OPPENHEIMER U S GOVERNMENT TRUST
N-30D, 1997-05-09
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<PAGE>   1
[PHOTO]

OPPENHEIMER U.S. GOVERNMENT TRUST

Semiannual Report February 28, 1997

"We need
monthly
income,
and we need
to feel
comfortable
about how
our money
is invested."

[OPPENHEIMERFUNDS LOGO]
<PAGE>   2

THIS FUND IS FOR PEOPLE WHO WANT MONTHLY INCOME AND FEEL SECURE WITH A FUND
EMPHASIZING U.S. GOVERNMENT-BACKED SECURITIES.

                                     YIELD

                             STANDARDIZED YIELDS(3)

For the 30 Days Ended 2/28/97:

Class A

6.98%

Class B

6.56%

Class C

6.58%

                                BEAT THE AVERAGE

Cumulative Total Return for the 3-Year Period Ended 3/31/97:

Oppenheimer U.S. Government
Trust Class A (at net asset value)(1)


21.09%

Lipper General U.S. Government Average for 123 General U.S. Government Funds
for the 3-Year Period Ended 3/31/97(4)

16.66%


HOW YOUR FUND IS MANAGED

Oppenheimer U.S. Government Trust seeks high current income and safety of
principal by investing primarily in a portfolio of fixed income securities
issued or guaranteed by the U.S. government, its agencies and
instrumentalities.

         While an investment in the Fund is neither insured nor guaranteed, and
its share prices and dividends fluctuate in value, the fact that most of the
securities in the Fund's portfolio are government-backed means investors enjoy
superior credit safety and assurance of timely payment to the Fund of principal
and interest on those securities.

         In addition, the Fund is designed to provide higher income than more
conservative fixed income investments. 

PERFORMANCE

Cumulative total returns for the six months ended 2/28/97 were 5.23% for Class
A shares, 4.84% for Class B shares and 4.86% for Class C shares, without
deducting sales charges.(1)

         Your Fund's average annual total returns for Class A shares for the
1-, 5- and 10-year periods ended 3/31/97 were 0.45%, 5.50% and 6.83%,
respectively. For Class B shares, average annual total returns for the 1-year
period ended 3/31/97 and since inception on 7/21/95 were (0.25)% and 3.10%,
respectively. For Class C shares, average annual total returns for the 1-year
period ended 3/31/97 and since inception on 12/1/93 were 3.81% and 4.52%,
respectively.(2)

OUTLOOK

"Our outlook for the Fund is positive. We maintain that funds pursuing a yield
strategy should be well-poised to perform well in the first few months of
1997."

                                              David Rosenberg, Portfolio Manager
                                                               February 28, 1997


Total returns include change in share price and reinvestment of dividends and
capital gains distributions in a hypothetical investment for the periods shown.
IN REVIEWING PERFORMANCE AND RANKINGS, PLEASE REMEMBER THAT PAST PERFORMANCE
DOES NOT GUARANTEE FUTURE RESULTS. INVESTMENT RETURN AND PRINCIPAL VALUE OF AN
INVESTMENT IN THE FUND WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN
REDEEMED, MAY BE WORTH MORE OR LESS THAN THE ORIGINAL COST. For more complete
information, please review the prospectus carefully before you invest.

1. Based on the change in net asset value per share without deducting any sales
charges. Such performance is not annualized and would have been lower if sales
charges were taken into account.

2. Class A returns include the current maximum initial sales charge of 4.75%.
The Fund's maximum sales charge rate for Class A shares was higher during a
portion of some of the periods shown, and actual investment results would have
been less. Class B returns include the applicable contingent deferred sales
charge of 5% (1-year) and 4% (since inception). Class C returns include the 1%
contingent deferred sales charge for the 1-year result. An explanation of the
different performance calculations is in the Fund's prospectus. Class B and
Class C shares are subject to an annual 0.75% asset-based sales charge.

3. Standardized yield is based on net investment income for the 30-day period
ended 2/28/97. Falling net asset values will tend to artificially raise yields.

4. Source: Lipper Analytical Services, 3/31/97. The Lipper average is shown for
comparative purposes only. Funds included in the Lipper index may have
different investment policies and risks than the Fund. Oppenheimer U.S.
Government Trust is characterized by Lipper as a general U.S. government fund.
Lipper performance is based on total return and does not take sales charges
into account.

2  Oppenheimer U.S. Government Trust
<PAGE>   3
[PHOTO]
Bridget A. Macaskill
President
Oppenheimer
U.S. Government Trust

DEAR SHAREHOLDER,

As we enter the second quarter, we are optimistic regarding the prospects for
fixed income investors who maintain a long-term perspective. While U.S.
economic policy makers face a considerable challenge in 1997, maintaining the
delicate balance between moderate growth and low inflation, we believe current
political and economic stability creates a favorable environment for long-term
investments. In fact, the current economic trend appears to follow the pattern
that emerged in early 1996.

         The similarities between the first few months of 1996 and those of 
1997 are striking. In both cases, economic growth was slightly more robust than
expected, and many experts were concerned that an overheating economy would
generate inflation.  On March 18, as a preemptive move against inflation,
Federal Reserve Board Chairman Alan Greenspan raised short-term interest rates
by a modest amount. This was the first change in monetary policy since January
1996, and the first increase in short-term interest rates in over two years.
Today, it appears this initial interest-rate increase may not be the last, and
investors remain concerned about high stock market valuations and the potential
re-emergence of inflation.

         At OppenheimerFunds, we are optimistic regarding the long-term
expectations for fixed income markets. We maintain that economic growth will
not accelerate substantially but should continue at a modest rate. In addition,
as investors in general become more realistic about stock market returns, we
foresee fixed income investments becoming attractive relative to potentially
more volatile investments in equities.

         In the near term, select yield-oriented securities, such as
mortgage-backed and foreign securities-particularly those in emerging
markets-are well-positioned for producing higher returns and current income.
That's because mortgage-backed securities perform well in a rising
interest-rate environment, and emerging market securities tend to be less
sensitive to U.S. interest-rate and currency movements. Our long-term outlook
is that we may see an increase in the demand for U.S. fixed income products
which could drive  yields lower and make it difficult to maintain today's
income stream.  However, this increased demand could provide the fixed income
investor with  enhanced long-term fixed income investment opportunities.

         Your portfolio managers discuss the outlook for your Fund in light of
these broad issues on the following pages. Thank you for your confidence in
OppenheimerFunds, The Right Way to Invest. We look forward to helping you reach
your investment goals in the future.



/s/ BRIDGET A. MACASKILL

Bridget A. Macaskill

March 21, 1997


3  Oppenheimer U.S. Government Trust
<PAGE>   4
Q + A

[PHOTO]

Q  WHAT
AREAS ARE YOU CURRENTLY
TARGETING?

AN INTERVIEW WITH YOUR FUND'S MANAGERS.

HOW HAS THE FUND PERFORMED?

This was a relatively good period for Oppenheimer U.S. Government Trust, after
three very good years in a row. As a result of our defensive, income-oriented
strategy, Oppenheimer U.S. Government Trust finished 4th out of 173 general
U.S. government funds ranked by Lipper for the 1-year period ended 3/31/97.(1)

WHAT FACTORS MADE POSITIVE CONTRIBUTIONS TO PERFORMANCE?

The goal of this Fund is to provide competitive income with relatively low
risk. In order to meet this goal, we made a few changes to the portfolio's
composition this period. First, we trimmed our mortgage-backed securities
exposure. These holdings pay very high income and, at certain periods over the
last six months, our involvement in mortgage-backed securities represented as
much as 85% to 90% of the portfolio. Because these securities performed so well
throughout the year, we decided to take some profits. Another reason we reduced
our holdings was that as interest rates dropped slightly in November, we were
taking a somewhat cautious stance regarding prepayment risk-a situation that
always arises during periods of interest rate declines.(2)

         Second, as we decreased our mortgage-backed securities exposure, we
diversified the portfolio by adding non-agency commercial mortgage-backed
securities. Real estate risks are associated with the strength of the economy,
rather than interest rates. This characteristic adds diversification to the
portfolio, thereby reducing risk. We are optimistic about the real estate
market, particularly commercial real estate, and have seen a strong recovery
across the country over the year.

