Summary Prospectus by Investment Company - Form 497K

SUMMARY PROSPECTUS May 1, 2024
	T. ROWE PRICE
	Mid-Cap Growth Portfolio
QAMWEX QAAGSX	Mid-Cap Growth Portfolio Mid-Cap Growth Portfolio-II Class
	The fund is only available as an investment option for variable annuity and variable life insurance contracts. The Securities and Exchange Commission (SEC) has not approved or disapproved these securities or passed upon the adequacy of this prospectus. Any representation to the contrary is a criminal offense. Before you invest, you may want to review the fund's prospectus, which contains more information about the fund and its risks. You can find the fund's prospectus, shareholder reports, and other information about the fund online at troweprice.com/prospectus. You can also get this information at no cost by calling 1-800-638-8790, by sending an e-mail request to [email protected], or by contacting your insurance company. This Summary Prospectus incorporates by reference the fund's prospectus, dated May 1, 2024, as amended or supplemented, and Statement of Additional Information, dated May 1, 2024, as amended or supplemented.

Summary	1

Investment Objective(s)

The fund seeks to provide long-term capital appreciation by investing in mid-cap stocks with potential for above-average earnings growth.

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. There may be additional expenses that apply, as described in your insurance contract prospectus, which are not reflected in the table or example below.

Fees and Expenses of the Fund

	Portfolio	Portfolio-II Class
Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Management fees	0.64	%a	0.64	%a
Distribution and service (12b-1) fees	-		0.25
Other expenses	0.20	a	0.21	a
Total annual fund operating expenses	0.84	a	1.10
Fee waiver/expense reimbursement	-		(0.01	)b
Total annual fund operating expenses after fee waiver/expense reimbursement	0.84	b	1.09	b

aRestated to reflect current fees.

bT. Rowe Price Associates, Inc. has contractually agreed to permanently waive its fees and/or bear any expenses (excluding interest; expenses related to borrowings, taxes, and brokerage; nonrecurring, extraordinary expenses; acquired fund fees and expenses; and 12b-1 fees, if any) that would cause the fund's ratio of expenses to average daily net assets to exceed 0.84%. The agreement may only be terminated with approval by the fund's shareholders. Fees waived and expenses borne by T. Rowe Price Associates, Inc. are subject to reimbursement by the fund(or class'), provided no reimbursement will be made if it would result in the fund's (or class') expense ratio exceeding its applicable limitation at the time of the waiver/payment or reimbursement, whichever is lower. No reimbursement will be made more than three years after any waiver or payment.

Example This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund's operating expenses remain the same. The example also assumes that any current expense limitation arrangement remains in place for the period noted in the previous table; therefore, the figures have been adjusted to reflect fee waivers or expense reimbursements only in the periods for which the expense limitation arrangement is expected to continue. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

	1 Year	3 Years	5 Years	10 Years
Portfolio	$86	$268	$466	$1,037
Portfolio-II Class	111	347	601	1,329

Portfolio TurnoverThe fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when the fund's shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 28.2% of the average value of its portfolio.

Investments, Risks, and Performance

Principal Investment Strategies

The fund normally invests at least 80% of its net assets (including any borrowings for investment purposes) in a diversified portfolio of common stocks of mid-cap companies whose earnings T. Rowe Price expects to grow at a faster rate than the average company.

T. Rowe Price	2

The fund defines mid-cap companies as those whose market capitalization (number of shares outstanding multiplied by share price) falls within the range of either the S&P MidCap 400^® Index or the Russell Midcap^® Growth Index. As of December 31, 2023, the market capitalization ranges for the S&P MidCap 400^® Index and the Russell Midcap^® Growth Index were approximately $2.39 billion to $35.12 billion, and $0.98 billion to $73.32 billion, respectively. The market capitalization of the companies in the fund's portfolio and the S&P and Russell indices changes over time; the fund will not automatically sell or cease to purchase stock of a company it holds just because the company's market capitalization grows or falls outside these index ranges.

