Prudential Jennison Mid-cap Growth Fund NCSRS Certified semi-annual shareholder report (management investment company)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES


Investment Company Act file number:		811-07811

Exact name of registrant as specified in charter:		Prudential Jennison Mid-Cap Growth Fund, Inc.

Address of principal executive offices:		Gateway Center 3,
		100 Mulberry Street,
		Newark, New Jersey 07102

Name and address of agent for service:		Deborah A. Docs
		Gateway Center 3,
		100 Mulberry Street,
		Newark, New Jersey 07102

Registrant’s telephone number, including area code:		800-225-1852

Date of fiscal year end:		8/31/2015

Date of reporting period:		2/28/2015

Item 1 – Reports to Stockholders

LOGO

PRUDENTIAL INVESTMENTS»MUTUAL FUNDS

PRUDENTIAL JENNISON

MID-CAP GROWTH FUND, INC.

SEMIANNUAL REPORT ^· FEBRUARY 28, 2015

Objective

Long-term capital appreciation

This report is not authorized for distribution to prospective investors unless preceded or accompanied by a current prospectus.

The views expressed in this report and information about the Fund’s portfolio holdings are for the period covered by this report and are subject to change thereafter.

The accompanying financial statements as of February 28, 2015, were not audited and, accordingly, no auditor’s opinion is expressed on them.

Mutual funds are distributed by Prudential Investment Management Services LLP (PIMS). Jennison Associates is a registered investment adviser. Both are Prudential Financial companies. ^© 2015 Prudential Financial, Inc. and its related entities. Prudential Investments LLC, Prudential, Jennison Associates, Jennison, the Prudential logo, Bring Your Challenges, and the Rock symbol are service marks of Prudential Financial, Inc. and its related entities, registered in many jurisdictions worldwide.

April 15, 2015

Dear Shareholder:

We hope you find the semiannual report for the Prudential Jennison Mid-Cap Growth Fund, Inc., informative and useful. The report covers performance for the six-month period that ended February 28, 2015.

Since market conditions change over time, we believe it is important to maintain a diversified portfolio of funds consistent with your tolerance for risk, time horizon, and financial goals.

Your financial advisor can help you create a diversified investment plan that may include funds covering all the basic asset classes and that reflects your personal investor profile and risk tolerance. Keep in mind, however, that diversification and asset allocation strategies do not assure a profit or protect against loss in declining markets.

Prudential Investments^® is dedicated to helping you solve your toughest investment challenges—whether it’s capital growth, reliable income, or protection from market volatility and other risks. We offer the expertise of Prudential Financial’s affiliated asset managers that strive to be leaders in a broad range of funds to help you stay on course to the future you envision. They also manage money for major corporations and pension funds around the world, which means you benefit from the same expertise, innovation, and attention to risk demanded by today’s most sophisticated investors.

Thank you for choosing the Prudential Investments family of funds.

Sincerely,

LOGO

Stuart S. Parker, President

Prudential Jennison Mid-Cap Growth Fund, Inc.


Prudential Jennison Mid-Cap Growth Fund, Inc.			1

Your Fund’s Performance (Unaudited)

Performance data quoted represent past performance. Past performance does not guarantee future results. The investment return and principal value of an investment will fluctuate, so that an investor’s shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the past performance data quoted. An investor may obtain performance data as of the most recent month-end by visiting our website at www.prudentialfunds.com or by calling (800) 225-1852.


Cumulative Total Returns (Without Sales Charges) as of 2/28/15
	Six Months			One Year			Five Years			Ten Years			Since Inception
Class A		8.69	%		11.33	%		105.69	%		181.88	%		—
Class B		8.29			10.59			98.54			162.53			—
Class C		8.32			10.59			98.60			162.60			—
Class Q		8.96			11.91			N/A			N/A			72.93% (1/8/11)
Class R		8.59			11.14			103.59			N/A			173.05 (6/3/05)
Class Z		8.84			11.72			108.75			189.99			—
Russell Midcap Growth Index		7.99			13.10			127.99			159.21			—
Russell Midcap Index		6.39			13.31			126.27			157.56			—
Lipper Mid-Cap Growth Funds Average		6.67			8.21			112.20			140.78			—

Average Annual Total Returns (With Sales Charges) as of 3/31/15
				One Year			Five Years			Ten Years			Since Inception
Class A					8.23	%		13.28	%		10.67	%		—
Class B					8.76			13.65			10.51			—
Class C					12.76			13.77			10.51			—
Class Q					15.09			N/A			N/A			14.23% (1/8/11)
Class R					14.30			14.34			N/A			10.88 (6/3/05)
Class Z					14.90			14.91			11.61			—
Russell Midcap Growth Index					15.56			16.43			10.19			—
Russell Midcap Index					13.68			16.16			10.02			—
Lipper Mid-Cap Growth Funds Average					11.59			14.88			9.38			—

Source: Prudential Investments LLC and Lipper Inc.

Inception returns are provided for any share class with less than 10 years of returns.


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The returns in the tables do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or following the redemption of Fund shares. The average annual total returns take into account applicable sales charges which are described for each share class in the table below.

Class A

Class B*

Class C

Class Q

Class R

Class Z

Maximum initial sales charge

5.50% of
the public
offering
price

None

Contingent deferred sales charge (CDSC) (as a percentage of the lower of original purchase price or net asset value at redemption)

1% on sales
of $1 million
or more
made within
12 months of
purchase

5% (Yr. 1)
4% (Yr. 2)
3% (Yr. 3)
2% (Yr. 4)
1% (Yr. 5)
1% (Yr. 6)
0% (Yr. 7)

1% on sales
made within
12 months
of purchase

None

Annual distribution and service (12b-1) fees (shown as a percentage of average daily net assets)

.30%

None

.75%
(.50%
currently)

None

The Fund is generally closed to new investors. The Fund may resume sales of shares to all eligible investors at a future date if the Fund’s manager or subadviser determines it appropriate and if the Fund’s Board of Directors approves. For more information, see the Fund’s Prospectus.

*Class B shares are closed to all purchase activity and no additional Class B shares may be purchased or acquired except by exchange from Class B shares of another Fund or through dividend or capital gains reinvestment.

Benchmark Definitions

Russell Midcap Growth Index

The Russell Midcap Growth Index is an unmanaged, market-value-weighted index that measures the performance of those Russell Midcap companies with higher price-to-book ratios and higher forecasted growth values. The cumulative total returns for the Russell Midcap Growth Index measured from the month-end closest to the inception date for Class Q shares through 2/28/15 are 78.24% and 159.05% for Class R shares. The average annual total returns for the Russell Midcap Growth Index measured from the month-end closest to the inception date for Class Q shares through 3/31/15 are 14.96% and 10.20% for Class R shares.

Russell Midcap Index

The Russell Midcap Index is an unmanaged index which measures the performance of the 800 smallest companies in the Russell 1000 Index, which represent approximately 25% of the total market capitalization of the Russell 1000 Index. The cumulative total returns for the Russell Midcap Index measured from the month-end closest to the inception date for Class Q shares through 2/28/15 are 79.21% and 155.89% for Class R shares. The average annual total returns for the Russell Midcap Index measured from the month-end closest to the inception date for Class Q shares through 3/31/15 are 15.05% and 10.03% for Class R shares.


Prudential Jennison Mid-Cap Growth Fund, Inc.			3

Your Fund’s Performance (continued)

Lipper Mid-Cap Growth Funds Average

The Lipper Mid-Cap Growth Funds Average (Lipper Average) is based on the average return of all funds in the Lipper Mid-Cap Growth Funds category for the periods noted. Funds in the Lipper Average invest at least 75% of their equity assets in companies with market capitalizations (on a three-year weighted basis) less than 300% of the dollar-weighted median market capitalization of the middle 1,000 securities of the S&P SuperComposite 1500 Index. Mid-cap growth funds typically have an above-average price-to-earnings ratio, price-to-book ratio, and three-year sales-per-share growth value compared with the S&P MidCap 400 Index. The cumulative total returns for the Lipper Average measured from the month-end closest to the inception date for Class Q shares through 2/28/15 are 66.48% and 141.43% for Class R shares. The average annual total returns for the Lipper Average measured from the month-end closest to the inception date for Class Q shares through 3/31/15 is 13.19% and 9.36% for Class R shares.

Investors cannot invest directly in an index or average. The returns for the Indexes would be lower if they included the effects of sales charges, operating expenses of a mutual fund, or taxes. Returns for the Lipper Average reflect the deduction of operating expenses, but not sales charges or taxes. The Since Inception returns for the Indexes and the Lipper Average are measured from the closest month-end to the inception date for the indicated share class.