1. Source: Lipper Analytical Services, 3/31/97. The Lipper average is shown for
comparative purposes only. Oppenheimer U.S. Government Trust's Class A shares
were ranked 21 out of 75 funds in its category for the 5-year period ended
3/31/97 and 9 out of 45 funds for the 10-year period ended 3/31/97. Oppenheimer
U.S. Government Trust is characterized by Lipper as a general U.S. government
fund. Lipper performance is based on total return and does not take sales
charges into account.

2. The Fund's portfolio is subject to change. Non-agency mortgage-backed
securities are neither insured nor guaranteed by any government agency.


4  Oppenheimer U.S. Government Trust
<PAGE>   5
[PHOTO]

FACING PAGE
Top left: David Rosenberg, Portfolio Manager

Top right: Art Steinmetz, Senior VP, Fixed Income Investments Team

Bottom: Len Darling, Executive VP, Director of Fixed Income
Investments

THIS PAGE
Top: David Rosenberg with Gina Palmieri, Mortgage Analyst

Bottom: David Rosenberg with Leslie Falconio and Gina Palmieri, Members of
Fixed Income Investments Team

A  WE PLAN
TO INCREASE OUR 
EXPOSURE TO
MORTGAGE-BACKED 
SECURITIES.


         Third, we further reduced risk in the portfolio by shortening the
average maturity, a move that made the portfolio less sensitive to interest
rates as they fluctuated through-out the period. This defensive structure was
one of the primary reasons for our relatively strong performance.

DID ANY INVESTMENTS HINDER PERFORMANCE?

Looking back, we could have positioned ourselves even more defensively by
adjusting our maturities as interest rates moved throughout the year. For
example, when the economy accelerated in the first and second quarters of 1996,
we could have shortened our duration, which is a measure of the portfolio's
price sensitivity to changes in interest rates, more dramatically. And, in the
second half of the year, when the economy slowed, we should have extended it.
Additionally, we probably decreased our mortgage-backed securities exposure too
soon. These securities performed very well throughout the last quarter of 1996,
and the Fund would have benefited had we not reduced these holdings so quickly.

WHAT AREAS OF THE MARKET ARE YOU CURRENTLY TARGETING?

During the first half of 1997, we plan to slowly increase our exposure to
mortgage-backed securities to provide extra income for the Fund. We also intend
to rebuild our commercial mortgage-backed exposure. And, we plan to reduce our
Treasury exposure in order to support this conversion.

WHAT IS YOUR OUTLOOK FOR THE FUND?

Our outlook for the Fund is positive. We believe that in the current
interest-rate environment, characterized by stable to potentially slightly
rising interest rates, the most important attribute of any fund is its
concentration on seeking yield.  Therefore, we maintain that funds pursuing a
yield strategy should be well-poised to perform well in the first few months of
1997.

[PHOTO]

5  Oppenheimer U.S. Government Trust
<PAGE>   6

STATEMENT OF INVESTMENTS   February 28, 1997 (Unaudited)

<TABLE>
<CAPTION>
                                                                                                   FACE                MARKET VALUE
                                                                                                   AMOUNT              SEE NOTE 1
===================================================================================================================================
<S>                                                                                                <C>                 <C>
MORTGAGE-BACKED OBLIGATIONS--100.4%                                                                                                
- -----------------------------------------------------------------------------------------------------------------------------------
GOVERNMENT AGENCY--86.7%                                                                                                           
- -----------------------------------------------------------------------------------------------------------------------------------
FHLMC/FNMA/
SPONSORED--69.0%
       Federal Home Loan Mortgage Corp.:
       Collateralized Mtg. Obligations, Gtd. Multiclass Mtg. Participation Certificates:
       14%, 1/1/11                                                                                 $    493,642        $    584,744
       11.50%, 6/1/20                                                                                 1,179,883           1,372,721
       13%, 8/1/15                                                                                    2,051,286           2,478,851
       9.50%, 12/1/02--11/1/03                                                                          457,561             478,881
       Series 0192, Cl. H., 9%, 7/15/21                                                               1,200,192           1,221,940
       Series 1065, Cl. H, 8.50%, 10/15/19                                                              911,329             923,286
       Series 1343, Cl. LA, 8%, 8/15/22                                                               8,000,000           8,232,480
       Series 1347, Cl. I, 8%, 8/15/22                                                               10,000,000          10,287,500
       Series 1455, Cl. J, 7.50%, 12/15/22                                                            5,000,000           5,026,550
       Series 5, Cl. Z, 9%, 5/15/19                                                                   2,929,001           3,081,401
       Interest-Only Stripped Mtg.-Backed Security:
       Trust 177, Cl. B, 13.121%--15.639%, 7/1/26(1)                                                141,610,005          50,625,576
       Trust 179, 9.054%, 9/1/26(1)                                                                   8,728,695           2,815,004
       Principal-Only Stripped Mtg.-Backed Security, Trust 179, 7.033%, 9/1/26(2)                     8,728,695           6,100,540
       ----------------------------------------------------------------------------------------------------------------------------
       Federal National Mortgage Assn.:
       11%, 7/1/16                                                                                    1,457,690           1,669,055
       11.50%, 11/1/15                                                                                1,120,965           1,282,373
       12%, 4/15/19                                                                                   1,441,331           1,698,969
       7%, 8/1/25--5/1/26                                                                            22,165,342          21,631,077
       7.50%, 3/15/12(3)                                                                             35,250,000          35,679,698
       7.50%, 3/15/27(3)                                                                            101,750,000         101,527,168
       7.50%, 8/1/25                                                                                  4,487,438           4,485,643
       8.50%, 4/1/27(3)                                                                              23,500,000          24,300,410
       Collateralized Mtg. Obligations, Gtd. Real Estate Mtg.
       Investment Conduit Pass-Through Certificates:
       13%, 11/1/12                                                                                     166,927             196,503
       8%, 12/1/22                                                                                    2,767,895           2,838,560
       8.75%, 11/25/05                                                                                4,000,000           4,141,240
       Series 1991-176,Cl. PL, 7%, 12/25/21                                                          29,617,000          27,969,406
       Series 1992-34, Cl. G, 8%, 3/25/22                                                             2,520,000           2,574,331
       Series G92-42, Cl. C, 7%, 9/25/19                                                                240,777             240,175
       Gtd. Real Estate Mtg. Investment Conduit Pass-Through Certificates:
       Trust 1989-4, Cl. D, 10%, 2/25/19                                                              3,000,000           3,387,180
       Trust 1990-143, Cl. J, 8.75%, 12/25/20                                                        26,000,000          27,430,000
       Trust 1990-18, Cl. K, 9.60%, 3/25/20                                                           5,000,000           5,543,750
       Trust 1992-112, Cl. ED, 4%, 12/25/20                                                           3,000,000           2,597,790
       Trust 1995-4, Cl. PC, 8%, 5/25/25                                                              3,885,880           4,017,028
       Interest-Only Stripped Mtg.-Backed Security, Trust 177, Cl. B, 13.023%, 1/1/24(1)              6,003,487           2,012,106
                                                                                                                       ------------
                                                                                                                        368,451,936

- -----------------------------------------------------------------------------------------------------------------------------------
GNMA/GUARANTEED--17.7%
       Government National Mortgage Assn.:
       10%, 6/15/16--8/15/19                                                                          3,239,136           3,574,447
       10.50%, 1/15/98--5/15/21                                                                       7,331,401           8,202,931
       11%, 10/20/19--7/20/20                                                                         6,009,838           6,866,241
       11.50%, 1/15/98--4/15/13                                                                         120,265             135,986
       12%, 12/15/12--3/15/14                                                                            66,282              77,441
       12.50%, 1/15/14--6/15/19                                                                       1,111,463           1,308,748
       13%, 4/15/11--12/15/14                                                                           171,321             204,095
       13.50%, 4/15/11--8/15/14                                                                         202,140             243,204
       14%, 6/15/11                                                                                      41,740              50,767
</TABLE>