As "growth" investors, the adviser believes that when a company's earnings grow faster than both inflation and the overall economy, the market will eventually reward it with a higher stock price.

In selecting investments, the adviser generally favors companies with one or more of the following:

·proven products or services;

·a record of above-average earnings growth;

·demonstrated potential to sustain earnings growth;

·connection to an industry experiencing increasing demand; or

·stock prices that appear to undervalue their growth prospects.

The fund may, to a limited extent, invest in privately held companies and companies that only recently began to trade publicly.

At times, the fund may have a significant portion of its assets invested in the same economic sector.

Principal Risks

As with any fund, there is no guarantee that the fund will achieve its objective(s). The fund's share price fluctuates, which means you could lose money by investing in the fund. The principal risks of investing in this fund, which may be even greater in bad or uncertain market conditions, are summarized as follows:

Mid-cap stocks: Investments in securities issued by mid-cap companies are likely to be more volatile than investments in securities issued by large-cap companies. Mid-cap companies may have less seasoned management, narrower product lines, and less capital reserves and liquidity than large-cap companies, and are therefore more sensitive to economic, market, and industry changes.

Growth investing: The fund's growth approach to investing could cause it to underperform other stock funds that employ a different investment style. Growth stocks tend to be more volatile than certain other types of stocks and their prices may fluctuate more dramatically than the overall stock market. A stock with growth characteristics can have sharp price declines due to decreases in current or expected earnings and may lack dividends that can help cushion its share price in a declining market.

Stock investing: Stocks generally fluctuate in value more than bonds and may decline significantly over short time periods. There is a chance that stock prices overall will decline because stock markets tend to move in cycles, with periods of rising and falling prices. The value of stocks held by the fund may decline due to general weakness or volatility in the stock markets in which the fund invests or because of factors that affect a particular company or industry.

Market conditions: The value of the fund's investments may decrease, sometimes rapidly or unexpectedly, due to factors affecting an issuer held by the fund, particular industries, or the overall securities markets. A variety of factors can increase the volatility of the fund's holdings and markets generally, including economic, political, or regulatory developments, recessions, inflation, rapid interest rate changes, war, military conflict, acts of terrorism, natural disasters, and outbreaks of infectious illnesses or other widespread public health issues (such as the coronavirus pandemic) and related governmental and public responses (including sanctions). Certain events may cause instability across global markets, including reduced liquidity and disruptions in trading markets, while some events may affect certain geographic regions, countries, sectors, and industries more significantly than others. Government intervention in markets may impact interest rates, market volatility, and security pricing. These adverse developments may cause broad declines in market value due to short-term market movements or for significantly longer periods during more prolonged market downturns.

Sector exposure: Issuers in the same economic sector may be similarly affected by economic or market events, making the fund more vulnerable to unfavorable developments in that economic sector than funds that invest more broadly.

Private placements and IPOs: Investments in the stocks of privately held companies and in companies that only recently began to publicly trade, such as initial public offerings or IPOs, involve greater risks than investments in stocks of companies that have traded publicly on an exchange for extended time periods. There is significantly less information available about these companies' business models, quality of management, earnings growth potential, and other criteria that are normally considered when evaluating the investment prospects of a company. Private placements and other restricted securities held by the fund are typically considered to be

Summary	3

illiquid and tend to be difficult to value since there are no market prices and less overall financial information available. The adviser evaluates a variety of factors when assigning a value to these holdings, but the determination involves some degree of subjectivity and the value assigned for the fund may differ from the value assigned by other mutual funds holding the same security.

Liquidity: A particular investment or an entire market segment may become less liquid or even illiquid, sometimes abruptly, which could limit the fund's ability to purchase or sell holdings in a timely manner at a desired price. An inability to sell a portfolio holding can adversely affect the fund's overall value or prevent the fund from being able to take advantage of other investment opportunities. Liquidity risk may be magnified during periods of substantial market volatility and unexpected episodes of illiquidity may limit the fund's ability to pay redemption proceeds without selling holdings at an unfavorable time or at a suitable price. Large redemptions may also have a negative impact on the fund's overall liquidity.