Five Largest Holdings expressed as a percentage of net assets as of 2/28/15
SBA Communications Corp. (Class A Stock), Wireless Telecommunication Services	3.0	%
Dollar Tree, Inc., Multiline Retail	2.2
Vantiv, Inc. (Class A Stock), IT Services	2.0
Ross Stores, Inc., Specialty Retail	2.0
Electronic Arts, Inc., Software	1.9

Holdings reflect only long-term investments and are subject to change.


Five Largest Industries expressed as a percentage of net assets as of 2/28/15
Software	9.5	%
Specialty Retail	8.4
Health Care Providers & Services	6.3
Pharmaceuticals	4.2
Oil, Gas & Consumable Fuels	3.9

Industry weightings reflect only long-term investments and are subject to change.


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Fees and Expenses (Unaudited)

As a shareholder of the Fund, you incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemptions, as applicable, and (2) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses, as applicable. This example is intended to help you understand your ongoing costs (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds.

The example is based on an investment of $1,000 invested on September 1, 2014, at the beginning of the period, and held through the six-month period ended February 28, 2015. The example is for illustrative purposes only; you should consult the Prospectus for information on initial and subsequent minimum investment requirements.

Actual Expenses

The first line for each share class in the table on the following page provides information about actual account values and actual expenses. You may use the information on this line, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value ÷ $1,000 = 8.6), then multiply the result by the number on the first line under the heading “Expenses Paid During the Six-Month Period” to estimate the expenses you paid on your account during this period.

Hypothetical Example for Comparison Purposes

The second line for each share class in the table on the following page provides information about hypothetical account values and hypothetical expenses based on the Fund’s actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund’s actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds.

The Fund’s transfer agent may charge additional fees to holders of certain accounts that are not included in the expenses shown in the table on the following page. These fees apply to individual retirement accounts (IRAs) and Section 403(b) accounts. As of the close of the six-month period covered by the table, IRA fees included an annual maintenance fee of $15 per account (subject to a maximum annual maintenance fee of $25 for all accounts held by the same shareholder). Section 403(b) accounts are charged an annual $25 fiduciary maintenance fee. Some of the fees may vary in amount, or may be waived, based on your total account balance or the number of


Prudential Jennison Mid-Cap Growth Fund, Inc.			5

Fees and Expenses (continued)

Prudential Investments funds, including the Fund, that you own. You should consider the additional fees that were charged to your Fund account over the six-month period when you estimate the total ongoing expenses paid over the period and the impact of these fees on your ending account value, as these additional expenses are not reflected in the information provided in the expense table. Additional fees have the effect of reducing investment returns.

Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs such as sales charges (loads). Therefore, the second line for each share class in the table is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher.


Prudential Jennison Mid-Cap Growth Fund, Inc.		Beginning Account Value September 1, 2014		Ending Account Value February 28, 2015		Annualized Expense Ratio			Expenses Paid During the Six-Month Period*

Class A	Actual	$	1,000.00	$	1,086.90		1.07	%	$	5.54
	Hypothetical	$	1,000.00	$	1,019.49		1.07	%	$	5.36

Class B	Actual	$	1,000.00	$	1,082.90		1.77	%	$	9.14
	Hypothetical	$	1,000.00	$	1,016.02		1.77	%	$	8.85

Class C	Actual	$	1,000.00	$	1,083.20		1.77	%	$	9.14
	Hypothetical	$	1,000.00	$	1,016.02		1.77	%	$	8.85

Class Q	Actual	$	1,000.00	$	1,089.60		0.59	%	$	3.06
	Hypothetical	$	1,000.00	$	1,021.87		0.59	%	$	2.96

Class R	Actual	$	1,000.00	$	1,085.90		1.27	%	$	6.57
	Hypothetical	$	1,000.00	$	1,018.50		1.27	%	$	6.36

Class Z	Actual	$	1,000.00	$	1,088.40		0.77	%	$	3.99
	Hypothetical	$	1,000.00	$	1,020.98		0.77	%	$	3.86

*Fund expenses (net of fee waivers or subsidies, if any) for each share class are equal to the annualized expense ratio for each share class (provided in the table), multiplied by the average account value over the period, multiplied by the 181 days in the six-month period ended February 28, 2015, and divided by the 365 days in the Fund’s fiscal year ending August 31, 2015 (to reflect the six-month period). Expenses presented in the table include the expenses of any underlying portfolios in which the Fund may invest.


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The Fund’s annualized expense ratios for the six-month period ended February 28, 2015, are as follows:


Class	Gross Operating Expenses			Net Operating Expenses
A		1.07	%		1.07	%
B		1.77			1.77
C		1.77			1.77
Q		0.59			0.59
R		1.52			1.27
Z		0.77			0.77

Net operating expenses shown above reflect fee waivers and/or expense reimbursements. Additional information on Fund expenses and any fee waivers and/or expense reimbursements can be found in the “Financial Highlights” tables in this report and in the Notes to the Financial Statements in this report.


Prudential Jennison Mid-Cap Growth Fund, Inc.			7

Portfolio of Investments

as of February 28, 2015 (Unaudited)


	Shares		Value (Note 1)
LONG-TERM INVESTMENTS 98.6%

COMMON STOCKS

Airlines 2.6%					��
Spirit Airlines, Inc.*		1,549,738	$	120,538,622
United Continental Holdings, Inc.*		2,235,807		145,729,900

				266,268,522

Auto Components 1.0%
Delphi Automotive PLC (United Kingdom)		1,289,566		101,669,383

Banks 0.9%
First Republic Bank		1,643,878		93,701,046

Beverages 1.1%
Constellation Brands, Inc. (Class A Stock)*		965,717		110,787,054

Biotechnology 3.0%
BioMarin Pharmaceutical, Inc.*		992,696		106,287,961
Incyte Corp.*(a)		1,357,981		116,582,669
Vertex Pharmaceuticals, Inc.*		709,121		84,690,321

				307,560,951

Capital Markets 0.5%
Artisan Partners Asset Management, Inc. (Class A Stock)		1,059,492		51,385,362

Chemicals 3.4%
Airgas, Inc.		970,361		113,745,716
Eastman Chemical Co.		1,312,534		97,731,282
FMC Corp.		2,131,922		135,185,174

				346,662,172

Commercial Services & Supplies 2.2%
Copart, Inc.*		2,045,574		76,545,379
Stericycle, Inc.*(a)		1,087,515		146,781,900

				223,327,279

Communications Equipment 1.0%
F5 Networks, Inc.*		869,816		102,738,317

Construction & Engineering 1.0%
Quanta Services, Inc.*		3,404,601		97,984,417

See Notes to Financial Statements.


Prudential Jennison Mid-Cap Growth Fund, Inc.			9

Portfolio of Investments

as of February 28, 2015 (Unaudited) continued


	Shares		Value (Note 1)
COMMON STOCKS (Continued)

Consumer Finance 0.9%
SLM Corp.		9,586,412	$	90,783,322

Electrical Equipment 1.0%
AMETEK, Inc.		1,920,582		102,059,727

Electronic Equipment, Instruments & Components 1.6%
Amphenol Corp. (Class A Stock)		2,950,630		166,592,570

Energy Equipment & Services 0.4%
Cameron International Corp.*		912,400		42,955,792

Food & Staples Retailing 1.7%
Kroger Co. (The)		1,468,672		104,496,013
Sprouts Farmers Market, Inc.*(a)		1,951,814		71,846,273

				176,342,286

Food Products 3.5%
Hain Celestial Group, Inc. (The)*(a)		2,808,054		175,587,617
J.M. Smucker Co. (The)		624,499		72,035,960
Keurig Green Mountain, Inc.		212,624		27,126,570
Mead Johnson Nutrition Co.		826,936		86,629,815

				361,379,962

Health Care Equipment & Supplies 1.4%
Align Technology, Inc.*(a)		1,495,693		85,777,993
Cooper Cos., Inc. (The)		378,479		62,059,202

				147,837,195

Health Care Providers & Services 6.3%
Catamaran Corp.*		2,899,725		144,841,264
Centene Corp.*		2,011,106		123,602,575
Envision Healthcare Holdings, Inc.*		2,630,659		96,334,732
Henry Schein, Inc.*		1,199,682		168,015,464
Universal Health Services, Inc. (Class B Stock)		1,003,534		113,750,579

				646,544,614

Hotels, Restaurants & Leisure 2.8%
Hilton Worldwide Holdings, Inc.*		3,680,016		104,034,052
Norwegian Cruise Line Holdings Ltd.*(a)		1,546,461		76,271,457
Starwood Hotels & Resorts Worldwide, Inc.		1,291,061		103,710,930

				284,016,439

See Notes to Financial Statements.