6      Oppenheimer U.S. Government Trust
<PAGE>   7


<TABLE>
<CAPTION>
                                                                                                   FACE                MARKET VALUE
                                                                                                   AMOUNT              SEE NOTE 1
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                                <C>                 <C>
GNMA/GUARANTEED
(CONTINUED)
       15%, 7/15/11--9/15/12                                                                       $    177,458         $   219,430
       6%, 3/20/27(3)(4)                                                                             23,500,000          23,555,078
       6.50%, 11/15/23--12/15/23                                                                      1,882,364           1,800,747
       7%, 2/15/22--10/15/23                                                                          9,786,641           9,604,778
       7.125%, 4/20/17                                                                                  367,206             376,559
       7.25%, 12/15/05                                                                                   37,782              38,210
       7.50%, 10/15/06--7/15/26                                                                      21,416,791          21,453,610
       8%, 4/15/02--5/15/25                                                                           3,483,065           3,592,927
       8.25%, 4/15/08                                                                                   137,313             143,749
       8.50%, 6/15/01--1/15/06                                                                          109,668             114,322
       9%, 9/15/08--5/15/09                                                                             475,391             510,343
       9.50%, 4/15/01--1/15/20                                                                        1,426,404           1,551,136
       Collateralized Mtg. Obligations, Gtd. Real Estate Mtg. Investment Conduit
       Pass-Through Certificates, Series 1994-5, Cl. PQ, 7.493%, 7/16/24                              6,000,000           5,956,860
       ----------------------------------------------------------------------------------------------------------------------------
       U.S. Department of Veterans Affairs, Interest-Only Gtd. Real Estate Mtg.
       Investment Conduit Pass-Through Certificates, Vendee Mtg. Trust,
       Series 1995-2B, Cl. 2-IO, 24.353%, 6/15/25(1)(5)                                             130,436,775           4,702,857
                                                                                                                       ------------
                                                                                                                         94,284,466

- -----------------------------------------------------------------------------------------------------------------------------------
PRIVATE--13.7%                                                                                                                     
- -----------------------------------------------------------------------------------------------------------------------------------
COMMERCIAL--11.2%
       Asset Securitization Corp.:
       Commercial Mtg. Pass-Through Certificates,
       Series 1996-MD6, Cl. A-5, 7.132%, 11/13/26(4)                                                  5,000,000           4,956,250
       Series 1996-D3, Cl. A5, 8.346%, 10/13/26(4)(5)                                                 3,700,000           3,789,031
       ----------------------------------------------------------------------------------------------------------------------------
       Commercial Mortgage Acceptance Corp., Interest-Only Stripped
       Mtg.-Backed Security, Series 1996-C1, Cl. X-2, 0.96%, 12/25/20(1)(5)                          24,833,200             869,162
       ----------------------------------------------------------------------------------------------------------------------------
       FDIC Trust, Gtd. Real Estate Mtg. Investment Conduit
       Pass-Through Certificates, Series 1994-C1, Cl. 2-G, 8.70%, 9/25/25(5)                          3,000,000           3,057,188
       ----------------------------------------------------------------------------------------------------------------------------
       Merrill Lynch Mortgage Investors, Inc. Mtg. Pass-Through Certificates,
       Series 1996-C1, 7.42%, 4/25/28                                                                 5,061,000           5,032,136
       ----------------------------------------------------------------------------------------------------------------------------
       Morgan Stanley Capital I, Inc.:
       Collateralized Mtg. Obligations, Cl. C, 7.95%, 8/15/27(5)                                      5,014,988           5,118,422
       Commercial Mtg. Pass-Through Certificates,
       Series 1996-C1, Cl. D-1, 7.51%, 2/15/28(4)(5)                                                  3,000,000           2,992,500
       ----------------------------------------------------------------------------------------------------------------------------
       Potomac Gurnee Financial Corp., Commercial Mtg.
       Pass-Through Certificates, Cl. D, 7.683%, 12/21/26(5)                                          2,500,000           2,480,078
       ----------------------------------------------------------------------------------------------------------------------------
       Resolution Trust Corp., Commercial Mtg. Pass-Through Certificates:
       Series 1992-C5, Cl. C, 8.85%, 5/25/22                                                          7,124,096           7,273,258
       Series 1993-C1, Cl. D, 9.45%, 5/25/24                                                          1,183,001           1,214,240
       Series 1994-C1, Cl. C, 8%, 6/25/26                                                             7,075,000           7,197,154
       Series 1995-C1, Cl. D, 6.90%, 2/25/27                                                          7,677,000           7,161,801
       ----------------------------------------------------------------------------------------------------------------------------
       Structured Asset Securities Corp., Multiclass Pass-Through Certificates:
       Series 1996-C3, Cl. C, 7.375%, 6/25/30(4)(5)                                                   5,000,000           4,964,063
       Series 1996-CFL, Cl. D, 7.034%, 2/25/28                                                        3,700,000           3,660,688
                                                                                                                       ------------
                                                                                                                         59,765,971

- -----------------------------------------------------------------------------------------------------------------------------------
MULTI-FAMILY--1.8%
       Countrywide Funding Corp., Series 1993-12, Cl. B1, 6.625%, 2/25/24                             3,000,000           2,724,375
       ----------------------------------------------------------------------------------------------------------------------------
       CS First Boston Mortgage Securities Corp., Mtg.
       Pass-Through Interest-Only Certificates:
       Series 94-M1, Cl. A-X, 0.52%, 2/15/02(1)(5)                                                   88,100,000              27,531
       Series 94-M1, Cl. B-X, 0.61%, 2/15/02(1)(5)                                                   19,300,000               6,031
       Series 94-M1, Cl. C-X, 0.66%, 2/15/02(1)(5)                                                   15,400,000               4,813
       Series 94-M1, Cl. D-X, 0.82%, 2/15/02(1)(5)                                                    2,968,000                 928
</TABLE>

7      Oppenheimer U.S. Government Trust
<PAGE>   8
STATEMENT OF INVESTMENTS   (Unaudited) (Continued)
<TABLE>
<CAPTION>
                                                                                                   FACE               MARKET VALUE
                                                                                                   AMOUNT             SEE NOTE 1
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                                <C>                 <C>
MULTI-FAMILY (CONTINUED)
       Resolution Trust Corp., Commercial Mtg. Pass-Through Certificates:
       Series 1991-M5, Cl. A, 9%, 3/25/17                                                          $  5,845,973        $  6,008,564
       Series 1992-M4, Cl. B, 7.20%, 9/25/21                                                            755,532             755,533
                                                                                                                       ------------
                                                                                                                          9,527,775

- -----------------------------------------------------------------------------------------------------------------------------------
RESIDENTIAL--0.7%
       Prudential Home Mortgage Securities Corp., Sub. Fixed Rate Mtg. Securities,
       Real Estate Mtg. Investment Conduit Pass-Through Certificates,
       Series 1995-A, Cl. B2, 8.684%, 3/28/25(4)(5)                                                   1,477,582           1,515,445
       ----------------------------------------------------------------------------------------------------------------------------
       Residential Funding Corp., Mtg. Pass-Through Certificates,
       Series 1993-S10, Cl. A9, 8.50%, 2/25/23                                                        2,025,112           2,076,368
                                                                                                                       ------------
                                                                                                                          3,591,813
                                                                                                                       ------------
       Total Mortgage-Backed Obligations (Cost $529,716,468)                                                            535,621,961

===================================================================================================================================
U.S. GOVERNMENT OBLIGATIONS--32.8%                                                                                                 
- -----------------------------------------------------------------------------------------------------------------------------------
       U.S. Treasury Bonds:
       7.50%, 11/15/24(6)                                                                            18,245,000          19,527,840
       STRIPS, Zero Coupon, 6.68%, 2/15/19(7)                                                        22,000,000           4,734,861
       STRIPS, Zero Coupon, 7.03%, 5/15/22(7)                                                        37,800,000           6,514,334
       ----------------------------------------------------------------------------------------------------------------------------
       U.S. Treasury Nts.:
       6.375%, 8/15/02                                                                                  122,000             121,886
       6.875%, 3/31/00                                                                               17,640,000          17,965,227
       7.50%, 5/15/02                                                                                10,400,000          10,897,255
       7.75%, 12/31/99--1/31/00                                                                      73,375,000          76,324,687
       8%, 5/15/01                                                                                   28,100,000          29,803,563
       9.125%, 5/15/99                                                                                3,500,000           3,713,279
       9.25%, 8/15/98                                                                                 1,350,000           1,411,171
       STRIPS, Zero Coupon, 6.70%, 8/15/16(7)                                                        15,000,000           3,867,103
                                                                                                                      -------------
       Total U.S. Government Obligations (Cost $178,645,832)                                                            174,881,206

