FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Pursuant to Rule 13a-16 or 15d-16
of the Securities Exchange Act of 1934

For January 27, 2005

Commission File Number: 1-15174

Siemens Aktiengesellschaft
(Translation of registrant’s name into English)

Wittelsbacherplatz 2
D-80333 Munich
Federal Republic of Germany
(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F þ          Form 40-F o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Yes o          No þ

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Yes o          No þ

Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes o          No þ

If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-

Table of Contents

Key figures ⁽¹⁾

Note: “Group profit from Operations” is reconciled to “Income before income taxes” of Operations under “Reconciliation to financial statements” on the table “Segment information” included in this release.

		Press Presse Prensa For the business and financial press Munich, January 27, 2005

Siemens in the first quarter 2005 (October 1, 2004 to December 31, 2004)

“I am very satisfied with the first quarter of fiscal 2005. The earnings growth in Operations is in line with our expectations,” said Siemens CEO Heinrich v. Pierer. “Revenue growth is typically slow in our first fiscal quarter. Depending on exchange rate developments, we expect higher turnover growth than in the past year.”

“For fiscal 2005, we expect that the Groups known for their strong margins will continue on their successful paths. Similarly, Industrial Solutions and Services, Logistics and Assembly Systems, and Siemens Building Technologies are moving toward their respective margin targets. Furthermore, we anticipate that Transportation Systems will return to profitability for the full year. Earnings for the Information and Communications Groups are expected to be influenced by non-operating effects arising from, among other things, strategic reorientation of business activities. Nevertheless we are directing all our efforts toward increasing comparable net income* for the full fiscal year.”

1

For the first quarter of fiscal 2005, ended December 31, 2004, Siemens reported net income of €1.001 billion, up 38% compared to the same quarter of fiscal 2004. Basic and diluted earnings per share rose to €1.12 and €1.08, respectively, from €0.82 and €0.78 per share a year earlier. Group profit from Operations rose 5%, to €1.433 billion, including a gain from the sale of a portion of shares held in Juniper Networks, Inc. Strong earnings came from Automation and Drives (A&D), Medical Solutions (Med), Power Generation (PG), Siemens VDO Automotive (SV) and Osram. In the Information and Communications business area, Communications (Com) more than offset losses in its mobile phone business with the Juniper gain, and Siemens Business Services (SBS) reported a loss in a weak operating environment. Results for these two Groups confirm the need for additional measures that will enable them to achieve their margin targets.

Finance and Real Estate activities contributed €137 million in income before income taxes, and Corporate Treasury activities yielded €104 million primarily from derivatives not qualifying for hedge accounting. While income taxes for the quarter were higher than a year earlier, the effective tax rate was lower.

First-quarter orders rose 5% for Siemens worldwide, to €21.537 billion. International orders were up 7% year-over-year, compared to a 3% decline in orders in Germany. Within international orders, a decline in Europe was more than offset by growth in other regions, including a major locomotive order in China and a large power plant order in Bahrain. Sales for Siemens worldwide were €18.167 billion for the quarter, down 1% year-over-year. International sales were level with the prior year, compared to a 5% decline in Germany. Within international sales, lower revenues in Europe were more than offset by rising sales in other regions. For Siemens worldwide, the net effect of acquisitions and dispositions added four percentage points to order growth and three percentage points to sales growth, whereas currency translation effects cut two percentage points from growth in both orders and sales.

In the first quarter, Operations used €2.298 billion in net cash in operating and investing activities compared to €1.493 billion in net cash used in the same period a year earlier. The change is due primarily to increases in net working capital and cash used in acquisitions aimed at future growth. Supplemental pension plan contributions were also higher in the current period, totaling €1.496 billion compared to €1.255 billion a year earlier. Financing and

2

Real Estate and Corporate Treasury activities used net cash of €7 million compared to net cash provided of €302 million a year earlier. In aggregate, operating and investing activities for Siemens worldwide used net cash of €2.305 billion in the first quarter, compared to net cash used of €1.191 billion in the prior-year period.