10


	Shares		Value (Note 1)
COMMON STOCKS (Continued)

Household Products 1.0%
Church & Dwight Co., Inc.		1,220,543	$	103,917,031

Independent Power & Renewable Electricity Producers 0.9%
Abengoa Yield PLC (Spain)		2,663,833		87,347,084

Industrial Conglomerates 1.9%
Roper Industries, Inc.		1,130,681		189,468,215

Insurance 0.9%
W.R. Berkley Corp.		1,907,519		95,204,273

Internet & Catalog Retail 1.1%
TripAdvisor, Inc.*		581,442		51,893,699
Vipshop Holdings Ltd. (China), ADR*(a)		1,326,007		32,420,871
Wayfair, Inc. (Class A Stock)*(a)		1,037,280		24,220,488

				108,535,058

Internet Software & Services 1.9%
LinkedIn Corp. (Class A Stock)*		456,045		121,855,224
Twitter, Inc.*		1,587,729		76,338,010

				198,193,234

IT Services 2.6%
FleetCor Technologies, Inc.*		392,721		60,255,183
Vantiv, Inc. (Class A Stock)*		5,484,278		202,863,443

				263,118,626

Life Sciences Tools & Services 0.8%
Illumina, Inc.*		441,536		86,302,627

Machinery 2.8%
Flowserve Corp.(a)		2,039,873		126,737,310
IDEX Corp.		873,935		67,520,218
Pall Corp.		900,337		90,762,973

				285,020,501

Metals & Mining 0.8%
Reliance Steel & Aluminum Co.		1,426,950		81,350,419

Multiline Retail 2.4%
Burlington Stores, Inc.*		411,330		22,857,608

See Notes to Financial Statements.


Prudential Jennison Mid-Cap Growth Fund, Inc.			11

Portfolio of Investments

as of February 28, 2015 (Unaudited) continued


	Shares		Value (Note 1)
COMMON STOCKS (Continued)

Multiline Retail (cont’d.)
Dollar Tree, Inc.*		2,782,631	$	221,720,038

				244,577,646

Oil, Gas & Consumable Fuels 3.9%
Cimarex Energy Co.		499,862		54,824,864
Concho Resources, Inc.*		1,311,935		142,895,960
Noble Energy, Inc.		2,030,023		95,877,987
Whiting Petroleum Corp.*		3,189,229		107,891,617

				401,490,428

Pharmaceuticals 4.2%
Endo International PLC*		1,444,575		123,655,620
Jazz Pharmaceuticals PLC*(a)		449,572		76,467,701
Pacira Pharmaceuticals, Inc.*(a)		574,202		65,901,164
Perrigo Co. PLC		821,900		126,958,893
Salix Pharmaceuticals Ltd.*		261,743		41,146,000

				434,129,378

Professional Services 2.9%
IHS, Inc. (Class A Stock)*		1,250,004		146,912,970
Towers Watson & Co. (Class A Stock)(a)		1,135,458		149,312,727

				296,225,697

Real Estate Investment Trusts (REITs) 3.6%
Crown Castle International Corp.		2,224,346		191,983,303
MFA Financial, Inc.		9,620,106		76,576,044
Starwood Property Trust, Inc.		3,895,272		95,044,637

				363,603,984

Real Estate Management & Development 0.9%
CBRE Group, Inc. (Class A Stock)*		2,830,732		96,980,878

Road & Rail 1.5%
Kansas City Southern		664,931		77,025,607
Old Dominion Freight Line, Inc.*		1,016,988		79,447,103

				156,472,710

Semiconductors & Semiconductor Equipment 2.6%
Analog Devices, Inc.		1,506,372		88,183,017
Applied Materials, Inc.		4,153,846		104,053,842

See Notes to Financial Statements.


12


	Shares		Value (Note 1)
COMMON STOCKS (Continued)

Semiconductors & Semiconductor Equipment (cont’d.)
Xilinx, Inc.		1,757,429	$	74,462,267

				266,699,126

Software 9.5%
Check Point Software Technologies Ltd. (Israel)*(a)		2,074,588		173,207,352
Electronic Arts, Inc.*		3,473,739		198,628,396
Intuit, Inc.		1,610,839		157,266,212
Red Hat, Inc.*		2,546,593		176,020,508
ServiceNow, Inc.*		1,490,643		113,676,435
Splunk, Inc.*(a)		1,439,461		96,803,752
Ultimate Software Group, Inc. (The)*(a)		324,527		53,431,748

				969,034,403

Specialty Retail 8.4%
GNC Holdings, Inc. (Class A Stock)		2,457,192		118,166,363
L Brands, Inc.		1,076,045		98,845,494
O’Reilly Automotive, Inc.*		611,726		127,318,532
Ross Stores, Inc.		1,914,301		202,552,189
Signet Jewelers Ltd.		925,187		110,911,418
Tiffany & Co.		586,602		51,750,028
Ulta Salon Cosmetics & Fragrance, Inc.*		1,025,325		144,324,747

				853,868,771

Technology Hardware, Storage & Peripherals 0.5%
SanDisk Corp.		581,237		46,458,273

Textiles, Apparel & Luxury Goods 3.1%
Burberry Group PLC (United Kingdom)		3,101,392		89,400,171
Kate Spade & Co.*(a)		1,925,185		66,322,623
PVH Corp.		1,033,076		110,053,586
Under Armour, Inc. (Class A Stock)*		595,342		45,847,287

				311,623,667

Trading Companies & Distributors 1.1%
WESCO International, Inc.*(a)		1,553,066		107,829,372

Wireless Telecommunication Services 3.0%
SBA Communications Corp. (Class A Stock)*		2,464,143		307,303,274

TOTAL LONG-TERM INVESTMENTS (cost $6,927,986,716)				10,075,351,085

See Notes to Financial Statements.


Prudential Jennison Mid-Cap Growth Fund, Inc.			13

Portfolio of Investments

as of February 28, 2015 (Unaudited) continued


	Shares		Value (Note 1)
SHORT-TERM INVESTMENT 7.8%

AFFILIATED MONEY MARKET MUTUAL FUND
Prudential Investment Portfolios 2 - Prudential Core Taxable Money Market Fund (cost $797,170,404; includes $598,825,961 of cash collateral for securities on loan)(Note 3)(b)(c)		797,170,404	$	797,170,404

TOTAL INVESTMENTS 106.4% (cost $7,725,157,120; Note 5)				10,872,521,489
Liabilities in excess of other assets (6.4)%				(654,284,506	)

NET ASSETS 100.0%			$	10,218,236,983

The following abbreviation is used in the portfolio descriptions:

ADR—American Depositary Receipt

*	Non-income producing security.

(a)

All or a portion of security is on loan. The aggregate market value of such securities, including those sold and pending settlement, is $580,123,041; cash collateral of $598,825,961 (included in liabilities) was received with which the Fund purchased highly liquid short-term investments. Securities on loan are subject to contractual netting arrangements.

(b)	Prudential Investments LLC, the manager of the Fund, also serves as manager of the Prudential Investment Portfolios 2 - Prudential Core Taxable Money Market Fund.

(c)	Represents security, or a portion thereof, purchased with cash collateral received for securities on loan.

Various inputs are used in determining the value of the Fund’s investments. These inputs are summarized in the three broad levels listed below.

Level 1—quoted prices generally in active markets for identical securities.

Level 2—quoted prices for similar securities, interest rates and yield curves, prepayment speeds, foreign currency exchange rates and other observable inputs.

Level 3—unobservable inputs for securities valued in accordance with Board approved fair valuation procedures.

The following is a summary of the inputs used as of February 28, 2015 in valuing such portfolio securities:


	Level 1		Level 2		Level 3
Investments in Securities
Common Stocks
Airlines	$	266,268,522	$	—	$	—
Auto Components		101,669,383		—		—
Banks		93,701,046		—		—

See Notes to Financial Statements.