===================================================================================================================================
REPURCHASE AGREEMENT--1.0%                                                                                                         
- -----------------------------------------------------------------------------------------------------------------------------------
       Repurchase agreement with PaineWebber, Inc., 5.37%, dated 2/28/97,
       to be repurchased at $5,302,372 on 3/3/97, collateralized by U.S. Treasury
       Nts., 5.875%, 2/28/99, with a value of $5,407,310 (Cost $5,300,000)                            5,300,000           5,300,000

- -----------------------------------------------------------------------------------------------------------------------------------
TOTAL INVESTMENTS, AT VALUE (COST $713,662,300)                                                           134.2%        715,803,167
- -----------------------------------------------------------------------------------------------------------------------------------
LIABILITIES IN EXCESS OF OTHER ASSETS                                                                     (34.2)       (182,288,821)
                                                                                                  -------------       ------------- 
NET ASSETS                                                                                                100.0%       $533,514,346
                                                                                                  =============       =============
</TABLE>

       1. Interest-Only Strips represent the right to receive the monthly
       interest payments on an underlying pool of mortgage loans. These
       securities typically decline in price as interest rates decline. Most
       other fixed income securities increase in price when interest rates
       decline. The principal amount of the underlying pool represents the
       notional amount on which current interest is calculated. The price of
       these securities is typically more sensitive to changes in prepayment
       rates than traditional mortgage-backed securities (for example, GNMA
       pass-throughs). Interest rates disclosed represent current yields based
       upon the current cost basis and estimated timing and amount of future
       cash flows.

       2. Principal-Only Strips represent the right to receive the monthly
       principal payments on an underlying pool of mortgage loans. The value of
       these securities generally increases as interest rates decline and
       prepayment rates rise. The price of these securities is typically more
       volatile than that of coupon-bearing bonds of the same maturity.
       Interest rates disclosed represent current yields based upon the current
       cost basis and estimated timing of future cash flows.

       3. When-issued security to be delivered and settled after February 28,
       1997.

       4. Represents the current interest rate for a variable rate security.

       5. Identifies issues considered to be illiquid--See Note 6 of Notes to
       Financial Statements.

       6. Securities with an aggregate market value of $3,219,357 are held in
       collateralized accounts to cover initial margin requirements on open
       futures sales contracts. See Note 5 of Notes to Financial Statements.

       7. For zero coupon bonds, the interest rate shown is the effective yield
       on the date of purchase.

       See accompanying Notes to Financial Statements.

8      Oppenheimer U.S. Government Trust
<PAGE>   9
STATEMENT OF ASSETS AND LIABILITIES   February 28, 1997 (Unaudited)

<TABLE>
===================================================================================================================================
<S>                                                                                                                    <C>
ASSETS
       Investments, at value (cost $713,662,300)--see accompanying statement                                           $715,803,167
       ----------------------------------------------------------------------------------------------------------------------------
       Cash                                                                                                                 199,400
       ----------------------------------------------------------------------------------------------------------------------------
       Receivables:
       Investments sold                                                                                                  52,103,784
       Interest and principal paydowns                                                                                    6,106,194
       Shares of beneficial interest sold                                                                                 1,265,424
       Daily variation on futures contracts--Note 5                                                                          33,047
       ----------------------------------------------------------------------------------------------------------------------------
       Other                                                                                                                 20,413
                                                                                                                       ------------
       Total assets                                                                                                     775,531,429

===================================================================================================================================
LIABILITIES
       Payables and other liabilities:
       Investments purchased on a when-issued basis--Note 1                                                             238,389,566
       Shares of beneficial interest redeemed                                                                             2,334,654
       Dividends                                                                                                            705,621
       Distribution and service plan fees                                                                                   209,158
       Trustees' fees                                                                                                       180,501
       Other                                                                                                                197,583
                                                                                                                       ------------
       Total liabilities                                                                                                242,017,083

===================================================================================================================================
NET ASSETS                                                                                                             $533,514,346
                                                                                                                       ============

===================================================================================================================================
COMPOSITION OF
NET ASSETS
       Paid-in capital                                                                                                 $552,352,656
       ----------------------------------------------------------------------------------------------------------------------------
       Overdistributed net investment income                                                                                (90,990)
       ---------------------------------------------------------------------------------------------------------------------------- 
       Accumulated net realized loss on investment transactions                                                         (21,225,343)
       ----------------------------------------------------------------------------------------------------------------------------
       Net unrealized appreciation on investments--Notes 3 and 5                                                          2,478,023
                                                                                                                       ------------
       Net assets                                                                                                      $533,514,346
                                                                                                                       ============

===================================================================================================================================
NET ASSET VALUE
PER SHARE
       Class A Shares:
       Net asset value and redemption price per share (based on net assets
       of $473,794,118 and 50,633,792 shares of beneficial interest outstanding)                                              $9.36
       Maximum offering price per share (net asset value plus sales charge
       of 4.75% of offering price)                                                                                            $9.83

       ----------------------------------------------------------------------------------------------------------------------------
       Class B Shares:
       Net asset value, redemption price and offering price per share (based on net assets
       of $40,398,266 and 4,321,607 shares of beneficial interest outstanding)                                                $9.35

       ----------------------------------------------------------------------------------------------------------------------------
       Class C Shares:
       Net asset value, redemption price and offering price per share (based on net assets
       of $19,321,962 and 2,067,392 shares of beneficial interest outstanding)                                                $9.35
</TABLE>

       See accompanying Notes to Financial Statements.


9      Oppenheimer U.S. Government Trust
<PAGE>   10
STATEMENT OF OPERATIONS   For the Six Months Ended February 28, 1997
(Unaudited)

<TABLE>
===================================================================================================================================
<S>                                                                                                                     <C>
INVESTMENT INCOME
       Interest                                                                                                         $23,118,788

- -----------------------------------------------------------------------------------------------------------------------------------
EXPENSES
       Management fees--Note 4                                                                                            1,615,490
       ----------------------------------------------------------------------------------------------------------------------------
       Distribution and service plan fees--Note 4:
       Class A                                                                                                              580,158
       Class B                                                                                                              180,999
       Class C                                                                                                               92,481
       ----------------------------------------------------------------------------------------------------------------------------
       Transfer and shareholder servicing agent fees--Note 4                                                                363,600
       ----------------------------------------------------------------------------------------------------------------------------
       Shareholder reports                                                                                                  141,201
       ----------------------------------------------------------------------------------------------------------------------------
       Custodian fees and expenses                                                                                           59,296
       ----------------------------------------------------------------------------------------------------------------------------
       Legal and auditing fees                                                                                               31,165
       ----------------------------------------------------------------------------------------------------------------------------
       Registration and filing fees:
       Class B                                                                                                                2,246
       ----------------------------------------------------------------------------------------------------------------------------
       Trustees' fees and expenses--Note 1                                                                                    6,418
       ----------------------------------------------------------------------------------------------------------------------------
       Other                                                                                                                 32,269
                                                                                                                        -----------
       Total expenses                                                                                                     3,105,323

===================================================================================================================================
NET INVESTMENT INCOME                                                                                                    20,013,465

===================================================================================================================================
REALIZED AND
UNREALIZED GAIN (LOSS)
       Net realized gain (loss) on:
       Investments                                                                                                        2,891,400
       Closing of futures contracts                                                                                      (2,057,730)
                                                                                                                       ------------ 
       Net realized gain                                                                                                    833,670
       ----------------------------------------------------------------------------------------------------------------------------
       Net change in unrealized appreciation or depreciation on investments                                               6,529,811
                                                                                                                       ------------
       Net realized and unrealized gain                                                                                   7,363,481

===================================================================================================================================
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS                                                                    $27,376,946
                                                                                                                       ============
</TABLE>
       See accompanying Notes to Financial Statements.


