UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 13F
FORM 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: 12/31/99
Check here if Amendment ( ); Amendment Number: ( )
This Amendment (Check only one): ( ) is a restatement
( ) adds new holdings entries
Institutional Investment Manager Filing this Report:
Guyasuta Investment Advisors, Inc.
Suite 2734 500 Grant Street
Pittsburgh, PA 15219
Form 13F File Number: 28-4474
The institutional investment manager filing this report and the person by
whom it is signed hereby represent that the person signing the report is
authorized to submit it, that all information contained herein is true,
correct and complete, and that it is understood that all required items,
statements, schedules, lists, and tables, are considered integral parts of
this form.
Person Signing this Report on behalf of Reporting Manager:
Name: Peter F. Mathieson
Title: Managing Director
Phone: 412-765-3330
Signature, Place, and Date of Signing:
_Peter F. Mathieson___ Pittsburgh, PA 15219 February 10, 2000
Signature
Report Type (Check only one):
( x ) 13F HOLDINGS REPORT. (Check here is all holdings of this reporting
manager are reported in this report.)
( ) 13F NOTICE. (Check here if no holdings reported are in this report, and
all holdings are reported by other reporting manager(s).)
<TABLE>
FORM 13F
INFORMATION TABLE
VALUE SHARES/ SH/
PUT/ INVSTMT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN
CALL DSCRETN MANAGERS SOLE SHARED NONE
- ------------------------------ ---------------- --------- -------- -------- ---
- ---- ------- ------------ -------- -------- --------
<S> <C> <C> <C> <C> <C>
<C> <C> <C> <C> <C> <C>
A T & T CORP. COM 030177109 1122 22074 SH
SOLE 22074
ABBOTT LABS COM 002824100 1296 35690 SH
SOLE 35690
AIR EXPRESS INTERNATIONAL COM 009104ab6 4447 137615 SH
SOLE 137615
ALCOA, INC. COM 022249106 6066 73078 SH
SOLE 73078
ALLEGHENY TECHNOLOGIES COM 016900102 560 24970 SH
SOLE 24970
AMERICAN EXPRESS COMPANY COM 025816109 1147 6900 SH
SOLE 6900
AMERICAN HOME PRODUCTS COM 026609107 1782 45400 SH
SOLE 45400
AMERICAN INTERNATIONAL COM 026874107 273 2526 SH
SOLE 2526
ATLANTIC RICHFIELD COM 048825103 413 4780 SH
SOLE 4780
AUTOMATIC DATA PROCESSING COM 053015103 337 6256 SH
SOLE 6256
BANK OF NEW YORK CO. COM 064057102 284 7100 SH
SOLE 7100
BELL ATLANTIC COM 077853109 1103 17916 SH
SOLE 17916
BELLSOUTH COM 079860102 433 9248 SH
SOLE 9248
BEST FOODS COM 126149103 399 7600 SH
SOLE 7600
BP AMOCO PLC ADR COM 055622104 5142 86697 SH
SOLE 86697
BRISTOL MYERS COM 110122108 2797 43581 SH
SOLE 43581
BT FINANCIAL CORP. COM 055763106 812 36895 SH
SOLE 36895
CATERPILLAR COM 149123101 2345 49822 SH
SOLE 49822
CBS CORP. COM 960402105 396 6200 SH
SOLE 6200
CENTERPOINT PROPERTIES COM 151895109 3477 95597 SH
SOLE 95597
CHASE MANHATTAN CORP. COM 161610100 480 6178 SH
SOLE 6178
CHEVRON COM 166751107 3550 40985 SH
SOLE 40985
CHUBB CORPORATION COM 171232101 219 3896 SH
SOLE 3896
CISCO SYSTEMS COM 17275R102 809 7550 SH
SOLE 7550
CITIGROUP COM 173034109 571 10252 SH
SOLE 10252
COCA-COLA CO. COM 191216100 2366 40615 SH
SOLE 40615
COMCAST CLASS A COM 200300101 3016 63000 SH
SOLE 63000
COMCAST CLASS A SPECIAL COM 200300200 8682 171702 SH
SOLE 171702
COMPAQ COM 204493100 308 11374 SH