14


	Level 1		Level 2		Level 3
Common Stocks (continued)
Beverages	$	110,787,054	$	—	$	—
Biotechnology		307,560,951		—		—
Capital Markets		51,385,362		—		—
Chemicals		346,662,172		—		—
Commercial Services & Supplies		223,327,279		—		—
Communications Equipment		102,738,317		—		—
Construction & Engineering		97,984,417		—		—
Consumer Finance		90,783,322		—		—
Electrical Equipment		102,059,727		—		—
Electronic Equipment, Instruments & Components		166,592,570		—		—
Energy Equipment & Services		42,955,792		—		—
Food & Staples Retailing		176,342,286		—		—
Food Products		361,379,962		—		—
Health Care Equipment & Supplies		147,837,195		—		—
Health Care Providers & Services		646,544,614		—		—
Hotels, Restaurants & Leisure		284,016,439		—		—
Household Products		103,917,031		—		—
Independent Power & Renewable Electricity Producers		87,347,084		—		—
Industrial Conglomerates		189,468,215		—		—
Insurance		95,204,273		—		—
Internet & Catalog Retail		108,535,058		—		—
Internet Software & Services		198,193,234		—		—
IT Services		263,118,626		—		—
Life Sciences Tools & Services		86,302,627		—		—
Machinery		285,020,501		—		—
Metals & Mining		81,350,419		—		—
Multiline Retail		244,577,646		—		—
Oil, Gas & Consumable Fuels		401,490,428		—		—
Pharmaceuticals		434,129,378		—		—
Professional Services		296,225,697		—		—
Real Estate Investment Trusts (REITs)		363,603,984		—		—
Real Estate Management & Development		96,980,878		—		—
Road & Rail		156,472,710		—		—
Semiconductors & Semiconductor Equipment		266,699,126		—		—
Software		969,034,403		—		—
Specialty Retail		853,868,771		—		—
Technology Hardware, Storage & Peripherals		46,458,273		—		—
Textiles, Apparel & Luxury Goods		222,223,496		89,400,171		—
Trading Companies & Distributors		107,829,372		—		—
Wireless Telecommunication Services		307,303,274		—		—
Affiliated Money Market Mutual Fund		797,170,404		—		—

Total	$	10,783,121,318	$	89,400,171	$	—

See Notes to Financial Statements.


Prudential Jennison Mid-Cap Growth Fund, Inc.			15

Portfolio of Investments

as of February 28, 2015 (Unaudited) continued

The industry classification of investments and liabilities in excess of other assets shown as a percentage of net assets as of February 28, 2015 was as follows:


Software	9.5	%
Specialty Retail	8.4
Affiliated Money Market Mutual Fund (including 5.9% of collateral for securities on loan)	7.8
Health Care Providers & Services	6.3
Pharmaceuticals	4.2
Oil, Gas & Consumable Fuels	3.9
Real Estate Investment Trusts (REITs)	3.6
Food Products	3.5
Chemicals	3.4
Textiles, Apparel & Luxury Goods	3.1
Biotechnology	3.0
Wireless Telecommunication Services	3.0
Professional Services	2.9
Machinery	2.8
Hotels, Restaurants & Leisure	2.8
Semiconductors & Semiconductor Equipment	2.6
Airlines	2.6
IT Services	2.6
Multiline Retail	2.4
Commercial Services & Supplies	2.2
Internet Software & Services	1.9
Industrial Conglomerates	1.9
Food & Staples Retailing	1.7
Electronic Equipment, Instruments & Components	1.6
Road & Rail	1.5
Health Care Equipment & Supplies	1.4
Beverages	1.1
Internet & Catalog Retail	1.1
Trading Companies & Distributors	1.1
Household Products	1.0
Communications Equipment	1.0
Electrical Equipment	1.0
Auto Components	1.0
Construction & Engineering	1.0
Real Estate Management & Development	0.9
Insurance	0.9
Banks	0.9
Consumer Finance	0.9
Independent Power & Renewable Electricity Producers	0.9
Life Sciences Tools & Services	0.8
Metals & Mining	0.8
Capital Markets	0.5
Technology Hardware, Storage & Peripherals	0.5
Energy Equipment & Services	0.4

	106.4
Liabilities in excess of other assets	(6.4	)

	100.0	%

See Notes to Financial Statements.


16

LOGO

PRUDENTIAL INVESTMENTS»MUTUAL FUNDS

FINANCIAL STATEMENTS

(UNAUDITED)

SEMIANNUAL REPORT ^· FEBRUARY 28, 2015

Prudential Jennison Mid-Cap Growth Fund, Inc.

Statement of Assets & Liabilities

as of February 28, 2015 (Unaudited)


Assets
Investments at value, including securities on loan of $580,123,041:
Unaffiliated investments (cost $6,927,986,716)	$	10,075,351,085
Affiliated investments (cost $797,170,404)		797,170,404
Receivable for Fund shares sold		11,838,509
Dividends receivable		5,999,637
Receivable for investments sold		5,309,882
Prepaid expenses		55,903

Total assets		10,895,725,420


Liabilities
Payable to broker for collateral for securities on loan		598,825,961
Payable for investments purchased		43,265,880
Payable for Fund shares reacquired		26,152,065
Management fee payable		4,300,240
Accrued expenses		3,089,493
Distribution fee payable		1,118,190
Affiliated transfer agent fee payable		472,170
Payable to custodian		263,136
Deferred trustees’ fees		1,302

Total liabilities		677,488,437


Net Assets	$	10,218,236,983


Net assets were comprised of:
Common stock, at par	$	249,252
Paid-in capital in excess of par		6,861,467,288

		6,861,716,540
Undistributed net investment income		5,876,448
Accumulated net realized gain on investment and foreign currency transactions		203,279,626
Net unrealized appreciation on investments and foreign currencies		3,147,364,369

Net assets, February 28, 2015	$	10,218,236,983

See Notes to Financial Statements.


18


Class A
Net asset value and redemption price per share ($3,460,544,581 ÷ 86,507,945 shares of common stock issued and outstanding)	$	40.00
Maximum sales charge (5.50% of offering price)		2.33

Maximum offering price to public	$	42.33


Class B
Net asset value, offering price and redemption price per share ($38,737,392 ÷ 1,140,517 shares of common stock issued and outstanding)	$	33.96


Class C
Net asset value, offering price and redemption price per share ($215,703,115 ÷ 6,349,797 shares of common stock issued and outstanding)	$	33.97


Class Q
Net asset value, offering price and redemption price per share ($778,236,524 ÷ 18,434,544 shares of common stock issued and outstanding)	$	42.22


Class R
Net asset value, offering price and redemption price per share ($370,410,276 ÷ 9,452,044 shares of common stock issued and outstanding)	$	39.19


Class Z
Net asset value, offering price and redemption price per share ($5,354,605,095 ÷ 127,366,668 shares of common stock issued and outstanding)	$	42.04

See Notes to Financial Statements.


Prudential Jennison Mid-Cap Growth Fund, Inc.			19

Statement of Operations

Six Months Ended February 28, 2015 (Unaudited)


Net Investment Income
Income
Unaffiliated dividend income (net of foreign withholding taxes of $30,875)	$	45,137,991
Affiliated income from securities lending, net		509,180
Affiliated dividend income		186,973

Total income		45,834,144


Expenses
Management fee		27,309,042
Distribution fee—Class A		5,190,664
Distribution fee—Class B		187,739
Distribution fee—Class C		1,038,543
Distribution fee—Class R		1,350,031
Transfer agent’s fees and expenses (including affiliated expense of $1,268,700)		8,030,000
Shareholders’ reports		915,000
Custodian’s fees and expenses		463,000
Trustees’ fees		114,000
Registration fees		109,000
Insurance expenses		66,000
Legal fees and expenses		42,000
Audit fee		11,000
Miscellaneous		23,499

Total expenses		44,849,518
Less: Distribution fee waiver—Class R		(450,010	)

Net expenses		44,399,508

Net investment income		1,434,636


Realized And Unrealized Gain (Loss) On Investments And Foreign Currency Transactions
Net realized gain (loss) on:
Investment transactions		517,366,211
Foreign currency transactions		(6,612	)

		517,359,599

Net change in unrealized appreciation (depreciation) on investments		311,621,376

Net gain on investment and foreign currency transactions		828,980,975

Net Increase In Net Assets Resulting From Operations	$	830,415,611

See Notes to Financial Statements.