10     Oppenheimer U.S. Government Trust
<PAGE>   11
STATEMENTS OF CHANGES IN NET ASSETS
<TABLE>
<CAPTION>
                                                                SIX MONTHS ENDED
                                                                FEBRUARY 28, 1997    PERIOD ENDED          YEAR ENDED
                                                                (UNAUDITED)          AUGUST 31, 1996(1)    JUNE 30, 1996
========================================================================================================================
<S>                                                             <C>                  <C>                   <C>
OPERATIONS                                                      
       Net investment income                                    $  20,013,465        $   6,266,136         $  34,112,103
       -----------------------------------------------------------------------------------------------------------------
       Net realized gain (loss)                                       833,670            3,446,018            (5,345,762)
       -----------------------------------------------------------------------------------------------------------------
       Net change in unrealized appreciation or depreciation        6,529,811           (7,579,207)           (5,672,502)
                                                                -------------        -------------         ------------- 
       Net increase in net assets resulting from operations        27,376,946            2,132,947            23,093,839
                                                                
========================================================================================================================
DIVIDENDS AND DISTRIBUTIONS                                     
TO SHAREHOLDERS                                                 
       Dividends from net investment income:                    
       Class A                                                    (18,167,329)          (5,731,651)          (31,382,515)
       Class B                                                     (1,219,262)            (348,062)           (1,137,105)
       Class C                                                       (626,875)            (186,423)             (968,691)
       -----------------------------------------------------------------------------------------------------------------
       Tax return of capital distribution:                      
       Class A                                                             --                   --              (618,306)
       Class B                                                             --                   --               (37,635)
       Class C                                                             --                   --               (22,691)
                                                                
========================================================================================================================
BENEFICIAL INTEREST                                             
TRANSACTIONS                                                    
       Net increase (decrease) in net assets resulting from     
       beneficial interest transactions--Note 2:                
       Class A                                                    (36,605,778)           2,449,140           202,362,216
       Class B                                                      3,482,029            6,033,028            31,353,131
       Class C                                                        530,023              161,928             7,965,917
                                                                
========================================================================================================================
NET ASSETS                                                      
       Total increase (decrease)                                  (25,230,246)           4,510,907           230,608,160
       -----------------------------------------------------------------------------------------------------------------
       Beginning of period                                        558,744,592          554,233,685           323,625,525
                                                                -------------        -------------         -------------
       End of period [including undistributed                   
       (overdistributed) net investment income of $(90,990),    
       $(90,989) and $57,809, respectively]                      $533,514,346         $558,744,592          $554,233,685
                                                                =============        =============         =============
</TABLE>

       1. The Fund changed its fiscal year end from June 30 to August 31.

       See accompanying Notes to Financial Statements.

11     Oppenheimer U.S. Government Trust
<PAGE>   12
FINANCIAL HIGHLIGHTS

<TABLE>
<CAPTION>
                                                                     CLASS A      
                                                                     -------------------------------------------------------
                                                                     SIX MONTHS         PERIOD
                                                                     ENDED              ENDED
                                                                     FEB. 28, 1997      AUGUST 31,       YEAR ENDED JUNE 30,
                                                                     (UNAUDITED)        1996(2)          1996        1995
============================================================================================================================
<S>                                                                       <C>              <C>         <C>        <C>
PER SHARE OPERATING DATA:
Net asset value, beginning of period                                         $9.23            $9.30       $9.51      $9.20
- ----------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment income                                                          .35              .10         .67        .68
Net realized and unrealized gain (loss)                                        .13             (.07)       (.21)       .31
                                                                         ---------         --------    --------   --------
Total income (loss) from investment operations                                 .48              .03         .46        .99
- ----------------------------------------------------------------------------------------------------------------------------
Dividends and distributions to shareholders:
Dividends from net investment income                                          (.35)            (.10)       (.66)      (.68)
Dividends in excess of net investment income                                    --               --          --         --
Tax return of capital distribution                                              --               --        (.01)        --
                                                                         ---------         --------    --------   --------
Total dividends and distributions to shareholders                             (.35)            (.10)       (.67)      (.68)
- ----------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period                                               $9.36            $9.23       $9.30      $9.51
                                                                         =========         ========    ========   ========

============================================================================================================================
TOTAL RETURN, AT NET ASSET VALUE(4)                                           5.23%            0.42%       4.91%     11.22%

============================================================================================================================
RATIOS/SUPPLEMENTAL DATA:
Net assets, end of period (in thousands)                                  $473,794         $503,693    $504,966   $312,607
- ----------------------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)                                         $488,897         $508,123    $452,236   $307,306
- ----------------------------------------------------------------------------------------------------------------------------
Ratios to average net assets:
Net investment income                                                         7.49%(5)         6.64%(5)    7.07%      7.32%
Expenses                                                                      1.07%(5)         1.09%(5)    1.08%      1.09%
- ----------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate(6)                                                    23.4%             5.6%      399.7%     303.5%
</TABLE>

       1. For the period from December 1, 1993 (inception of offering) to June 
       30, 1994.

       2. The Fund changed its fiscal year end from June 30 to August 31.

       3. For the period from July 21, 1995 (inception of offering) to June 30,
       1996.

       4. Assumes a hypothetical initial investment on the business day before
       the first day of the fiscal period (or inception of offering), with all
       dividends and distributions reinvested in additional shares on the
       reinvestment date, and redemption at the net asset value calculated on
       the last business day of the fiscal period. Sales charges are not
       reflected in the total returns. Total returns are not annualized for
       periods of less than one full year.


12     Oppenheimer U.S. Government Trust
<PAGE>   13
<TABLE>
<CAPTION>
                                     CLASS B                             CLASS C      
- ---------------------------------    ---------------------------------   ----------------------------------------------------      
                                     SIX MONTHS    PERIOD      PERIOD    SIX MONTHS     PERIOD
                                     ENDED         ENDED       ENDED     ENDED          ENDED
                                     FEB. 28, 1997 AUGUST 31,  JUNE 30,  FEB. 28, 1997  AUGUST 31,  YEAR ENDED JUNE 30,
   1994        1993        1992      (UNAUDITED)   1996(2)     1996(3)   (UNAUDITED)    1996(2)     1996     1995      1994(1)
=============================================================================================================================      
 <S>        <C>         <C>        <C>           <C>          <C>        <C>          <C>          <C>       <C>       <C>
    $9.95       $9.73       $9.25    $9.22         $9.29        $9.40      $9.22        $9.29        $9.50     $9.19    $9.83
- -----------------------------------------------------------------------------------------------------------------------------      
                                                                                                                       
      .67         .68         .69      .31           .09          .56        .31          .09          .60       .61      .33
     (.74)        .22         .48      .13          (.07)        (.11)       .13         (.07)        (.21)      .30     (.64)
- ---------   ---------   ---------  -------       -------      -------    -------      -------      -------   -------   ------
     (.07)        .90        1.17      .44           .02          .45        .44          .02          .39       .91     (.31)
- -----------------------------------------------------------------------------------------------------------------------------      
                                                                                                                       
     (.64)       (.68)       (.69)    (.31)         (.09)        (.55)      (.31)        (.09)        (.59)     (.60)    (.33)
     (.01)         --          --       --            --           --         --           --           --        --       --
                                                                                                                       
     (.03)         --          --       --            --         (.01)        --           --         (.01)       --       --
- ---------   ---------   ---------  -------       -------      -------    -------      -------      -------   -------   ------
     (.68)       (.68)       (.69)    (.31)         (.09)        (.56)      (.31)        (.09)        (.60)     (.60)    (.33)
- -----------------------------------------------------------------------------------------------------------------------------      
    $9.20       $9.95       $9.73    $9.35         $9.22        $9.29      $9.35        $9.22        $9.29     $9.50    $9.19
=========   =========   =========  =======       =======      =======    =======      =======      =======   =======   ======
                                                                                                                       
=============================================================================================================================      
   (1.17)%       9.55%      13.05%    4.84%         0.28%        4.80%      4.86%        0.28%        4.11%    10.31%   (3.12)%
                                                                                                                       
=============================================================================================================================      

 $310,027    $380,916    $395,863  $40,398       $36,504      $30,737    $19,322      $18,547      $18,531   $11,019   $4,261
- -----------------------------------------------------------------------------------------------------------------------------      
 $355,698    $401,789    $376,532  $36,586       $35,078      $19,227    $18,687      $18,620      $15,766    $6,503   $2,173
- -----------------------------------------------------------------------------------------------------------------------------      
                                                                                                                       
     6.61%       6.90%       7.23%    6.72%(5)      5.82%(5)     6.44%(5)   6.75%(5)     5.90%(5)     6.27%     6.44%    5.97%(5)
     1.14%       1.17%       1.17%    1.84%(5)      1.88%(5)     1.93%(5)   1.81%(5)     1.84%(5)     1.85%     1.89%    1.96%(5)
- -----------------------------------------------------------------------------------------------------------------------------      
    139.5%       96.8%      207.8%    23.4%          5.6%       399.7%      23.4%         5.6%       399.7%    303.5%   139.5%
</TABLE>

       5. Annualized.

       6. The lesser of purchases or sales of portfolio securities for a
       period, divided by the monthly average of the market value of portfolio
       securities owned during the period. Securities with a maturity or
       expiration date at the time of acquisition of one year or less are
       excluded from the calculation. Purchases and sales of investment
       securities (excluding short-term securities) for the period ended
       February 28, 1997 were $345,474,844 and $159,201,682, respectively. For
       the years ended June 30, 1996 and 1995, purchases and sales of
       investment securities included mortgage "dollar-rolls."