SOLE 11374
CONEXANT COM 20854p109 1960 29532 SH
SOLE 29532
DEERE COM 244199105 357 8240 SH
SOLE 8240
DIAMOND OFFSHORE COM 25271c102 3195 104549 SH
SOLE 104549
DUPONT COM 263534109 550 8348 SH
SOLE 8348
EMERSON ELECTRIC COM 291011104 4668 81367 SH
SOLE 81367
EXXON MOBIL COM 302290101 2356 29245 SH
SOLE 29245
FEDERAL REALTY COM 313747206 274 14575 SH
SOLE 14575
GANNETT COM 364730101 579 7100 SH
SOLE 7100
GENERAL ELECTRIC COM 369604103 8374 54111 SH
SOLE 54111
GENERAL MOTORS COM 370442105 282 3874 SH
SOLE 3874
H. J. HEINZ CO. COM 423074103 8806 221190 SH
SOLE 221190
HALLIBURTON COM 406216101 332 8260 SH
SOLE 8260
HEWLETT PACKARD COM 428236103 580 5100 SH
SOLE 5100
HOME DEPOT COM 437076102 454 6600 SH
SOLE 6600
I B M COM 459200101 10441 96784 SH
SOLE 96784
INGERSOLL RAND COM 456866102 248 4500 SH
SOLE 4500
INGLES MARKETS COM 457030104 120 10800 SH
SOLE 10800
INTEL CORP. COM 458140100 412 5000 SH
SOLE 5000
INTERNATIONAL PAPER COM 460146103 1378 24409 SH
SOLE 24409
INTERPUBLIC GROUP COM 460690100 3672 63650 SH
SOLE 63650
JOHNSON & JOHNSON COM 478160104 785 8421 SH
SOLE 8421
KELLOGG CO. COM 487836108 584 18942 SH
SOLE 18942
KIMBERLY CLARK COM 494368103 4911 75042 SH
SOLE 75042
L T C PROPERTIES COM 502175102 525 62182 SH
SOLE 62182
LUCENT TECHNOLOGIES COM 549463107 1522 20289 SH
SOLE 20289
MASTECH COM 57632n105 486 19650 SH
SOLE 19650
MAXAM GOLD CORP. COM 57772f102 14 100000 SH
SOLE 100000
MAY DEPT. STORES COM 577778103 213 6600 SH
SOLE 6600
MCGRAW HILL COM 580645109 5688 92303 SH
SOLE 92303
MEDIAONE GROUP COM 912889201 208 2708 SH
SOLE 2708
MELLON FINANCIAL CORP. COM 585509102 561 16478 SH
SOLE 16478
MERCK COM 589331107 2311 34402 SH
SOLE 34402
MERITOR AUTOMOTIVE COM 59000g100 244 12569 SH
SOLE 12569
MERRILL LYNCH COM 590188108 292 3500 SH
SOLE 3500
METROMEDIA INTERNATIONAL COM 591695101 475 100000 SH
SOLE 100000
MICROSOFT CORP. COM 594918104 1401 11998 SH
SOLE 11998
MINNESOTA MINING & MFG COM 604059105 251 2564 SH
SOLE 2564
MOTOROLA COM 620076109 206 1400 SH
SOLE 1400
MYLAN LABS COM 628530107 740 29389 SH
SOLE 29389
NATIONAL CITY BANK COM 635405103 997 42076 SH
SOLE 42076
NATIONAL DATA CORP. COM 635621105 2748 80985 SH
SOLE 80985
NEWELL RUBBERMAID COM 651192106 1193 41140 SH
SOLE 41140
OLD KENT COM 679833103 2840 80285 SH
SOLE 80285
OWENS & MINOR COM 690732102 125 14000 SH
SOLE 14000
P N C BANK CORP. COM 693475105 1897 42627 SH
SOLE 42627
P P & L RESOURCES COM 709051106 382 16687 SH
SOLE 16687
P P G INDUSTRIES COM 693506107 2128 34016 SH
SOLE 34016
PEPSICO COM 713448108 2999 85089 SH
SOLE 85089
PFIZER COM 717081103 531 16364 SH
SOLE 16364
PITNEY BOWES COM 724479100 531 11000 SH
SOLE 11000
PRIDE INTERNATIONAL COM 741932107 624 42700 SH
SOLE 42700
PROCTER & GAMBLE COM 742718109 2048 18697 SH
SOLE 18697
R P M INC. COM 749685103 114 11200 SH
SOLE 11200
REGIONS FINANCIAL COM 318464104 2320 92342 SH
SOLE 92342
RESPIRONICS COM 761230101 1695 212650 SH
SOLE 212650
ROCKWELL CORP. COM 774347108 1861 38873 SH
SOLE 38873
ROYAL DUTCH PETROLEUM COM 780257705 406 6700 SH
SOLE 6700
RUDDICK COM 781258108 408 26300 SH
SOLE 26300
S B C COMMUNICATIONS COM 845333103 427 8750 SH
SOLE 8750
SCHERING PLOUGH COM 806605101 5183 122313 SH
SOLE 122313
SCHLUMBERGER COM 806857108 205 3650 SH
SOLE 3650
