BUREAU OF NATIONAL AFFAIRS INC

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

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

Material Modifications to Rights of Security Holders

Tender offer statement by a third party (amendment)

No description available

5.02,5.03,8.01,9.01

Letter from the SEC

1.01,5.02,9.01

No description available

General form for quarterly reports under Section 13 or 15(d)

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

General form for quarterly reports under Section 13 or 15(d)

5.07

8.01

Annual report pursuant to Section 13 or 15(d)

Definitive Proxy Statement

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

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

General form for quarterly reports under Section 13 or 15(d)

5.07

Annual report pursuant to Section 13 or 15(d)

Definitive Proxy Statement

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

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

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

5.02,5.03

5.03

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

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

General form for quarterly reports under Section 13 or 15(d)

Annual report pursuant to Section 13 or 15(d)

Definitive Proxy Statement

General form for quarterly reports under Section 13 or 15(d)

2.01

General form for quarterly reports under Section 13 or 15(d)

4.01

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

5.02

General form for quarterly reports under Section 13 or 15(d)

5.02

Annual report pursuant to Section 13 or 15(d)

Definitive Proxy Statement

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

5.02

General form for quarterly reports under Section 13 or 15(d)

4.02

4.02

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

1.01

Definitive Proxy Statement

1.01,9.01

5.03,9.01

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

7.01,9.01

Definitive Proxy Statement

5.02

Definitive Proxy Statement

Definitive Proxy Statement

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

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

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

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

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

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