       See accompanying Notes to Financial Statements.

13  Oppenheimer U.S. Government Trust
<PAGE>   14
NOTES TO FINANCIAL STATEMENTS   (Unaudited)

================================================================================
1. SIGNIFICANT
   ACCOUNTING POLICIES

       Oppenheimer U.S. Government Trust (the Fund) is registered under the
       Investment Company Act of 1940, as amended, as a diversified, open-end
       management investment company. The Fund's investment objective is to
       seek high current income, preservation of capital and maintenance of
       liquidity primarily through investments in debt instruments issued or
       guaranteed by the U.S. government or its agencies or instrumentalities.
       The Fund's investment adviser is OppenheimerFunds, Inc. (the Manager).
       The Fund offers Class A, Class B and Class C shares. Class A shares are
       sold with a front-end sales charge. Class B and C shares may be subject
       to a contingent deferred sales charge. All classes of shares have
       identical rights to earnings, assets and voting privileges, except that
       each class has its own distribution and/or service plan, expenses
       directly attributable to a particular class and exclusive voting rights
       with respect to matters affecting a single class.  The following is a
       summary of significant accounting policies consistently followed by the
       Fund.

       -------------------------------------------------------------------------
       INVESTMENT VALUATION. Portfolio securities are valued at the close of
       the New York Stock Exchange on each trading day.  Listed and unlisted
       securities for which such information is regularly reported are valued
       at the last sale price of the day or, in the absence of sales, at values
       based on the closing bid or the last sale price on the prior trading
       day. Long-term and short-term "non-money market" debt securities are
       valued by a portfolio pricing service approved by the Board of Trustees.
       Such securities which cannot be valued by the approved portfolio pricing
       service are valued using dealer-supplied valuations provided the Manager
       is satisfied that the firm rendering the quotes is reliable and that the
       quotes reflect current market value, or are valued under consistently
       applied procedures established by the Board of Trustees to determine
       fair value in good faith. Short-term "money market type" debt
       securities having a remaining maturity of 60 days or less are valued at
       cost (or last determined market value) adjusted for amortization to
       maturity of any premium or discount.  Options are valued based upon the
       last sale price on the principal exchange on which the option is traded
       or, in the absence of any transactions that day, the value is based upon
       the last sale price on the prior trading date if it is within the spread
       between the closing bid and asked prices. If the last sale price is
       outside the spread, the closing bid is used.

       -------------------------------------------------------------------------
       SECURITIES PURCHASED ON A WHEN-ISSUED BASIS. Delivery and payment for
       securities that have been purchased by the Fund on a forward commitment
       or when-issued basis can take place a month or more after the
       transaction date. During this period, such securities do not earn
       interest, are subject to market fluctuation and may increase or decrease
       in value prior to their delivery. The Fund maintains, in a segregated
       account with its custodian, assets with a market value equal to the
       amount of its purchase commitments. The purchase of securities on a
       when-issued or forward commitment basis may increase the volatility of
       the Fund's net asset value to the extent the Fund makes such purchases
       while remaining substantially fully invested. As of February 28, 1997,
       the Fund had entered into outstanding when-issued or forward commitments
       of $238,389,566.

                      In connection with its ability to purchase securities on
       a when-issued or forward commitment basis, the Fund may enter into
       mortgage "dollar-rolls" in which the Fund sells securities for delivery
       in the current month and simultaneously contracts with the same
       counterparty to repurchase similar (same type, coupon and maturity) but
       not identical securities on a specified future date. The Fund records
       each dollar-roll as a sale and a new purchase transaction.

14     Oppenheimer U.S. Government Trust
<PAGE>   15
================================================================================
1. SIGNIFICANT ACCOUNTING
   POLICIES (CONTINUED)

       Allocation of Income, Expenses, and Gains and Losses. Income, expenses
       (other than those attributable to a specific class) and gains and losses
       are allocated daily to each class of shares based upon the relative
       proportion of net assets represented by such class. Operating expenses
       directly attributable to a specific class are charged against the
       operations of that class.

       -------------------------------------------------------------------------
       FEDERAL TAXES. The Fund intends to continue to comply with provisions of
       the Internal Revenue Code applicable to regulated investment companies
       and to distribute all of its taxable income, including any net realized
       gain on investments not offset by loss carryovers, to shareholders.
       Therefore, no federal income or excise tax provision is required.

       -------------------------------------------------------------------------
       TRUSTEES' FEES AND EXPENSES. The Fund has adopted a nonfunded retirement
       plan for the Fund's independent trustees. Benefits are based on years of
       service and fees paid to each trustee during the years of service.
       During the six months ended February 28, 1997, a reduction of $32,315
       was made for the Fund's projected benefit obligations and payments of
       $9,051 were made to retired trustees, resulting in an accumulated
       liability of $172,497 at February 28, 1997.

       -------------------------------------------------------------------------
       DISTRIBUTIONS TO SHAREHOLDERS. The Fund intends to declare dividends
       separately for Class A, Class B and Class C shares from net investment
       income each day the New York Stock Exchange is open for business and pay
       such dividends monthly.  Distributions from net realized gains on
       investments, if any, will be declared at least once each year.

       -------------------------------------------------------------------------
       CLASSIFICATION OF DISTRIBUTIONS TO SHAREHOLDERS. Net investment income
       (loss) and net realized gain (loss) may differ for financial statement
       and tax purposes primarily because of paydown gains and losses. The
       character of the distributions made during the year from net investment
       income or net realized gains may differ from their ultimate
       characterization for federal income tax purposes. Also, due to timing of
       dividend distributions, the fiscal year in which amounts are distributed
       may differ from the year that the income or realized gain (loss) was
       recorded by the Fund.

       -------------------------------------------------------------------------
       OTHER. Investment transactions are accounted for on the date the
       investments are purchased or sold (trade date). Discount on securities
       purchased is amortized over the average life of the respective
       securities. Realized gains and losses on investments and unrealized
       appreciation and depreciation are determined on an identified cost
       basis, which is the same basis used for federal income tax purposes.

                      The preparation of financial statements in conformity
       with generally accepted accounting principles requires management to
       make estimates and assumptions that affect the reported amounts of
       assets and liabilities and disclosure of contingent assets and
       liabilities at the date of the financial statements and the reported
       amounts of income and expenses during the reporting period. Actual
       results could differ from those estimates.

15     Oppenheimer U.S. Government Trust
<PAGE>   16
NOTES TO FINANCIAL STATEMENTS   (Unaudited) (Continued)

================================================================================
2. SHARES OF
   BENEFICIAL INTEREST

       The Fund has authorized an unlimited number of no par value shares of
       beneficial interest of each class. Transactions in shares of beneficial
       interest were as follows:

<TABLE>
<CAPTION>
                                   SIX MONTHS ENDED FEBRUARY 28, 1997 PERIOD ENDED AUGUST 31, 1996(2) YEAR ENDED JUNE 30, 1996(1)
                                   ---------------------------------- ----------------------------    ---------------------------   
                                   SHARES         AMOUNT              SHARES        AMOUNT            SHARES         AMOUNT
- ---------------------------------------------------------------------------------------------------------------------------------
<S>                               <C>            <C>                 <C>            <C>              <C>            <C>
Class A:                                                                                                                          
Sold                               2,644,532     $ 24,872,516         1,923,780     $17,886,206       10,356,711    $ 98,293,347  
Dividends reinvested               1,532,672       14,411,680           493,845       4,572,687        2,643,981      25,030,137  
Issued in connection with the                                                                                                     
acquisition of:                                                                                                                   
Oppenheimer Mortgage Income                                                                                                       
Fund--Note 7                              --               --                --              --        8,262,838      77,918,563  
Quest for Value U.S. Government                                                                                                   
Income Fund--Note 7                       --               --                --              --       10,598,976     101,114,231  
Connecticut Mutual Government                                                                                                     
Account--Note 7                           --               --                --              --        5,008,473      46,829,224  
Redeemed                          (8,096,573)     (75,889,974)       (2,152,748)    (20,009,753)     (15,453,509)   (146,823,286) 
                                  ----------     ------------        ----------     -----------      -----------    ------------
Net increase (decrease)           (3,919,369)    $(36,605,778)          264,877     $ 2,449,140       21,417,470    $202,362,216  
                                  ==========     ============        ==========     ===========      ===========    ============
                                                                                                                                  
