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Guardian Diversified Research VIP Fund

Guardian Diversified Research VIP Fund

Investment Objective

The Fund seeks capital appreciation.

Fees and Expenses of the Fund

This table shows the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. The table does not reflect charges, fees or expenses that are, or may be, imposed under your variable annuity contract or variable life insurance policy through which Fund shares are offered as an investment option. If those charges, fees or expenses were reflected, the fees and expenses would be higher. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the fee table or example below. For information about these charges, fees and expenses, please refer to the applicable contract or policy prospectus.

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses	Guardian Diversified Research VIP Fund Guardian Diversified Research VIP Fund
Management Fees	0.60%
Distribution and Service (12b-1) Fees	0.25%
Other Expenses	0.10%
Total Annual Fund Operating Expenses	0.95%
Fee Waiver and/or Expense Reimbursement	none	[1],[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.95%	[2]

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. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. This Example does not reflect charges, fees or expenses that are, or may be, imposed under your variable annuity contract or variable life insurance policy, and would be higher if it did. The Example reflects contractual fee waivers and/or expense reimbursements only for the duration of the current commitment, if applicable. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example	1 Year	3 Years	5 Years	10 Years
Guardian Diversified Research VIP Fund | Guardian Diversified Research VIP Fund | USD ($)	97	303	525	1,166

Portfolio Turnover

The 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. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Example, affect the Fund's performance. For the most recent fiscal year, the Fund's portfolio turnover rate was 44% of the average value of its portfolio.

Principal Investment Strategies

The Fund invests mainly in common stocks (growth or value stocks or both) of U.S. large-capitalization companies that Putnam Investment Management, LLC, the Fund's subadviser (the "Subadviser"), believes have favorable investment potential. The Subadviser defines large-capitalization companies as companies with market capitalizations similar to companies in the Standard & Poor's 500® Index (the "Index") at the time of purchase. Although expected to change

frequently, the market capitalization range of the Index was approximately $5.2 billion to $2.85 trillion as of March 31, 2022. In addition to common stocks, the Fund may invest in preferred stocks and convertible securities.

The Fund may purchase securities of companies with prices that reflect a value lower than that which the Subadviser places on the company or security, as applicable. The Fund may from time to time emphasize one or more sectors in selecting its investments, such as the information technology sector. The Subadviser may consider, among other factors, a company's valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments. The Subadviser may also consider other factors that it believes will likely cause the security's price to rise.

The Subadviser may also consider environmental, social, and governance ("ESG") factors as part of its fundamental analysis where the Subadviser believes such factors could materially impact the economic value or risk profile of an issuer. ESG factors considered may include, but are not limited to, climate change, an issuer's governance structure and practices, and diversity and labor practices. The evaluation of ESG risks and opportunities is based on proprietary research as well as third-party research and data.

The Subadviser typically may sell investments when it believes that they no longer offer attractive future returns compared with other investment opportunities or that they present undesirable risks or in an attempt to limit losses on investments that may decline or have declined in value.

Principal Investment Risks

The risks summarized below are the principal risks of investing in the Fund. There is no guarantee that the Fund will achieve its investment objective and it is possible to lose money by investing in the Fund.

Market Risk. The financial and securities markets are volatile and may be affected by political, regulatory, social, economic, and other global market developments and disruptions, including those arising out of geopolitical events, public health emergencies (such as the spread of infectious diseases, pandemics and epidemics), natural disasters, terrorism, and governmental or quasi-governmental actions. The market value of securities in which the Fund invests is based upon the market's perception of value and is not necessarily an objective measure of the securities' value. Such changes may be rapid and unpredictable. These events may negatively affect issuers, industries and markets worldwide and adversely affect the Fund. The price, value or liquidity of the Fund's investments may decline and will fluctuate, sometimes rapidly and unpredictably, in response to general market conditions or other factors. Different sectors of the market, issuers, and security types may react differently to such developments.