20

Statement of Changes in Net Assets

(Unaudited)


	Six Months Ended February 28, 2015			Year Ended August 31, 2014
Increase (Decrease) in Net Assets
Operations
Net investment income	$	1,434,636		$	4,471,582
Net realized gain on investment and foreign currency transactions		517,359,599			762,818,926
Net change in unrealized appreciation (depreciation) on investments		311,621,376			879,421,194

Net increase in net assets resulting from operations		830,415,611			1,646,711,702


Distributions from net realized gains (Note 1)
Class A		(352,422,548	)		(96,544,258	)
Class B		(4,403,589	)		(1,222,033	)
Class C		(24,714,019	)		(6,572,967	)
Class Q		(68,191,558	)		(13,270,414	)
Class R		(37,774,081	)		(10,212,398	)
Class X		—			(6,197	)
Class Z		(504,774,484	)		(117,237,338	)

		(992,280,279	)		(245,065,605	)


Fund share transactions (Net of share conversions) (Note 6)
Net proceeds from shares sold		933,199,214			1,905,131,395
Net asset value of shares issued in reinvestment of dividends and distributions		871,090,368			206,711,283
Cost of shares reacquired		(1,648,178,562	)		(2,272,771,694	)

Net increase (decrease) in net assets from Fund share transactions		156,111,020			(160,929,016	)

Total increase (decrease)		(5,753,648	)		1,240,717,081

Net Assets:
Beginning of period		10,223,990,631			8,983,273,550

End of period (a)	$	10,218,236,983		$	10,223,990,631

(a) Includes undistributed net investment income of:	$	5,876,448		$	4,441,812

See Notes to Financial Statements.


Prudential Jennison Mid-Cap Growth Fund, Inc.			21

Notes to Financial Statements

(Unaudited)

Prudential Jennison Mid-Cap Growth Fund, Inc. (the “Fund”) is a diversified, open-end management investment company, registered under the Investment Company Act of 1940, as amended (“1940 Act”). The Fund’s investment objective is to achieve long-term capital appreciation.

Note 1. Accounting Policies

The Fund follows investment company accounting and reporting guidance of the Financial Accounting Standards Board (“FASB”) Accounting Standard Codification Topic 946 Financial Services—Investment Companies. The following accounting policies conform to U.S. generally accepted accounting principles. The Fund consistently follows such policies in the preparation of its financial statements.

Securities Valuation: The Fund holds securities and other assets that are fair valued at the close of each day the New York Stock Exchange (“NYSE”) is open for trading. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. The Board of Directors (the “Board”) has adopted Valuation Procedures for security valuation under which fair valuation responsibilities have been delegated to Prudential Investments LLC (“PI” or “Manager”). Under the current Valuation Procedures, the established Valuation Committee is responsible for supervising the valuation of portfolio securities and other assets. The Valuation Procedures permit the Fund to utilize independent pricing vendor services, quotations from market makers, and alternative valuation methods when market quotations are either not readily available or not deemed representative of fair value. A record of the Valuation Committee’s actions is subject to the Board’s review, approval, and ratification at its next regularly-scheduled quarterly meeting.

Various inputs determine how the Fund’s investments are valued, all of which are categorized according to the three broad levels (Level 1, 2, or 3) detailed in the table following the Portfolio of Investments.

Common and preferred stocks, exchange-traded funds, and derivative instruments such as futures or options that are traded on a national securities exchange are valued at the last sale price as of the close of trading on the applicable exchange where the security principally trades. Securities traded via NASDAQ are valued at the NASDAQ official closing price. To the extent these securities are valued at the last sale price or NASDAQ official closing price, they are classified as Level 1 in the fair value hierarchy.


22

In the event that no sale or official closing price on valuation date exists, these securities are generally valued at the mean between the last reported bid and ask prices, or at the last bid price in the absence of an ask price. These securities are classified as Level 2 in the fair value hierarchy, as the inputs are observable.

Common and preferred stocks traded on foreign securities exchanges are valued using pricing vendor services that provide model prices derived using adjustment factors based on information such as local closing price, relevant general and sector indices, currency fluctuations, depositary receipts, and futures, as applicable. Securities valued using such model prices are classified as Level 2 in the fair value hierarchy, as the adjustment factors are observable. Such securities are valued using model prices to the extent that the valuation meets the established confidence level for each security. If the confidence level is not met or the vendor does not provide a model price, securities are valued in accordance with exchange-traded common and preferred stocks discussed above.

Investments in open-end, non-exchange-traded mutual funds are valued at their net asset values as of the close of the NYSE on the date of valuation. These securities are classified as Level 1 in the fair value hierarchy since they may be purchased or sold at their net asset values on the date of valuation.

Fixed income securities traded in the over-the-counter market are generally valued at prices provided by approved independent pricing vendors. The pricing vendors provide these prices after evaluating observable inputs including, but not limited to yield curves, yield spreads, credit ratings, deal terms, tranche level attributes, default rates, cash flows, prepayment speeds, broker/dealer quotations, and reported trades. Securities valued using such vendor prices are classified as Level 2 in the fair value hierarchy.

Over-the-counter derivative instruments are generally valued using pricing vendor services, which derive the valuation based on inputs such as underlying asset prices, indices, spreads, interest rates, and exchange rates. These instruments are categorized as Level 2 in the fair value hierarchy.

Centrally cleared swaps listed or traded on a multilateral or trade facility platform, such as a registered exchange, are valued at the daily settlement price determined by the respective exchange. These securities are classified as Level 2 in the fair value hierarchy, as the daily settlement price is not public.

Securities and other assets that cannot be priced according to the methods described above are valued based on pricing methodologies approved by the Board. In the


Prudential Jennison Mid-Cap Growth Fund, Inc.			23

Notes to Financial Statements

(Unaudited) continued

event that unobservable inputs are used when determining such valuations, the securities will be classified as Level 3 in the fair value hierarchy.

When determining the fair value of securities, some of the factors influencing the valuation include: the nature of any restrictions on disposition of the securities; assessment of the general liquidity of the securities; the issuer’s financial condition and the markets in which it does business; the cost of the investment; the size of the holding and the capitalization of the issuer; the prices of any recent transactions or bids/offers for such securities or any comparable securities; any available analyst media or other reports or information deemed reliable by the investment adviser regarding the issuer or the markets or industry in which it operates. Using fair value to price securities may result in a value that is different from a security’s most recent closing price and from the price used by other mutual funds to calculate their net asset values.

Foreign Currency Translation: The books and records of the Fund are maintained in U.S. dollars. Foreign currency amounts are translated into U.S. dollars on the following basis:

(i) market value of investment securities, other assets and liabilities—at the current rates of exchange;

(ii) purchases and sales of investment securities, income and expenses—at the rates of exchange prevailing on the respective dates of such transactions.

Although the net assets of the Fund are presented at the foreign exchange rates and market values at the close of the period, the Fund does not isolate that portion of the results of operations arising as a result of changes in the foreign exchange rates from the fluctuations arising from changes in the market prices of long-term portfolio securities held at the end of the period. Similarly, the Fund does not isolate the effect of changes in foreign exchange rates from the fluctuations arising from changes in the market prices of long-term portfolio securities sold during the period. Accordingly, these realized foreign currency gains or losses are included in the reported net realized gains or losses on investment transactions.

Net realized gains or losses on foreign currency transactions represent net foreign exchange gains or losses from holdings of foreign currencies, forward currency contracts, disposition of foreign currencies, currency gains or losses realized between the trade and settlement dates on securities transactions, and the difference between


24

the amounts of dividends, interest, and foreign withholding taxes recorded on the Fund’s books and the U.S. dollar equivalent amounts actually received or paid. Net unrealized currency gains or losses from valuing foreign currency denominated assets and liabilities (other than investments) at period end exchange rates are reflected as a component of net unrealized appreciation (depreciation) on foreign currencies.

Master Netting Arrangements: The Fund is subject to various Master Agreements, or netting arrangements, with select counterparties. These are agreements which a sub-adviser may have negotiated and entered into on behalf of the Fund. A master netting arrangement between the Fund and the counterparty permits the Fund to offset amounts payable by the Fund to the same counterparty against amounts to be received; and by the receipt of collateral from the counterparty by the Fund to cover the Fund’s exposure to the counterparty. However, there is no assurance that such mitigating factors are easily enforceable. The right to set-off exists when all the conditions are met such that each of the parties owes the other determinable amounts, the reporting party has the right to set-off the amount owed with the amount owed by the other party, the reporting party intends to set-off and the right of set-off is enforceable by law. During the reporting period, there were no instances where the right of set-off existed and management has not elected to offset.