- -----------------------------------------------------------------------------------------------------------------   ------------  
Class B:                                                                                                                          
Sold                               1,244,498     $ 11,681,886           769,313     $ 7,144,526        2,376,966    $ 22,507,322  
Dividends reinvested                  89,217          837,898            26,786         247,712           81,288         766,568  
Issued in connection with the                                                                                                     
acquisition of:                                                                                                                   
Oppenheimer Mortgage Income                                                                                                       
Fund--Note 7                              --               --                --              --          683,099       6,434,794  
Quest for Value U.S. Government                                                                                                   
Income Fund--Note 7                       --               --                --              --          967,755       9,222,705  
Connecticut Mutual Government                                                                                                     
Account--Note 7                           --               --                --              --           10,367          96,832  
Redeemed                            (969,495)      (9,037,755)         (146,276)     (1,359,210)        (811,911)     (7,675,090) 
                                  ----------     ------------        ----------     -----------      -----------    ------------
Net increase                         364,220     $  3,482,029           649,823     $ 6,033,028        3,307,564    $ 31,353,131  
                                  ==========     ============        ==========     ===========      ===========    ============
                                                                                                                                  
- -----------------------------------------------------------------------------------------------------------------   ------------  
Class C:                                                                                                                          
Sold                                 397,874     $  3,733,240           209,265     $ 1,946,901        1,386,839    $ 13,136,459  
Dividends reinvested                  54,162          508,718            16,389         151,584           85,473         807,582  
Issued in connection with the                                                                                                     
acquisition of                                                                                                                    
Quest for Value U.S.  Government                                                                                                  
Income Fund--Note 7                       --               --                --              --          284,411       2,710,439  
Redeemed                            (395,666)      (3,711,935)         (209,156)     (1,936,557)        (921,932)     (8,688,563) 
                                  ----------     ------------        ----------     -----------      -----------    ------------
Net increase                          56,370     $    530,023            16,498     $   161,928          834,791    $  7,965,917  
                                  ==========     ============        ==========     ===========      ===========    ============
</TABLE>

       1. For the year ended June 30, 1996 for Class A and Class C shares and
       for the period from July 21, 1995 (inception of offering) to June 30,
       1996 for Class B shares.

       2. The Fund changed its fiscal year end from June 30 to August 31.

================================================================================
3. UNREALIZED GAINS AND
   LOSSES ON INVESTMENTS

       At February 28, 1997, net unrealized appreciation on investments of
       $2,140,867 was composed of gross appreciation of $9,560,758, and gross
       depreciation of $7,419,891.

16     Oppenheimer U.S. Government Trust
<PAGE>   17
================================================================================
4. MANAGEMENT FEES AND
   OTHER TRANSACTIONS
   WITH AFFILIATES

       Management fees paid to the Manager were in accordance with the
       investment advisory agreement with the Fund which provides for a fee of
       0.65% of the first $200 million of aggregate net assets, 0.60% of the
       next $100 million, 0.57% of the next $100 million, 0.55% of the next
       $400 million, and 0.50% of aggregate net assets over $800 million. The
       Manager has agreed to reimburse the Fund if aggregate expenses (with
       specified exceptions) exceed the most stringent applicable regulatory
       limit on Fund expenses.

                      For the six months ended February 28, 1997, commissions
       (sales charges paid by investors) on sales of Class A shares totaled
       $336,226, of which $115,344 was retained by OppenheimerFunds
       Distributor, Inc. (OFDI), a subsidiary of the Manager, as general
       distributor, and by an affiliated broker/dealer. Sales charges advanced
       to broker/dealers by OFDI on sales of the Fund's Class B and Class C
       shares totaled $424,330 and $27,051, of which $11,633 and $2,848,
       respectively, was paid to an affiliated broker/dealer. During the six
       months ended February 28, 1997, OFDI received contingent deferred sales
       charges of $62,210 and $1,942, respectively, upon redemption of Class B
       and Class C shares as reimbursement for sales commissions advanced by
       OFDI at the time of sale of such shares.

                      OppenheimerFunds Services (OFS), a division of the
       Manager, is the transfer and shareholder servicing agent for the Fund,
       and for other registered investment companies. OFS's total costs of
       providing such services are allocated ratably to these companies.

                      The Fund has adopted a Service Plan for Class A shares to
       reimburse OFDI for a portion of its costs incurred in connection with
       the personal service and maintenance of accounts that hold Class A
       shares. Reimbursement is made quarterly at an annual rate that may not
       exceed 0.25% of the average annual net assets of Class A shares of the
       Fund. OFDI uses the service fee to reimburse brokers, dealers, banks and
       other financial institutions quarterly for providing personal service
       and maintenance of accounts of their customers that hold Class A shares.
       During the six months ended February 28, 1997, OFDI paid $82,801 to an
       affiliated broker/dealer as reimbursement for Class A personal service
       and maintenance expenses.

                      The Fund has adopted compensation type Distribution and
       Service Plans for Class B and Class C shares to compensate OFDI for its
       services and costs in distributing Class B and Class C shares and
       servicing accounts. Under the Plans, the Fund pays OFDI an annual
       asset-based sales charge of 0.75% per year on Class B shares and Class C
       shares, as compensation for sales commissions paid from its own
       resources at the time of sale and associated financing costs. OFDI also
       receives a service fee of 0.25% per year as compensation for costs
       incurred in connection with the personal service and maintenance of
       accounts that hold shares of the Fund, including amounts paid to
       brokers, dealers, banks and other financial institutions. Both fees are
       computed on the average annual net assets of Class B and Class C shares,
       determined as of the close of each regular business day. During the six
       months ended February 28, 1997, OFDI paid $6,874 to an affiliated
       broker/dealer as compensation for Class C personal service and
       maintenance expenses and retained $158,332 and $29,509, respectively, as
       compensation for Class B and Class C sales commissions and service fee
       advances, as well as financing costs. If the Plans are terminated by the
       Fund, the Board of Trustees may allow the Fund to continue payments of
       the asset-based sales charge to OFDI for certain expenses it incurred
       before the Plans were terminated. At February 28, 1997, OFDI had
       incurred unreimbursed expenses of $1,191,373 for Class B and $223,237
       for Class C.

================================================================================
5. FUTURES CONTRACTS

       The Fund may buy and sell interest rate futures contracts in order to
       gain exposure to or protect against changes in interest rates. The Fund
       may also buy or write put or call options on these futures contracts.

                      The Fund generally sells futures contracts to hedge
       against increases in interest rates and the resulting negative effect on
       the value of fixed rate portfolio securities. The Fund may also purchase
       futures contracts to gain exposure to changes in interest rates as it
       may be more efficient or cost effective than actually buying fixed
       income securities.

                      Upon entering into a futures contract, the Fund is
       required to deposit either cash or securities in an amount (initial
       margin) equal to a certain percentage of the contract value. Subsequent
       payments (variation margin) are made or received by the Fund each day.
       The variation margin payments are equal to the daily changes in the
       contract value and are recorded as unrealized gains and losses. The Fund
       recognizes a realized gain or loss when the contract is closed or
       expires.

17     Oppenheimer U.S. Government Trust
<PAGE>   18
NOTES TO FINANCIAL STATEMENTS   (Unaudited) (Continued)

================================================================================
5. FUTURES CONTRACTS
   (CONTINUED)

       Securities held in collateralized accounts to cover initial margin
       requirements on open futures contracts are noted in the Statement of
       Investments. The Statement of Assets and Liabilities reflects a
       receivable or payable for the daily mark to market for variation margin.

                      Risks of entering into futures contracts (and related
       options) include the possibility that there may be an illiquid market
       and that a change in the value of the contract or option may not
       correlate with changes in the value of the underlying securities.