Operations in the first quarter of fiscal 2005

Information and Communications

Communications (Com)

At the beginning of the first quarter of fiscal 2005, Siemens combined its Information and Communication Networks (ICN) and Information and Communication Mobile (ICM) Groups into a single Group, called Communications (Com). Prior-year results have been recast into the new structure for purposes of comparison. In the first quarter, Com had sales of €4.243 billion and orders of €4.670 billion compared to €4.567 billion and €4.779 billion, respectively, a year earlier. Group profit of €240 million at Com was due primarily to a gain of €208 million from sales of a portion of its shares in Juniper Networks, Inc. The Mobile Devices business (formerly Mobile Phones) saw sales drop to €1.170 billion from €1.486 billion year-over-year, and lost €143 million compared to a profit of €64 million a year earlier. Unit volume in the Christmas quarter was 13.5 million handsets, down from 15.2 million in the prior-year period, and average selling price also declined year-over-year, from €98 to €86.

3

Siemens Business Services (SBS)

SBS took in sharply higher orders of €1.850 billion in the first quarter, primarily due to long-term outsourcing contracts partly involving acquisitions. Sales of €1.256 billion for the quarter included a new outsourcing contract with the BBC in the U.K. The change in Group profit year-over-year was due primarily to an unfavorable revenue mix, and severance charges.

Automation & Control

Automation and Drives (A&D)

A&D led all Groups with €262 million in first-quarter Group profit. Sales increased 5% to €2.157 billion. Sales growth was broad-based among A&D’s divisions and also balanced between the Group’s domestic and international markets. First-quarter orders rose 11% to €2.433 billion, as A&D continued to augment its established business in Europe and the U.S. with fast growth in the Asia-Pacific region.

4

Industrial Solutions and Services (I&S)

I&S posted first-quarter Group profit of €20 million, up from €15 million a year earlier. Earnings in the current period benefited from the Group’s entry into the water systems market via its USFilter acquisition in the fourth quarter of fiscal 2004. The acquisition also enabled I&S to show substantial increases in first-quarter sales and orders, which rose to €1.183 billion and €1.466 billion, respectively.

Logistics and Assembly Systems (L&A)

L&A’s first-quarter orders were €592 million, below the level of the prior-year period, which included a large order in the Middle East. First-quarter sales rose 7%, to €579 million. Group profit of €38 million included significant positive effects from foreign exchange derivatives not qualifying for hedge accounting. The Group anticipates offsetting effects in coming quarters. For comparison, the prior-year quarter included €33 million in contract charges.

5

Siemens Building Technologies (SBT)

SBT posted Group profit of €49 million, up from €39 million in the first quarter a year earlier, due to a gain on the sale of an investment and improvements in the Group’s cost position. Sales and orders of €1.010 billion and €1.088 billion, respectively, were stable year-over-year on a comparable basis.

Power

Power Generation (PG)

Orders at PG were €2.485 billion, including a major order in Bahrain and the first large order for PG’s new Wind Power division following its acquisition of Bonus Energy A/S. A year earlier, first-quarter orders included an exceptionally large order in Finland. Sales of €1.578 billion in the first quarter came in lower than prior-year sales of €1.902 billion. PG’s Group profit of €214 million included €29 million in cancellation gains and a significant earnings contribution from its services business. For comparison, Group profit a year earlier was €245 million.

6

Power Transmission and Distribution (PTD)

PTD posted Group profit of €52 million in the first quarter, including a positive contribution from the Group’s acquisition of Trench Electric Holding between the periods under review. This acquisition also positively influenced sales and orders, which rose to €834 million and €1.093 billion, respectively.

Transportation

Transportation Systems (TS)

TS posted Group profit of €20 million in the first quarter compared to €32 million in the same period a year earlier. Both periods included charges in the Group’s rolling stock business, at a significantly lower level than in intervening quarters. Sales of €1.014 billion came in lower than in the first quarter a year earlier, due primarily to sharply reduced investment in rail projects in Germany. TS responded by winning significant new orders internationally, including major contracts in China, the U.K., and Vietnam. As a result, first-quarter orders rose 21% year-over-year, to €1.230 billion.

7

Siemens VDO Automotive (SV)

SV’s first-quarter sales and orders reached €2.285 billion and €2.294 billion, respectively. Growth was driven by acquisitions, primarily an automotive electronics unit in the U.S. With a larger revenue base and more favorable revenue mix, SV was able to increase Group profit to €144 million from €100 million in the same period a year earlier.

Medical

Medical Solutions (Med)

Med delivered Group profit of €215 million, up slightly year-over-year excluding portfolio transactions that added €116 million to first-quarter Group profit a year earlier. Sales were level year-over-year while orders rose 7%, to €2.030 billion, on strength in Med’s imaging systems business. Both business volume and earnings were adversely affected by currency effects.