SHARED MEDICAL COM 819486101 3826 75107 SH
SOLE 75107
SPRINT CORP. COM 852061100 808 12000 SH
SOLE 12000
ST. PAUL COS. COM 792860108 350 10400 SH
SOLE 10400
STATE STREET CORP. COM 857477103 234 3200 SH
SOLE 3200
SUN MICROSYSTEMS COM 866810104 1789 23100 SH
SOLE 23100
SYSCO COM 871829107 214 5400 SH
SOLE 5400
TEXACO COM 881694103 504 9276 SH
SOLE 9276
TORCHMARK COM 891027104 279 9600 SH
SOLE 9600
TRIBUNE CO. COM 896047107 337 6120 SH
SOLE 6120
TUSCARORA INC. COM 900902107 127 10450 SH
SOLE 10450
TYCO INTERNATIONAL COM 902124106 3956 101446 SH
SOLE 101446
U S TRUST CO. COM 912883105 3300 41150 SH
SOLE 41150
WARNER LAMBERT COM 934488107 5937 72456 SH
SOLE 72456
WATTS INDUSTRIES COM 942749102 158 10700 SH
SOLE 10700
WEIRTON STEEL COM 948774104 69 10200 SH
SOLE 10200
WILLAMETTE INDUSTRIES COM 969133107 233 5020 SH
SOLE 5020
AMERICAN GENERAL 6% CONV.PFD. PFD CV 02637g200 2033 21600 SH
SOLE 21600
BELCO OIL & GAS $1.625 CONV. P PFD CV 077410207 1256 82700 SH
SOLE 82700
CANADIAN PACIFIC RAILWAY 5.25% PFD CV 136375409 1516 36100 SH
SOLE 36100
CENTERPOINT PROPERTIES 7 1/2% PFD CV 151895307 1243 30400 SH
SOLE 30400
CNB CAPITAL TRUST 6% CONV. PFD PFD CV 12613g207 2710 78000 SH
SOLE 78000
FELCOR LODGING $1.95 CONV. PFD PFD CV 314305202 1245 80350 SH
SOLE 80350
GLENBOROUGH REALTY TRUST 7 3/4 PFD CV 37803p204 1345 96500 SH
SOLE 96500
JAMESON INNS $1.70 SERIES S CO PFD CV 470457300 1454 135300 SH
SOLE 135300
NEW PLAN EXCEL REALTY TR. $2.1 PFD CV 648053205 1467 69050 SH
SOLE 69050
OWENS-ILLINOIS $2.375 CONV. PF PFD CV 690768502 1609 51500 SH
SOLE 51500
SOVEREIGN BANCORP 7.50% CONV. PFD CV 845905306 1973 38600 SH
SOLE 38600
ALTERRA HEALTHCARE CONV 02145kab3 1416 2195000 PRN
SOLE 2195000
AMERICAN RETIREMENT CORP. CONV 028913aa9 1998 2775000 PRN
SOLE 2775000
ASSISTED LIVING CONCEPTS CONV 04543lad1 1698 2830000 PRN
SOLE 2830000
BANKATLANTIC BANCORP CONV 065908ac9 1467 2425000 PRN
SOLE 2425000
BELL ATLANTIC FINANCIAL CONV 07785gab6 863 850000 PRN
SOLE 850000
CAMDEN PROPERTY TRUST CONV 133131aa0 359 315000 PRN
SOLE 315000
CAPSTAR HOTEL CONV 140918ac7 1483 2060000 PRN
SOLE 2060000
CHARMING SHOPPES CONV 161133aa1 2220 2150000 PRN
SOLE 2150000
DIAMOND OFFSHORE CONV 25271caa0 1690 1665000 PRN
SOLE 1665000
EMCOR GROUP CONV 29084qac4 2037 2295000 PRN
SOLE 2295000
FIELDCREST CANNON CONV 316549ab0 10 25000 PRN
SOLE 25000
HEALTHCARE REALTY TRUST CONV 421946aa2 1912 2250000 PRN
SOLE 2250000
HILTON HOTELS CONV 432848a13 1454 1920000 PRN
SOLE 1920000
INTERIM SERVICES CONV 45868paa8 292 330000 PRN
SOLE 330000
KELLSTROM INDUSTRIES CONV 488035ae6 1759 2660000 PRN
SOLE 2660000
L T C PROPERTIES CONV 502175ac6 1435 1575000 PRN
SOLE 1575000
MAY & SPEH CONV 577777aa3 549 420000 PRN
SOLE 420000
MEDITRUST CONV 58501taa6 20 25000 PRN
SOLE 25000
NATIONAL DATA CONV 635621aa3 1756 1930000 PRN
SOLE 1930000
PARKER DRILLING CONV 701081ad3 1200 1765000 PRN
SOLE 1765000
PNC FINANCIAL CONV 693475aa3 134 25000 PRN
SOLE 25000
REPTRON ELECTRONICS CONV 76026waa7 1697 3085000 PRN
SOLE 3085000
ROBBINS & MYERS CONV 770196aa1 1992 2075000 PRN
SOLE 2075000
SBS BROADCASTING CONV 805906ac8 2984 1735000 PRN
SOLE 1735000
SOUTHERN MINERAL CONV 843367aa1 675 1985000 PRN
SOLE 1985000
STANDARD MOTOR PRODUCTS CONV 853666ab1 1574 1920000 PRN
SOLE 1920000
</TABLE>
