SERONO
S.A.
|
(Name
of Issuer)
Bearer
Shares, nominal value CHF 25 per share
|
(Title
of Class of Securities)
CINS: H32560106
|
(CUSIP
Number)
June
17, 2005
|
(Date
of Event Which Requires Filing of this
Statement)
|
o |
Rule
13d-1(b)
|
o |
Rule
13d-1(c)
|
x |
Rule
13d-1(d)
|
CUSIP No. CINS: H32560106 |
13G/A
|
Page
2-------------- of --------------11
Pages
|
1
|
Names
of Reporting Persons/I.R.S. Identification Nos. of Above Persons
(Entities
Only)
Ernesto
Bertarelli
|
|
2
|
Check
the Appropriate Box if a Member of a Group (a)
x
(See
Instructions) (b)
o
|
|
3
|
SEC
Use Only
|
|
4
|
Citizenship
or Place of Organization
Switzerland
|
|
Number
of
Shares
Beneficially
Owned
by
Each
Reporting
Person
With
|
5
|
Sole
Voting Power
5,053,265
|
6
|
Shared
Voting Power
0
|
|
7
|
Sole
Dispositive Power
5,053,265
|
|
8
|
Shared
Dispositive Power
0
|
|
9
|
Aggregate
Amount Beneficially Owned by Each Reporting Person
5,053,265
|
|
10
|
Check
if the Aggregate Amount in Row (9) Excludes Certain Shares
o
(See
Instructions)
|
|
11
|
Percent
of Class Represented by Amount in Row (9)
49.7%
|
|
12
|
Type
of Reporting Person (See
Instructions)
IN
|
CUSIP No. CINS: H32560106 |
13G/A
|
Page 3--------------
of --------------11 Pages
|
1
|
Names
of Reporting Persons/I.R.S. Identification Nos. of Above Persons
(Entities
Only)
Maria-Iris
Bertarelli
|
|
2
|
Check
the Appropriate Box if a Member of a Group (a)
o
(See
Instructions) (b)
o
|
|
3
|
SEC
Use Only
|
|
4
|
Citizenship
or Place of Organization
Switzerland
|
|
Number
of
Shares
Beneficially
Owned
by
Each
Reporting
Person
With
|
5
|
Sole
Voting Power
0
|
6
|
Shared
Voting Power
0
|
|
7
|
Sole
Dispositive Power
0
|
|
8
|
Shared
Dispositive Power
0
|
|
9
|
Aggregate
Amount Beneficially Owned by Each Reporting Person
0
|
|
10
|
Check
if the Aggregate Amount in Row (9) Excludes Certain Shares x
(See
Instructions)
|
|
11
|
Percent
of Class Represented by Amount in Row (9)
0%
|
|
12
|
Type
of Reporting Person (See
Instructions)
IN
|
CUSIP No. CINS: H32560106 |
13G/A
|
Page 4--------------
of --------------11 Pages
|
1
|
Names
of Reporting Persons/I.R.S. Identification Nos. of Above Persons
(Entities
Only)
Donata
Bertarelli Spaeth
|
|
2
|
Check
the Appropriate Box if a Member of a Group (a)
o
(See
Instructions) (b)
o
|
|
3
|
SEC
Use Only
|
|
4
|
Citizenship
or Place of Organization
Switzerland
|
|
Number
of
Shares
Beneficially
Owned
by
Each
Reporting
Person
With
|
5
|
Sole
Voting Power
0
|
6
|
Shared
Voting Power
0
|
|
7
|
Sole
Dispositive Power
0
|
|
8
|
Shared
Dispositive Power
0
|
|
9
|
Aggregate
Amount Beneficially Owned by Each Reporting Person
0
|
|
10
|
Check
if the Aggregate Amount in Row (9) Excludes Certain Shares x
(See
Instructions)
|
|
11
|
Percent
of Class Represented by Amount in Row (9)
0%
|
|
12
|
Type
of Reporting Person (See
Instructions)
IN
|
CUSIP No. CINS: H32560106 |
13G/A
|
Page 5--------------
of --------------11 Pages
|
1
|
Names
of Reporting Persons/I.R.S. Identification Nos. of Above Persons
(Entities
Only)
Bertarelli
& Cie
|
|
2
|
Check
the Appropriate Box if a Member of a Group (a)
x
(See
Instructions) (b)
o
|
|
3
|
SEC
Use Only
|
|
4
|
Citizenship
or Place of Organization
Switzerland
|
|
Number
of
Shares
Beneficially
Owned
by
Each
Reporting
Person
With
|
5
|
Sole
Voting Power
5,036,930
|
6
|
Shared
Voting Power
0
|
|
7
|
Sole
Dispositive Power
5,036,930
|
|
8
|
Shared
Dispositive Power
0
|
|
9
|
Aggregate
Amount Beneficially Owned by Each Reporting Person
5,036,930
|
|
10
|
Check
if the Aggregate Amount in Row (9) Excludes Certain Shares x
(See
Instructions)
|
|
11
|
Percent
of Class Represented by Amount in Row (9)
49.6%
|
|
12
|
Type
of Reporting Person (See
Instructions)
OO
|
CUSIP No. CINS: H32560106 |
13G/A
|
Page 6--------------
of --------------11 Pages
|
Item
1(a).
