in accordance with and subject to the CVR Agreement.

Remarks:

	/s/ Stacie S. Aarestad as attorney-in-fact	01/22/2016
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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