8

Lighting

Osram

Osram increased first-quarter Group profit 10%, to €120 million, as higher capacity utilization helped raise the Group’s earnings margin nearly a full percentage point year-over-year. Osram continued to expand internationally, particularly in Asia-Pacific, increasing first-quarter revenues to €1.083 billion.

Other Operations
Other Operations consist of centrally held equity investments and other operating businesses that are not related to a Group. Equity earnings from joint ventures, particularly BSH Bosch und Siemens Hausgeräte GmbH, were the primary contributor to first-quarter earnings from Other Operations, which increased to €84 million from €41 million in the same period a year earlier.

Corporate items, pensions and eliminations
Corporate items, pensions and eliminations improved to a negative €271 million in the first quarter from a negative €357 million in the same period a year earlier. Corporate items totaled a negative €146 million compared to a negative €174 million in the prior-year period. Centrally carried pension expense also was lower year-over-year. This was due primarily to supplemental pension funding, which increased pension plan assets and expected returns, and also to lower amortization of unrecognized net losses in the current quarter compared to the prior-year period.

9

Financing and Real Estate

Siemens Financial Services (SFS)

Income before income taxes at SFS was €99 million compared to €57 million in the first quarter a year earlier, including higher earnings in the Group’s Equipment and Sales Financing division and a gain on the sale of an investment. In contrast, SFS took higher provisions against receivables in the first quarter a year earlier. Assets rose slightly compared to the end of fiscal 2004, despite negative currency translation effects.

Siemens Real Estate (SRE)

Income before income taxes at SRE was €38 million compared to €54 million in the first quarter a year earlier, due in part to lower occupancy rates.

Eliminations, reclassifications and Corporate Treasury
Income before income taxes from Eliminations, reclassifications and Corporate Treasury was €104 million compared to a negative €2 million in the same period a year earlier. The difference was due primarily to significantly higher positive effects from derivatives not qualifying for hedge accounting, related mainly to management of interest rate risk in both euros and U.S. dollars.

10

Income statement highlights for Siemens worldwide in the first quarter 2005
Siemens reported net income for the first quarter of €1.001 billion, up 38% from €726 million in the first quarter a year earlier. All three components of Siemens worldwide increased their contribution to net income, which also benefited from a lower effective tax rate compared to the prior-year period.

For Siemens worldwide, first-quarter gross profit margin increased to 30.8% from 29.8% a year earlier. A majority of the Groups in Operations improved their gross profit year-over-year, led by A&D, L&A, and I&S. These gains more than offset a volume-driven decline in gross profit at Com. Research and development expenses were nearly unchanged at 6.8% of sales. Marketing, selling and general administrative expenses rose to 19.4% of sales, compared to 18.3% in the prior-year period, mainly due to higher expenses at I&S, Com, and SBS.

Other operating income was a net €17 million in the first quarter, compared to €99 million a year earlier. The prior-year period included gains from dispositions, particularly at Med. Income from investments in other companies was a net €144 million, up from €105 million in the same period a year earlier. Income (expense) from financial assets and marketable securities was a net gain of €299 million compared to a net expense of €38 million in the prior-year period, due primarily to a gain of €208 million at Com from the sale of a portion of its shares in Juniper Networks, Inc.

Sales and order trends for the first quarter 2005
Sales for Siemens worldwide in the first quarter of fiscal 2005 were €18.167 billion, nearly level with €18.329 billion in the same period a year earlier. Orders for Siemens worldwide increased 5% to €21.537 billion compared to €20.490 billion in the prior year, primarily on the strength of international business. On a comparable basis, excluding the net effect of acquisitions and dispositions and currency translation effects, orders were up 3% and sales declined 2% year-over-year.

In Germany, sales of €4.171 billion and orders of €4.492 billion came in 5% and 3% lower, respectively, than the prior-year period. International sales remained stable, at €13.996 billion, while international orders increased 7%, to €17.045 billion. China was a key source of international growth. Sales in China were up 3% year-over-year, to €645 million,

11

and orders surged 56%, to €1.109 billion, including a major order for new locomotive engines. This in turn kept first-quarter sales for the broader Asia-Pacific region nearly level with the prior year, at €2.014 billion, while sending first-quarter Asia-Pacific orders up 30% year-over-year, to €2.893 billion. The U.S. was another strong driver of international growth. Despite significant negative currency translation effects, U.S. sales in the first quarter rose 11% to €3.402 billion, while orders climbed 23% year-over-year, to €3.729 billion. In Europe outside Germany, sales and orders were €6.246 billion and €6.845 billion, respectively, lower than in the prior year.