|
Name
of Issuer:
|
Item
1(b).
|
Address
of Issuer’s Principal Executive
Offices:
|
Item
2(a).
|
Names
of Persons
Filing:
|
Item
2(b).
|
Address
of Principal Business Office or, if None,
Residence:
|
Item
2(c).
|
Citizenship:
|
CUSIP No. CINS: H32560106 |
13G/A
|
Page 7--------------
of --------------11
Pages
|
Item
2(e).
|
CUSIP
Number:
|
Item
3.
|
If
This Statement is Filed Pursuant to Rule 13d-1(b), or 13d-2(b)
or (c),
Check Whether the Person Filing is
a:
|
Not
applicable.
|
Item
4.
|
Ownership.
|
(a)
|
Amount
beneficially owned: 5,053,265 shares, including 5,036,930 shares
held by
Bertarelli & Cie and 16,300 that Mr. Bertarelli has the right to
acquire within 60 days after June 27, 2005 upon the exercise of
stock
options.
|
(b)
|
Percent
of class: 49.7%
|
(c)
|
Number
of shares as to which the person has:
|
(i)
|
Sole
power to vote or to direct the vote:
5,053,265
|
(ii)
|
Shared
power to vote or to direct the vote:
0
|
(iii)
|
Sole
power to dispose or to direct the disposition of:
5,053,265
|
(iv)
|
Shared
power to dispose or to direct the disposition of:
0
|
(a)
|
Amount
beneficially owned: 0
|
(b)
|
Percent
of class: 0%
|
(c)
|
Number
of shares as to which the person has:
|
(i)
|
Sole
power to vote or to direct the vote:
0
|
(ii)
|
Shared
power to vote or to direct the vote:
0
|
(iii)
|
Sole
power to dispose or to direct the disposition of:
0
|
(iv)
|
Shared
power to dispose or to direct the disposition of: 0
|
CUSIP No. CINS: H32560106 |
13G/A
|
Page 8--------------
of --------------11
Pages
|
(a)
|
Amount
beneficially owned:
5,036,930
|
(b)
|
Percent
of class: 49.6%
|
(c)
|
Number
of shares as to which the person has:
|
(i)
|
Sole
power to vote or to direct the vote:
5,036,930
|
(ii)
|
Shared
power to vote or to direct the vote:
0
|
(iii)
|
Sole
power to dispose or to direct the disposition of:
5,036,930
|
(iv)
|
Shared
power to dispose or to direct the disposition of:
0
|
CUSIP No. CINS: H32560106 |
13G/A
|
Page 9--------------
of --------------11
Pages
|
Item
5.
|
Ownership
of Five Percent or Less of a
Class.
|
Item
6.
|
Ownership
of More than Five Percent on Behalf of Another
Person.
|
Item
7.
|
Identification
and Classification of the Subsidiary Which Acquired the Security
Being
Reported on by the Parent Holding Company or Control
Person.
|
Item
8.
|
Identification
and Classification of Members of the
Group.
|
Item
9.
|
Notice
of Dissolution of
Group.
|
Item
10.
|
Certifications.
|
CUSIP No. CINS: H32560106 |
13G/A
|
Page 10--------------
of --------------11
Pages
|
*
|
|
Ernesto Bertarelli
*
|
|
Maria-Iris Bertarelli
*
|
|
Donata Bertarelli Spaeth
|
|
BERTARELLI
& CIE
/s/
Thomas J. Plotz
|
|
By:
Thomas J. Plotz
Title:
Attorney-in-Fact
|
*
By:
|
/s/ Thomas J. Plotz
|
|
Thomas J. Plotz, Attorney-in-Fact
|
CUSIP No. CINS: H32560106 |
13G/A
|
Page 11--------------
of --------------11
Pages
|
*1.
|
Power
of Attorney of Ernesto Bertarelli
|
*2.
|
Power
of Attorney of Maria-Iris
Bertarelli
|
*3.
|
Power
of Attorney of Donata Bertarelli
Spaeth
|
*4.
|
Power
of Attorney of Bertarelli & Cie
|
*5.
|
Joint
Filing Agreement Pursuant to Rule
13d-1(k)(1)
|