BUREAU OF NATIONAL AFFAIRS INC

Q: Jun 18 2011

Q: Mar 26 2011

FY: Dec 31 2010

Q: Sep 11 2010

Q: Jun 19 2010

Q: Apr 13 2010

FY: Dec 31 2009

Q: Sep 12 2009

Q: Jun 20 2009

Q: Mar 28 2009

FY: Dec 31 2008

Q: Sep 6 2008

Q: Jun 14 2008

Q: Mar 22 2008

FY: Dec 31 2007

Q: Sep 8 2007

Q: Jun 16 2007

Q: Mar 24 2007

FY: Dec 31 2006

Q: Jun 17 2006

Material Modifications to Rights of Security Holders

5.02,5.03,8.01,9.01

1.01,5.02,9.01

5.07

8.01

5.07

5.02,5.03

5.03

2.01

4.01

5.02

5.02

5.02

4.02

4.02

1.01

1.01,9.01

5.03,9.01

7.01,9.01

5.02

Certification of termination of registration of a class of securities (Section 12(g))

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Bloomberg Inc

CLARK CAROL A

Mazzeo Elizabeth

GRAUER PETER T

Geller Martin J.

Bloomberg Inc; Bloomberg-BNA Holdings Inc.

Ambrosini Robert P

Blakely Paul A

BOLBACH CYNTHIA J

Kaplan Marcia P

LAVINE GILBERT S

BUMGARDNER EUNICE L

MCCAFFERY GREGORY C

McKewen Darren P

Schneble James R

Victor David M

WOJCIK PAUL N

KORPHAGE GEORGE J

Brass Acquisition Corp

BUREAU OF NATIONAL AFFAIRS INC

Letter from the SEC

No description available

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)

Annual reports of employee stock purchase savings and similar plans pursuant to Section 15(d)