SPX Technologies, Inc. — Major Shareholding Notification 2006

May 12, 2006

SC 13G 1 sc13g_051006.htm SCHEDULE 13G Schedule 13G Licensed to: Vedder, Price, Kaufman, Kammholz Document Created using EDGARizer HTML 3.0.4.0 Copyright 2006 EDGARfilings, Ltd., an IEC company. All rights reserved EDGARfilings.com

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

SCHEDULE 13G

| Under
the Securities Exchange Act of 1934 |
| --- |
| SPX
Corp. |
| (Name
of Issuer) |
| Common
Stock |

(Title of Class of Securities)

784635104

| (CUSIP
Number) |
| --- |
| June
23, 2004 (this constitutes a late
filing) |
| (Date
of Event Which Requires Filing of this Statement) |
| Check
the appropriate box to designate the rule pursuant to which this
Schedule
is filed: |
| o Rule
13d-1(b) |
| x Rule
13d-1(c) |
| o Rule
13d-1(d) |
| The
remainder of this cover page shall be filled out for a reporting
person’s
initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information
which
would alter the disclosures provided in a prior cover
page. |
| The
information required in the remainder of this cover page shall not
be
deemed to be “filed” for the purpose of Section 18 of the Securities
Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of
that section of the Act but shall be subject to all other provisions
of
the Act (however, see the Notes). |

1 of 6 pages

CUSIP No. 784635104

| 1. | Names
of Reporting Persons. I.R.S.
Identification Nos. of above persons (entities only). John
B. Blystone |
| --- | --- |
| 2. | Check the Appropriate Box if a Member of a
Group (See
Instructions) |

(a)
(b)

1. SEC Use Only

2. Citizenship or Place of Organization U.S. Citizen

| Number
of Shares Beneficially Owned
by Each Reporting Person
With: | 5,197,962
common shares (1) (4,320,236 (2) as of May
5,
2006) |
| --- | --- |
| 6. Shared
Voting Power | Not
applicable |
| 7. Sole
Dispositive Power | 5,197,962
common shares (1) ( 4,320,236 (2) as of May
5,
2006) |
| 8. Shared
Dispositive Power | Not
applicable |

1. Aggregate Amount Beneficially Owned by Each Reporting Person 5,197,962 common shares (1) ( 4,320,236 (2) as of May 5, 2006)

2. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

3. Percent of Class Represented by Amount in Row (9) 6.8% (based on 75,962,613 common shares of the Issuer issued and outstanding as of April 28, 2004) (7.2% as of May 5, 2006 based on 59,771,734 common shares of the Issuer issued and outstanding as of May 5, 2006)

4. Type of Reporting Person (See Instructions) IN

| (1) | Includes
4,053,973 shares of common stock issuable upon the exercise of vested
options and 1,143,989 shares of common stock owned
outright. |
| --- | --- |
| (2) | Includes
4,320,226 shares of common stock issuable upon the exercise of vested
options and 10 shares of common stock owned outright. |

2 of 6 pages

CUSIP No. 784635104

ITEM 1.

| (a) | Name
of Issuer |
| --- | --- |
| | SPX
Corp. |
| (b) | Address
of Issuer’s Principal Executive Offices |
| | 13515
Ballantyne Corporate Place Charlotte,
NC 28277 |

ITEM 2.

| (a) | Name
of Person Filing |
| --- | --- |
| | John
B. Blystone |
| (b) | Address
of Principal Business Office or, if none, Residence |
| | c/o
Vedder, Price, Kaufman & Kammholz, P.C. 222
North LaSalle Street Chicago,
Illinois 60601 Attention:
James S. Montana, Jr., Esq. |

(c)	Citizenship
	U.S.
Citizen
(d)	Title
of Class of Securities
	Common
Stock

(e) CUSIP Number 784635104

ITEM 3. If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

| (a) | o | Broker or dealer registered under section
15
of the Act (15 U.S.C. 78o) |
| --- | --- | --- |
| (b) | o | Bank as defined in
section
3(a)(6) of the Act (15 U.S.C. 78c). |
| (c) | o | Insurance company as defined in section
3(a)(19) of the Act (15 U.S.C. 78c). |
| (d) | o | Investment company registered under
section 8
of the Investment Company Act of 1940 (15 U.S.C.
80a-8). |

| (e) | o | An investment adviser
in
accordance with §240.13d-1(b)(1)(ii)(E). |
| --- | --- | --- |
| (f) | o | An employee benefit plan or endowment
fund in
accordance with §240.13d-1(b)(1)(ii)(F). |
| (g) | o | A parent holding company or control
person in
accordance with §240.13d-1(b)(1)(ii)(G). |

(h) o A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813).

(i) o A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3).

(j) o Group, in accordance with §240.13d-1(b)(1)(ii)(J).

3 of 6 pages

CUSIP No. 784635104

ITEM 4. Ownership.

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a)	Amount beneficially owned:
	5,197,962 common shares (1) (4,320,236 (2) as of May 5,
2006)
(b)	Percent
of class:
	6.8%
(based on 75,962,613 common shares of the Issuer issued and
outstanding as
of April 28, 2004) (7.2% as of May 5, 2006 based on 59,771,734 common
shares of the Issuer issued and outstanding as of May 5,
2006)

(c) Number of shares as to which the person has:

(i) Sole power to vote or to direct the vote : 5,197,962 common shares (1) (4,320,236 (2) as of May 5, 2006).

(ii) Shared power to vote or to direct the vote : Not applicable.

(iii) Sole power to dispose or to direct the disposition of: 5,197,962 common shares (1) (4,320,236 (2) as of May 5, 2006).

(iv) Shared power to dispose or to direct the disposition of: Not applicable .

ITEM 5. Ownership of Five Percent or Less of a Class.

Not applicable .

ITEM 6. Ownership of More than Five Percent on Behalf of Another Person.

Not applicable.

ITEM 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company .

Not applicable.

ITEM 8. Identification and Classification of Members of the Group.

Not applicable.

ITEM 9. Notice of Dissolution of Group.

Not applicable.

---

| (1) | Includes
4,053,973 shares of common stock issuable upon the exercise of vested
options and 1,143,989 shares of common stock owned
outright. |
| --- | --- |
| (2) | Includes
4,320,226 shares of common stock issuable upon the exercise of vested
options and 10 shares of common stock owned outright. |

4 of 6 pages

CUSIP No . 784635104

| Item 10. |
| --- |
| By
signing below I certify that, to the best of my knowledge and belief,
the
securities referred to above were not acquired and are not held
for the
purpose of or with the effect of changing or influencing the control
of
the issuer of the securities and were not acquired and are not
held in
connection with or as a participation in any transaction having
that
purpose or effect. |

5 of 6 pages

CUSIP No. 784635104

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

| Dated:
May 11, 2006 |
| --- |
| John B. Blystone |

6 of 6 pages