Issuer Risk. The Fund's investments may be adversely affected by a number of factors that directly relate to the issuer of securities held by the Fund, such as its earnings prospects and overall financial position. In addition, an issuer in which the Fund invests, or to which it has exposure, may perform poorly because of poor management decisions or other events, conditions, or factors, which could also negatively affect the Fund.

Active Management Risk. The Fund is actively managed by the Subadviser. There is no guarantee that the Subadviser's investment techniques, risk analysis, and judgment implemented in making investment decisions for the Fund will be accurate or will produce the desired outcome. As a result, the Fund may be adversely affected and may underperform its benchmark index or funds with similar investment objectives. The Fund may actively and frequently trade portfolio securities, which may lead to higher transaction costs that may negatively affect the Fund's performance.

Environmental, Social and Governance (ESG) Considerations Risk. To the extent the Subadviser uses ESG factors to evaluate investments, the consideration of such factors may adversely affect the Fund's performance. Not every ESG factor may be identified or evaluated for every investment. ESG characteristics are not the only factors considered and, as a result, the issuers in which the Fund invests may not be issuers with favorable ESG characteristics or high ESG ratings. The application of ESG factors may result in the Fund performing differently than other funds and strategies in its peer group that do not consider ESG factors.

Equity Securities Risk. The price or value of the Fund's investments in a company's equity securities, such as common or preferred stock, may rise or fall rapidly or unpredictably and are subject to real or perceived changes in the company's financial condition and overall market and economic conditions. Equity securities are normally more volatile than fixed-income investments. Common stocks generally represent the riskiest investment in a company and preferred stocks generally rank junior to a company's debt with respect to dividends, which the company may or may not declare.

Large-Capitalization Company Risk. Large-capitalization companies may be unable to attain the same growth rate of small- or mid-capitalization companies. In addition, large-capitalization companies may be unable to respond to competitive challenges or opportunities as quickly as smaller companies.

Sector Risk. To the extent the Fund's investments focus on one or more sectors of the economy, the Fund's performance will be particularly susceptible to conditions and developments relating to such sector(s). For example, the Fund may be more susceptible to the particular risks that may affect companies in the information technology sector, as well as other technology-related sectors (collectively, the technology sectors) than if it were invested in a wider variety of companies in unrelated sectors. In addition, the Fund will be more exposed to price movements affecting companies in such sector(s) than a more broadly invested fund.

Convertible Securities Risk. Debt securities that are convertible into preferred or common stocks are subject to the risks of both debt and equity securities. The market value of a convertible security performs like that of a regular debt security but because a portion of the convertible security's value is based on common stock into which it may be converted, a convertible security is also subject to the same types of market and issuer risks that apply to the underlying common stock.

Past Performance

The following information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for the 1 year, 5 year and since inception periods compare with those of a broad measure of market performance. The Fund's past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available at www.guardianlife.com or by calling the phone number on the back of the Prospectus. Variable annuity contract or variable life insurance policy fees, expenses and charges are not reflected in the returns shown in the bar chart and table below. If they were, returns would be less than those shown.

Annual Returns (by calendar year)

Highest Quarterly Return – 21.71% (2nd Q 2020)
Lowest Quarterly Return – -19.50% (1st Q 2020)

Average Annual Total Returns (for the periods ended December 31, 2021)

Average Annual Returns - Guardian Diversified Research VIP Fund	Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
Guardian Diversified Research VIP Fund	24.04%	17.91%	17.49%	Sep. 01, 2016
Standard & Poor's 500® Index (reflects no deduction for fees, expenses or taxes)	28.71%	18.47%	18.07%

[1] Park Avenue Institutional Advisers LLC, the Fund's investment manager (the "Manager"), has contractually agreed through April 30, 2023 to waive certain fees and/or reimburse certain expenses incurred by the Fund to the extent necessary to limit the Fund's Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement to 0.96% of the Fund's average daily net assets (excluding, if applicable, any acquired fund fees and expenses, taxes, interest, transaction costs and brokerage commissions, litigation and extraordinary expenses). The limitation may not be increased or terminated prior to this time without action by the Board of Trustees.

[2] Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement have been restated to reflect the current expense limitation arrangement.