Securities Lending: The Fund may lend its portfolio securities to banks and broker-dealers. The loans are secured by collateral at least equal to the market value of the securities loaned. Collateral pledged by each borrower is invested in a highly liquid short-term money market fund and is marked to market daily, based on the previous day’s market value, such that the value of the collateral exceeds the value of the loaned securities. Loans are subject to termination at the option of the borrower or the Fund. Upon termination of the loan, the borrower will return to the Fund securities identical to the loaned securities. Should the borrower of the securities fail financially, the Fund has the right to repurchase the securities in the open market using the collateral. The Fund recognizes income, net of any rebate and securities lending agent fees, for lending its securities, and any interest on the investment of cash received as collateral. The Fund also continues to receive interest and dividends or amounts equivalent thereto, on the securities loaned and recognizes any unrealized gain or loss in the market price of the securities loaned that may occur during the term of the loan.

REITs: The Fund invests in real estate investment trusts (“REITs”), which report information on the source of their distributions annually. Based on current and historical information, a portion of distributions received from REITs during the period is estimated to be dividend income, capital gain or return of capital and recorded accordingly. These estimates are adjusted periodically when the actual source of distributions is disclosed by the REITs.


Prudential Jennison Mid-Cap Growth Fund, Inc.			25

Notes to Financial Statements

(Unaudited) continued

Securities Transactions and Net Investment Income: Securities transactions are recorded on the trade date. Realized gains or losses from investment and currency transactions are calculated on the identified cost basis. Dividend income is recorded on the ex-dividend date. Interest income, including amortization of premium and accretion of discount on debt securities, as required, is recorded on the accrual basis. Expenses are recorded on the accrual basis, which may require the use of certain estimates by management that may differ from actual.

Net investment income or loss (other than distribution fees which are charged directly to the respective class and transfer agency fees specific to Class Q shares which are charged to that share class) and unrealized and realized gains or losses are allocated daily to each class of shares based upon the relative proportion of adjusted net assets of each class at the beginning of the day.

Dividends and Distributions: The Fund expects to pay dividends from net investment income and distributions from net realized capital gains, if any, annually. Dividends and distributions to shareholders, which are determined in accordance with federal income tax regulations and which may differ from generally accepted accounting principles, are recorded on the ex-dividend date. Permanent book/tax differences relating to income and gains are reclassified amongst undistributed net investment income, accumulated net realized gain or loss and paid-in capital in excess of par, as appropriate.

Taxes: It is the Fund’s policy to continue to meet the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable net investment income and capital gains, if any, to its shareholders. Therefore, no federal income tax provision is required.

Estimates: The preparation of financial statements requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates.

Note 2. Agreements

The Fund has a management agreement with PI. Pursuant to this agreement, PI has responsibility for all investment advisory services and supervises the subadvisor’s performance of such services. PI has entered into a subadvisory agreement with


26

Jennison Associates LLC (“Jennison”). The subadvisory agreement provides that Jennison furnishes investment advisory services in connection with the management of the Fund. In connection therewith, Jennison is obligated to keep certain books and records of the Fund. PI pays for the services of Jennison, the cost of compensation of officers, occupancy and certain clerical and bookkeeping costs of the Fund. The Fund bears all other costs and expenses.

The management fee paid to PI is accrued daily and payable monthly, at an annual rate of .60% of the Fund’s average daily net assets up to $1 billion and .55% of the average daily net assets in excess of $1 billion. The effective management fee rate was .56% for the six months ended February 28, 2015.

The Fund has a distribution agreement with Prudential Investment Management Services LLC (“PIMS”), which acts as the distributor of the Fund’s Class A, Class B, Class C, Class Q, Class R and Class Z shares. Formerly through April 11, 2014, the Fund had a distribution agreement with Prudential Annuities Distributors, Inc. (“PAD”), which, together with PIMS, served as co-distributor of the Class X shares of the Fund. The Fund compensates PIMS for distributing and servicing the Fund’s Class A, Class B, Class C, and Class R shares, pursuant to plans of distribution (the “Class A, B, C and R Plans”), regardless of expenses actually incurred by PIMS. The distribution fees are accrued daily and payable monthly. No distribution or service fees are paid to PIMS as distributor of the Class Q or Class Z shares of the Fund.

Pursuant to the Class A, B, C and R Plans, the Fund compensates PIMS for distribution-related activities at an annual rate of up to .30%, 1%, 1% and .75% of the average daily net assets of the Class A, B, C and R shares, respectively. For the six months ended February 28, 2015, PIMS contractually agreed to limit such fees to .50% of the average daily net assets of the Class R shares. As of April 11, 2014, the last conversion of Class X shares to Class A shares was completed. There are no Class X shares outstanding and Class X shares are no longer being offered for sale.

Prior to the final conversion of Class X shares, Management received the maximum allowable amount of sales charges for Class X shares in accordance with regulatory limits. As such, any contingent deferred sales charges received by the Manager were contributed back into the Fund and included in the Financial Highlights as a contribution to capital.

PIMS has advised the Fund that it has received $82,841 in front-end sales charges resulting from sales of Class A shares during the six months ended February 28, 2015. From these fees, PIMS paid such sales charges to affiliated broker-dealers, which in turn paid commissions to salespersons and incurred other distribution costs.


Prudential Jennison Mid-Cap Growth Fund, Inc.			27

Notes to Financial Statements

(Unaudited) continued

PIMS has advised the Fund that for the six months ended February 28, 2015, it received $112, $19,967 and $624 in contingent deferred sales charges imposed upon redemptions by certain Class A, Class B and Class C shareholders, respectively.

PI, PIMS, PAD and Jennison are indirect, wholly-owned subsidiaries of Prudential Financial, Inc. (“Prudential”).

Note 3. Other Transactions with Affiliates

Prudential Mutual Fund Services LLC (“PMFS”), an affiliate of PI and an indirect, wholly-owned subsidiary of Prudential, serves as the Fund’s transfer agent. Transfer agent’s fees and expenses in the Statement of Operations include certain out-of-pocket expenses paid to non-affiliates, where applicable.

Prudential Investment Management, Inc. (“PIM”), an indirect, wholly-owned subsidiary of Prudential, is the Fund’s securities lending agent. Earnings from securities lending are disclosed on the Statement of Operations as “Affiliated income from securities lending, net”. For the six months ended February 28, 2015, PIM has been compensated approximately $156,000 for these services.

The Fund invests in the Prudential Core Taxable Money Market Fund (the “Core Fund”), a portfolio of Prudential Investment Portfolios 2, registered under the 1940 Act and managed by PI. Earnings from the Core Fund are disclosed on the Statement of Operations as “Affiliated dividend income”.

Note 4. Portfolio Securities

Purchases and sales of investment securities, other than short-term investments, for the six months ended February 28, 2015, were $2,085,704,048 and $2,621,113,002, respectively.


28

Note 5. Tax Information

The United States federal income tax basis of the Fund’s investments and the net unrealized appreciation as of February 28, 2015 were as follows:


Tax Basis	$	7,756,550,237

Appreciation		3,203,186,936
Depreciation		(87,215,684	)

Net Unrealized Appreciation	$	3,115,971,252

The book basis may differ from tax basis due to certain tax-related adjustments.

Under the Regulated Investment Company Modernization Act of 2010 (the “Act”), the Fund is permitted to carryforward capital losses realized on or after September 1, 2011 (“post-enactment losses”) for an unlimited period. Post-enactment losses are required to be utilized before the utilization of losses incurred prior to the effective date of the Act. As a result of this ordering rule, capital loss carryforwards related to taxable years ending before August 31, 2012 (“pre-enactment losses”) may have an increased likelihood to expire unused. The Fund utilized approximately $3,121,000 of its pre-enactment losses to offset net taxable gains realized in the fiscal year ended August 31, 2014. As of August 31, 2014, the pre and post-enactment losses were approximately:


Post-Enactment Losses:	$	0

Pre-Enactment Losses:
Expiring 2016	$	6,242,000

A portion of the capital loss carryforward was assumed by the Fund as a result of an acquisition. Realization of such loss is limited in accordance with federal tax regulations.

Management has analyzed the Fund’s tax positions taken on federal, state and local income tax returns for all open tax years and has concluded that no provision for income tax is required in the Fund’s financial statements for the current reporting period. The Fund’s federal, state and local income and federal excise tax returns for tax years for which the applicable statutes of limitations have not expired are subject to examination by the Internal Revenue Service and state departments of revenue.