Active management: The fund's overall investment program and holdings selected by the fund's investment adviser may underperform the broad markets, relevant indices, or other funds with similar objectives and investment strategies.

Cybersecurity breaches: The fund could be harmed by intentional cyberattacks and other cybersecurity breaches, including unauthorized access to the fund's assets, confidential information, or other proprietary information. In addition, a cybersecurity breach could cause one of the fund's service providers or financial intermediaries to suffer unauthorized data access, data corruption, or loss of operational functionality.

Performance

The following performance information provides some indication of the risks of investing in the fund. The fund's performance information represents only past performance and is not necessarily an indication of future results.

The following bar chart illustrates how much returns can differ from year to year by showing calendar year returns and the best and worst calendar quarter returns during those years for the fund's Portfolio Class. Returns for other share classes vary since they have different expenses.

MID-CAP GROWTH PORTFOLIO

Calendar Year Returns

		Quarter Ended	Total Return			Quarter Ended	Total Return
	Best Quarter	6/30/20	27.78%		Worst Quarter	3/31/20	-23.34%

The following table shows the average annual total returns for each class of the fund that has been in operation for at least a full calendar year, and also compares the returns with the returns of a relevant broad-based market index, as well as with the returns of one or more comparative indexes that have investment characteristics similar to those of the fund, if applicable.

T. Rowe Price	4

Average Annual Total Returns
			Periods ended
			December 31, 2023
											Inception
			1 Year			5 Years			10 Years		date
	Portfolio	19.96	%		11.63	%		10.50	%	12/31/1996
	Portfolio-II Class	19.63			11.36			10.22		04/30/2002
	Russell Midcap® Growth Index (reflects no deduction for fees, expenses, or taxes)
		25.87			13.81			10.57
	Lipper Variable Annuity Underlying Mid-Cap Growth Funds Average
			21.64			12.77			9.54

Updated performance information is available through troweprice.com.

Management

Investment Adviser T. Rowe Price Associates, Inc. (T. Rowe Price or Price Associates)

Investment Subadviser T. Rowe Price Investment Management, Inc. (Price Investment Management)

Portfolio Manager	Title	Managed Fund Since	Joined Investment Adviser
Brian W.H. Berghuis	Chair of Investment Advisory Committee	1996	1985

Purchase and Sale of Fund Shares

The fund is not sold directly to the general public but is instead offered as an underlying investment option for variable annuity or variable life insurance contracts. Although the fund does not require a minimum amount for initial or subsequent purchases from insurance companies, your insurance company may impose investment minimums for your purchases of the fund.

You may purchase, redeem, or exchange shares of the fund on any day the New York Stock Exchange is open for business. You must purchase, redeem, and exchange shares through your insurance company.

Tax Information

The fund distributes any dividends and capital gains to its shareholders, which are the insurance company separate accounts that sponsor your variable annuity or variable life insurance contract. Variable product owners seeking to understand the tax consequences of their investment, including redemptions of fund shares and the impact of dividend and capital gains distributions by the fund, should consult with the insurance company that issued their variable product or refer to their variable annuity or variable life insurance contract prospectus.

Payments to Insurance Companies, Broker-Dealers, and Other Financial Intermediaries

The fund is generally available only through variable annuity or variable life insurance contracts. The fund and/or its related companies may make payments to a sponsoring insurance company or other financial intermediary for the sale of fund shares and related services. These payments may create a conflict of interest by influencing the insurance company or other financial intermediary to recommend the fund over another investment option or by influencing an insurance company to include the fund as an underlying investment option in a variable contract. The prospectus (or other offering document) for your variable contract may contain additional information about these payments. Ask your insurance company or financial intermediary, or visit your insurance company's or financial intermediary's website, for more information.

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T. Rowe Price Associates, Inc. 100 East Pratt Street Baltimore, MD 21202	E305-045 5/1/24

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