       At February 28, 1997, the Fund had outstanding futures contracts to buy
       and sell debt securities as follows:

<TABLE>
<CAPTION>
                                                                                                              UNREALIZED
                                                                      NUMBER OF           VALUATION AS OF     APPRECIATION
       CONTRACTS TO BUY                             EXPIRATION DATE   FUTURES CONTRACTS   FEBRUARY 28, 1997   (DEPRECIATION)      
       --------------------------------------------------------------------------------------------------------------------        
       <S>                                          <C>               <C>                 <C>                     <C>
       U.S. Treasury Bonds                          3/97              220                 $24,399,375             $(293,000)

       CONTRACTS TO SELL                                                                                                           
       --------------------------------------------------------------------------------------------------------------------        
       U.S. Treasury Nts.                           3/97              295                  31,283,828               617,656
       U.S. Treasury Bonds                          6/97              100                  11,043,750                12,500        
                                                                                                               ------------
       Total Unrealized Appreciation                                                                               $377,156
                                                                                                               ============
</TABLE>


================================================================================
6. ILLIQUID AND
   RESTRICTED SECURITIES

       At February 28, 1997, investments in securities included issues that are
       illiquid or restricted. Restricted securities are often purchased in
       private placement transactions, are not registered under the Securities
       Act of 1933, may have contractual restrictions on resale, and are valued
       under methods approved by the Board of Trustees as reflecting fair
       value. A security may be considered illiquid if it lacks a readily
       available market or if its valuation has not changed for a certain
       period of time. The Fund intends to invest no more than 10% of its net
       assets (determined at the time of purchase and reviewed from time to
       time) in illiquid or restricted securities. Certain restricted
       securities, eligible for resale to qualified institutional investors,
       are not subject to that limit. The aggregate value of illiquid or
       restricted securities subject to this limitation at February 28, 1997
       was $29,528,048, which represents 5.53% of the Fund's net assets.

================================================================================
7. ACQUISITION OF OPPENHEIMER
   MORTGAGE INCOME FUND,
   QUEST FOR VALUE U.S.
   GOVERNMENT INCOME FUND
   AND CONNECTICUT MUTUAL
   GOVERNMENT ACCOUNT

       On July 28, 1995, the Fund acquired all of the net assets of Oppenheimer
       Mortgage Income Fund, pursuant to an Agreement and Plan of
       Reorganization approved by the Oppenheimer Mortgage Income Fund
       shareholders on July 12, 1995. The Fund issued 8,262,838 and 683,099
       shares of Class A and Class B beneficial interest, respectively, valued
       at $77,918,563 and $6,434,794 in exchange for the net assets, resulting
       in combined Class A net assets of $385,440,401 and Class B net assets of
       $6,806,465 on July 28, 1995. The net assets acquired included net
       unrealized appreciation of $844,310. The exchange qualifies as a
       tax-free reorganization for federal income tax purposes.

                      On November 24, 1995, the Fund acquired all of the net
       assets of Quest for Value U.S. Government Income Fund, pursuant to an
       Agreement and Plan of Reorganization approved by the Quest for Value
       U.S. Government Income Fund shareholders on November 16, 1995. The Fund
       issued 10,598,976, 967,755 and 284,411 shares of Class A, Class B and
       Class C beneficial interest, respectively, valued at $101,114,231,
       $9,222,705 and $2,710,439 in exchange for the net assets, resulting in
       combined Class A net assets of $518,859,988, Class B net assets of
       $21,270,443 and Class C net assets of $16,422,311 on November 24, 1995.
       The net assets acquired included net unrealized depreciation of
       $533,506. The exchange qualifies as a tax-free reorganization for
       federal income tax purposes.

                      On April 26, 1996, the Fund acquired all of the net
       assets of Connecticut Mutual Government Account, pursuant to an
       Agreement and Plan of Reorganization approved by the Connecticut Mutual
       Government Account shareholders on April 24, 1996. The Fund issued
       5,008,473 and 10,367 shares of Class A and Class B beneficial interest,
       respectively, valued at $46,829,224 and $96,832 in exchange for the net
       assets, resulting in combined Class A net assets of $513,892,599 and
       Class B net assets of $28,393,161 on April 26, 1996. The net assets
       acquired included net unrealized depreciation of $184,154. The exchange
       qualifies as a tax-free reorganization for federal income tax purposes.

18     Oppenheimer U.S. Government Trust
<PAGE>   19
OPPENHEIMER U.S. GOVERNMENT TRUST

================================================================================
OFFICERS AND TRUSTEES
       Leon Levy, Chairman of the Board of Trustees
       Donald W. Spiro, Vice Chairman of the Board of Trustees
       Bridget A Macaskill, Trustee and President
       Robert G. Galli, Trustee
       Benjamin Lipstein, Trustee
       Elizabeth B. Moynihan, Trustee
       Kenneth A. Randall, Trustee
       Edward V. Regan, Trustee
       Russell S. Reynolds, Jr., Trustee
       Pauline Trigere, Trustee
       Clayton K. Yeutter, Trustee
       David A. Rosenberg, Vice President
       George C. Bowen, Treasurer
       Robert J. Bishop, Assistant Treasurer
       Scott T. Farrar, Assistant Treasurer
       Andrew J. Donohue, Secretary
       Robert G. Zack, Assistant Secretary

================================================================================
INVESTMENT ADVISER
       OppenheimerFunds, Inc.

================================================================================
DISTRIBUTOR
       OppenheimerFunds Distributor, Inc.

================================================================================
TRANSFER AND SHAREHOLDER SERVICING AGENT
       OppenheimerFunds Services

================================================================================
CUSTODIAN OF
PORTFOLIO SECURITIES
       Citibank, N.A.

================================================================================
INDEPENDENT AUDITORS
       KPMG Peat Marwick LLP

================================================================================
LEGAL COUNSEL
       Gordon Altman Butowsky Weitzen Shalov & Wein

       The financial statements included herein have been taken from the
       records of the Fund without examination by the independent auditors.

       This is a copy of a report to shareholders of Oppenheimer U.S.
       Government Trust. This report must be preceded or accompanied by a
       Prospectus of Oppenheimer U.S. Government Trust. For material
       information concerning the Fund, see the Prospectus.

       Shares of Oppenheimer funds are not deposits or obligations of any bank,
       are not guaranteed by any bank, are not insured by the FDIC or any other
       agency, and involve investment risks, including possible loss of the
       principal amount invested.

19     Oppenheimer U.S. Government Trust
<PAGE>   20

INFORMATION

GENERAL INFORMATION
Monday-Friday 8:30 a.m.-9 p.m. ET
Saturday 10 a.m.-2 p.m. ET

1-800-525-7048

TELEPHONE TRANSACTIONS
Monday-Friday 8:30 a.m.-8 p.m. ET

1-800-852-8457

PHONELINK
24 hours a day, automated
information and transactions

1-800-533-3310

TELECOMMUNICATIONS DEVICE
FOR THE DEAF (TDD)
Monday-Friday 8:30 a.m.-8 p.m. ET
1-800-843-4461

OPPENHEIMERFUNDS
INFORMATION HOTLINE
24 hours a day, timely and insightful
messages on the economy and
issues that affect your investments

1-800-835-3104

RS0220.001.0297       April 30, 1997


[PHOTO]

CUSTOMER SERVICE REPRESENTATIVE
OPPENHEIMERFUNDS SERVICES

"HOW MAY I HELP YOU?"

As an Oppenheimer fund shareholder, you have some special privileges. Whether
it's automatic investment plans, informative newsletters and hotlines, or ready
account access, you can benefit from services designed to make investing
simple.

        And when you need help, our Customer Service Representatives are only a
toll-free phone call away. They can provide information about your account and
handle administrative requests. You can reach them at our General Information
number.

        When you want to make a transaction, you can do it easily by calling
our toll-free Telephone Transactions number. And, by enrolling in AccountLink,
a convenient service that "links" your Oppenheimer funds accounts and your bank
checking or savings account, you can use the Telephone Transactions number to
make investments.

        For added convenience, you can get automated information with
OppenheimerFunds PhoneLink service, available 24 hours a day, 7 days a week.
PhoneLink gives you access to a variety of fund, account, and market
information. Of course, you can always speak with a Customer Service
Representative during the General Information hours shown at the left.

        You can count on us whenever you need assistance. That's why the
International Customer Service Association, an independent, nonprofit
organization made up of over 3,200 customer service management professionals
from around the country, honored the Oppenheimer funds' transfer agent,
OppenheimerFunds Services, with their Award of Excellence in 1993.

        So call us today--we're here to help.

[OPPENHEIMERFUNDS LOGO]

OppenheimerFunds Distributor, Inc.
P.O. Box 5270
Denver, CO 80217-5270


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