Prudential Jennison Mid-Cap Growth Fund, Inc.			29

Notes to Financial Statements

(Unaudited) continued

Note 6. Capital

The Fund offers Class A, Class B, Class C, Class Q, Class R, and Class Z shares. Class A shares are sold with a front-end sales charge of up to 5.50%. All investors who purchase Class A shares in an amount of $1 million or more and sell these shares within 12 months of purchase are subject to a contingent deferred sales charge (“CDSC”) of 1%. Class B shares are sold with a CDSC which declines from 5% to zero depending on the period of time the shares are held. Class B shares will automatically convert to Class A shares on a quarterly basis approximately seven years after purchase. Class B shares are closed to new purchases. Class C shares are sold with a CDSC of 1% on shares redeemed within the first 12 months of purchase. As of April 11, 2014, the last conversion of Class X shares to Class A shares was completed. There are no Class X shares outstanding and Class X shares are no longer being offered for sale. Class Q, Class R and Class Z shares are not subject to any sales or redemption charge and are offered exclusively for sale to a limited group of investors. On or about the close of business on April 8, 2013, the Fund was closed to new investors.

Under certain circumstances, an exchange may be made from specified share classes of the Fund to one or more other share classes of the Fund as presented in the table of transactions in shares of common stock.

There are 2 billion shares of $.001 par value common stock authorized divided into eight classes, designated Class A, Class B, Class C, Class M, Class Q, Class R, Class X and Class Z, which consists of 825 million, 300 million, 300 million, 25 million, 200 million, 100 million, 25 million and 225 million authorized shares, respectively.


30

Transactions in shares of common stock were as follows:


Class A	Shares			Amount
Six month ended February 28, 2015:
Shares sold		6,513,351		$	255,796,490
Shares issued in reinvestment of dividends and distributions		8,519,578			322,125,221
Shares reacquired		(17,807,752	)		(693,644,439	)

Net increase (decrease) in shares outstanding before conversion		(2,774,823	)		(115,722,728	)
Shares issued upon conversion from Class B and Class Z		75,069			3,015,146
Shares reacquired upon conversion into Class Z		(2,629,759	)		(110,196,093	)

Net increase (decrease) in shares outstanding		(5,329,513	)	$	(222,903,675	)

Year ended August 31, 2014:
Shares sold		15,896,647		$	613,773,490
Shares issued in reinvestment of dividends and distributions		2,197,646			82,109,809
Shares reacquired		(22,850,642	)		(884,273,176	)

Net increase (decrease) in shares outstanding before conversion		(4,756,349	)		(188,389,877	)
Shares issued upon conversion from Class B, Class C, Class R, Class X and Class Z		232,290			8,986,410
Shares reacquired upon conversion into Class Q and Class Z		(2,700,190	)		(106,777,517	)

Net increase (decrease) in shares outstanding		(7,224,249	)	$	(286,180,984	)

Class B
Six months ended February 28, 2015:
Shares sold		7,878		$	257,139
Shares issued in reinvestment of dividends and distributions		128,602			4,134,558
Shares reacquired		(70,157	)		(2,388,074	)

Net increase (decrease) in shares outstanding before conversion		66,323			2,003,623
Shares reacquired upon conversion into Class A		(46,269	)		(1,634,523	)

Net increase (decrease) in shares outstanding		20,054		$	369,100

Year ended August 31, 2014:
Shares sold		51,731		$	1,728,503
Shares issued in reinvestment of dividends and distributions		35,028			1,143,670
Shares reacquired		(137,942	)		(4,649,233	)

Net increase (decrease) in shares outstanding before conversion		(51,183	)		(1,777,060	)
Shares reacquired upon conversion into Class A		(135,817	)		(4,576,051	)

Net increase (decrease) in shares outstanding		(187,000	)	$	(6,353,111	)


Prudential Jennison Mid-Cap Growth Fund, Inc.			31

Notes to Financial Statements

(Unaudited) continued


Class C	Shares			Amount
Six months ended February 28, 2015:
Shares sold		241,904		$	7,954,383
Shares issued in reinvestment of dividends and distributions		580,341			18,657,964
Shares reacquired		(472,255	)		(16,060,416	)

Net increase (decrease) in shares outstanding before conversion		349,990			10,551,931
Shares reacquired upon conversion into Class Z		(71,128	)		(2,449,253	)

Net increase (decrease) in shares outstanding		278,862		$	8,102,678

Year ended August 31, 2014:
Shares sold		261,918		$	8,761,934
Shares issued in reinvestment of dividends and distributions		148,325			4,844,285
Shares reacquired		(991,395	)		(33,464,579	)

Net increase (decrease) in shares outstanding before conversion		(581,152	)		(19,858,360	)
Shares issued upon conversion from Class Z		838			29,195
Shares reacquired upon conversion into Class A and Class Z		(172,073	)		(5,794,759	)

Net increase (decrease) in shares outstanding		(752,387	)	$	(25,623,924	)

Class Q
Six months ended February 28, 2015:
Shares sold		2,691,967		$	110,847,540
Shares issued in reinvestment of dividends and distributions		1,675,370			66,797,018
Shares reacquired		(1,700,512	)		(70,795,238	)

Net increase (decrease) in shares outstanding		2,666,825		$	106,849,320

Year ended August 31, 2014:
Shares sold		5,221,274		$	212,039,844
Shares issued in reinvestment of dividends and distributions		339,379			13,269,722
Shares reacquired		(3,018,006	)		(122,708,820	)

Net increase (decrease) in shares outstanding before conversion		2,542,647			102,600,746
Shares issued upon conversion from Class A and Class Z		259,930			10,305,913

Net increase (decrease) in shares outstanding		2,802,577		$	112,906,659


32


Class R	Shares			Amount
Six months ended February 28, 2015:
Shares sold		559,259		$	21,652,254
Shares issued in reinvestment of dividends and distributions		979,399			36,296,528
Shares reacquired		(1,411,222	)		(54,595,249	)

Net increase (decrease) in shares outstanding		127,436		$	3,353,533

Year ended August 31, 2014:
Shares sold		1,216,631		$	46,288,956
Shares issued in reinvestment of dividends and distributions		263,919			9,730,705
Shares reacquired		(2,702,667	)		(103,116,750	)

Net increase (decrease) in shares outstanding before conversion		(1,222,117	)		(47,097,089	)
Shares reacquired upon conversion into Class A and Class Z		(29,518	)		(1,117,210	)

Net increase (decrease) in shares outstanding		(1,251,635	)	$	(48,214,299	)

Class X
Period ended April 11, 2014*:
Shares sold		21		$	733
Shares issued in reinvestment of dividends and distributions		189			6,197
Shares reacquired		(323	)		(10,800	)

Net increase (decrease) in shares outstanding before conversion		(113	)		(3,870	)
Shares reacquired upon conversion into Class A		(10,771	)		(363,374	)

Net increase (decrease) in shares outstanding		(10,884	)	$	(367,244	)

Class Z
Six months ended February 28, 2015:
Shares sold		13,028,153		$	536,691,408
Shares issued in reinvestment of dividends and distributions		10,651,538			423,079,079
Shares reacquired		(19,453,207	)		(810,695,146	)

Net increase (decrease) in shares outstanding before conversion		4,226,484			149,075,341
Shares issued upon conversion from Class A and Class C		2,574,930			112,645,346
Shares reacquired upon conversion into Class A		(33,394	)		(1,380,623	)

Net increase (decrease) in shares outstanding		6,768,020		$	260,340,064

Year ended August 31, 2014:
Shares sold		25,369,796		$	1,022,537,935
Shares issued in reinvestment of dividends and distributions		2,448,320			95,606,895
Shares reacquired		(27,874,501	)		(1,124,548,336	)

Net increase (decrease) in shares outstanding before conversion		(56,385	)		(6,403,506	)
Shares issued upon conversion from Class A, Class C and Class R		2,519,778			104,250,133
Shares reacquired upon conversion into Class A, Class C and Class Q		(122,187	)		(4,942,740	)

Net increase (decrease) in shares outstanding		2,341,206		$	92,903,887

*	As of April 11, 2014, the last conversion of Class X shares to Class A shares was completed. There are no Class X shares outstanding and Class X shares are no longer being offered for sale.