Liquidity for the first quarter 2005
Within Operations, operating and investing activities used net cash of €2.298 billion, compared to net cash used of €1.493 billion in the prior year. The change is primarily due to international growth, involving both higher net working capital in existing businesses and higher cash used for acquisitions, including Bonus Energy A/S. Both periods include supplemental cash contributions to Siemens pension plans, totaling €1.496 billion in the current quarter and €1.255 billion in the prior-year period.

The two other components of Siemens worldwide, which include Financing and Real Estate and Corporate Treasury activities, used net cash in operating and investing activities of €7 million in the first quarter of fiscal 2005. These components provided net cash of €302 million in the prior-year period, primarily from positive effects related to intra-company financing. In aggregate, net cash used in operating and investing activities for Siemens worldwide in the first quarter was €2.305 billion compared to net cash used of €1.191 billion a year earlier.

Funding status of pension plans
The funding status of Siemens’ principal pension plans on December 31, 2004 improved significantly compared to the end of the prior fiscal year, with an underfunding of approximately €1.0 billion compared to an underfunding of approximately €3.1 billion at September 30, 2004. The improvement in funding status is due to supplemental and regular contributions and a higher-than-expected actual return on plan assets in the first quarter. The return on plan assets during the last three months amounted to €779 million. This represents a 17.8% return on an annualized basis, compared to an expected annualized return of 6.7%.

12

Economic Value Added
Beginning in fiscal 2005, Siemens adjusted its calculation of Economic Value Added (EVA), in particular the weighted average cost of capital (WACC) for our Operations Groups, to better correspond to the current operating environment. On a consistent calculation basis, EVA for Siemens worldwide was significantly improved in the first quarter primarily due to substantially higher earnings.

Subsequent event
During the first quarter, Siemens made a tender offer to acquire a majority interest in VA Technologie AG of Austria (“VA Tech”). Following the close of the first quarter, Siemens revised the terms of its offer and made it conditional on acquiring at least 90% of VA Tech shares.

Starting today at 10 a.m. CET, we will provide a live video webcast on the internet of Chairman of the Supervisory Board Dr. Karl-Hermann Baumann’s, CEO Dr. Heinrich v. Pierer’s and CFO Heinz-Joachim Neubürger’s speeches to the Annual Shareholders’ Meeting at the Olympic Hall in Munich, Germany. You can access the webcast at www.siemens.com/press/agm. A video of the speeches will be available after the live webcast. Starting at 8:30 a.m. CET, Siemens CFO Heinz-Joachim Neubürger will hold a conference with analysts and investors. You can follow the conference live on the internet by going to www.siemens.com/analystconference.

This document contains forward-looking statements and information — that is, statements related to future, not past, events. These statements may be identified by words as “expects,” “anticipates,” “intends,” “plans,” “believes,” “seeks,” “estimates,” “will” or words of similar meaning. Such statements are based on our current expectations and certain assumptions, and are, therefore, subject to certain risks and uncertainties. A variety of factors, many of which are beyond Siemens’ control, affect its operations, performance, business strategy and results and could cause the actual results, performance or achievements of Siemens worldwide to be materially different from any future results, performance or achievements that may be expressed or implied by such forward-looking statements. For us, particular uncertainties arise, among others, from changes in general economic and business conditions, changes in currency exchange rates and interest rates, introduction of competing products or technologies by other companies, lack of acceptance of new products or services by customers targeted by Siemens worldwide, changes in business strategy and various other factors. More detailed information about certain of these factors is contained in Siemens’ filings with the SEC, which are available on the Siemens website, www.siemens.com and on the SEC’s website, www.sec.gov. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described in the relevant forward-looking statement as anticipated, believed, estimated, expected, intended, planned or projected. Siemens does not intend or assume any obligation to update or revise these forward-looking statements in light of developments which differ from those anticipated.

13

SIEMENS AG

SEGMENT INFORMATION (unaudited)
As of and for three months ended December 31, 2004 and 2003 and as of September 30, 2004
(in millions of €)

[Continued from above table, first column(s) repeated]

SIEMENS AG

CONSOLIDATED STATEMENTS OF INCOME (unaudited)
For the three months ended December 31, 2004 and 2003
(in millions of €, per share amounts in €)

SIEMENS AG

CONSOLIDATED STATEMENTS OF CASH FLOW (unaudited)
For the three months ended December 31, 2004 and 2003
(in millions of €)