Prudential Jennison Mid-Cap Growth Fund, Inc.			33

Notes to Financial Statements

(Unaudited) continued

Note 7. Borrowings

The Fund, along with other affiliated registered investment companies (the “Funds”), is a party to a Syndicated Credit Agreement (“SCA”) with a group of banks. The purpose of the SCA is to provide an alternative source of temporary funding for capital share redemptions. The SCA provides for a commitment of $900 million for the period October 9, 2014 through October 8, 2015. The Funds pay an annualized commitment fee of 0.075% on the unused portion of the SCA. Prior to October 9, 2014, the Funds had another SCA that provided a commitment of $900 million and the Funds paid an annualized commitment fee of .08% of the unused portion of the SCA. Interest on any borrowings under the SCA is paid at contracted market rates. The commitment fee for the unused amount is accrued daily and paid quarterly.

The Fund did not utilize the SCA during the six months ended February 28, 2015.


34

Financial Highlights

(Unaudited)


Class A Shares
	Six Months Ended February 28,			Year Ended August 31,
	2015			2014			2013			2012			2011			2010
Per Share Operating Performance(a):
Net Asset Value, Beginning Of Period		$40.94			$35.49			$31.58			$27.44			$22.31			$20.24
Income (loss) from investment operations:
Net investment income (loss)		(.02	)		(.04	)		.02			(.01	)		.06			-	(e)
Net realized and unrealized gain on investments		3.33			6.49			4.85			4.32			5.07			2.08
Total from investment operations		3.31			6.45			4.87			4.31			5.13			2.08
Less Dividends and Distributions:
Dividends from net investment income		-			-			(.04	)		(.02	)		-			(.03	)
Distributions from net realized gains		(4.25	)		(1.00	)		(.92	)		(.15	)		-			-
Distributions in excess of net investment income		-			-			-			-			-			(.02	)
Total dividends and distributions		(4.25	)		(1.00	)		(.96	)		(.17	)		-			(.05	)
Capital Contributions(f)		-			-			-			-			-	(e)		.04
Net asset value, end of period		$40.00			$40.94			$35.49			$31.58			$27.44			$22.31
Total Return(b):		8.69%			18.42%			15.89%			15.78%			22.99%			10.48%

Ratios/Supplemental Data:
Net assets, end of period (000)		$3,460,545			$3,760,224			$3,515,357			$2,317,443			$1,693,618			$1,206,308
Average net assets (000)		$3,489,121			$3,759,607			$3,145,220			$1,948,077			$1,651,332			$1,050,256
Ratios to average net assets(c):
Expenses after waivers and/or expense reimbursement		1.07%	(g)		1.05%			1.07%			1.06%			1.09%	(d)		1.12%
Expenses before waivers and/or expense reimbursement		1.07%	(g)		1.05%			1.07%			1.06%			1.09%	(d)		1.12%
Net investment income (loss)		(.12)%	(g)		(.09)%			.07%			(.05)%			.22%			.01%
Portfolio turnover rate		21%	(h)		42%			39%			49%			45%			49%

(a) Calculated based on average shares outstanding during the period.

(b) Total return does not consider the effects of sales loads. Total return is calculated assuming a purchase of a share on the first day and a sale on the last day of each period reported and includes reinvestment of dividends and distributions. Total returns may reflect adjustments to conform to generally accepted accounting principles. Total returns for periods less than one full year are not annualized.

(d) Includes tax expense of .01%.

(e) Less than $.005 per share.

(f) The Fund received payments related to a former affiliate’s settlement of regulatory proceedings involving allegations of improper trading in Fund shares during the fiscal years ended August 31, 2011 and August 31, 2010. The Fund was not involved in the proceedings or in the calculation of the amount of the settlement.

(g) Annualized.

(h) Not annualized.

See Notes to Financial Statements.


Prudential Jennison Mid-Cap Growth Fund, Inc.			35

Financial Highlights

(Unaudited) continued


Class B Shares
	Six Months Ended February 28,			Year Ended August 31,
	2015			2014			2013			2012			2011			2010
Per Share Operating Performance(a):
Net Asset Value, Beginning Of Period		$35.51			$31.11			$27.96			$24.46			$20.03			$18.26
Income (loss) from investment operations:
Net investment loss		(.14	)		(.27	)		(.17	)		(.20	)		(.11	)		(.14	)
Net realized and unrealized gain on investments		2.84			5.67			4.24			3.85			4.54			1.88
Total from investment operations		2.70			5.40			4.07			3.65			4.43			1.74
Less Dividends and Distributions:
Distributions from net realized gains		(4.25	)		(1.00	)		(.92	)		(.15	)		-			-
Capital Contributions(f)		-			-			-			-			-	(e)		.03
Net asset value, end of period		$33.96			$35.51			$31.11			$27.96			$24.46			$20.03
Total Return(b):		8.29%			17.62%			15.05%			15.00%			22.12%			9.69%

Ratios/Supplemental Data:
Net assets, end of period (000)		$38,737			$39,784			$40,676			$38,236			$38,268			$39,174
Average net assets (000)		$37,859			$41,158			$39,816			$37,196			$43,011			$44,611
Ratios to average net assets(c):
Expenses after waivers and/or expense reimbursement		1.77%	(g)		1.76%			1.76%			1.76%			1.79%	(d)		1.82%
Expenses before waivers and/or expense reimbursement		1.77%	(g)		1.76%			1.76%			1.76%			1.79%	(d)		1.82%
Net investment loss		(.83)%	(g)		(.80	)%		(.60	)%		(.75	)%		(.46	)%		(.67	)%
Portfolio turnover rate		21%	(h)		42%			39%			49%			45%			49%

(a) Calculated based on average shares outstanding during the period.

(d) Includes tax expense of .01%.

(e) Less than $.005 per share.

(g) Annualized.

(h) Not annualized.

See Notes to Financial Statements.


36


Class C Shares
	Six Months Ended February 28,			Year Ended August 31,
	2015			2014			2013			2012			2011			2010
Per Share Operating Performance(a):
Net Asset Value, Beginning Of Period		$35.51			$31.12			$27.96			$24.46			$20.03			$18.26
Income (loss) from investment operations:
Net investment loss		(.14	)		(.27	)		(.19	)		(.20	)		(.12	)		(.14	)
Net realized and unrealized gain on investments		2.85			5.66			4.27			3.85			4.55			1.88
Total from investment operations		2.71			5.39			4.08			3.65			4.43			1.74
Less Dividends and Distributions:
Distributions from net realized gains		(4.25	)		(1.00	)		(.92	)		(.15	)		-			-
Capital Contributions(f)		-			-			-			-			-	(e)		.03
Net asset value, end of period		$33.97			$35.51			$31.12			$27.96			$24.46			$20.03
Total Return(b):		8.32%			17.59%			15.08%			15.00%			22.12%			9.69%

Ratios/Supplemental Data:
Net assets, end of period (000)		$215,703			$215,599			$212,315			$157,257			$121,908			$99,639
Average net assets (000)		$209,430			$220,173			$190,455			$135,864			$124,914			$98,990
Ratios to average net assets(c):
Expenses after waivers and/or expense reimbursement		1.77%	(g)		1.76%			1.76%			1.76%			1.79%	(d)		1.82%
Expenses before waivers and/or expense reimbursement		1.77%	(g)		1.76%			1.76%			1.76%			1.79%	(d)		1.82%
Net investment loss		(.83)%	(g)		(.80)%			(.63)%			(.75)%			(.47)%			(.67)%
Portfolio turnover rate		21%	(h)		42%			39%			49%			45%			49%

(a) Calculated based on average shares outstanding during the period.

(d) Includes tax expense of .01%.

(e) Less than $.005 per share.

(g) Annualized.

(h) Not annualized.

See Notes to Financial Statements.


Prudential Jennison Mid-Cap Growth Fund, Inc.			37

Financial Highlights

(Unaudited) continued


Class Q Shares
	Six Months Ended February 28,			Year Ended August 31,									January 18, 2011(a) through August 31,
	2015			2014			2013			2012			2011
Per Share Operating Performance(b):
Net Asset Value, Beginning Of Period		$42.89			$36.95			$32.83			$28.51			$28.95
Income (loss) from investment operations:
Net investment income		.07			.15			.18			.13			.12
Net realized and unrealized gain (loss) on investments		3.51			6.79			5.03			4.49			(.56	)
Total from investment operations		3.58			6.94			5.21			4.62			(.44	)
Less Dividends and Distributions:
Dividends from net investment income		-			-			(.17	)		(.15	)		-
Distributions from net realized gains		(4.25	)		(1.00	)		(.92	)		(.15	)		-
Total dividends and distributions		(4.25	)		(1.00	)		(1.09	)		(.30	)		-
Capital Contributions(h)		-			-			-			-			-	(g)
Net asset value, end of period		$42.22			$42.89			$36.95			$32.83			$28.51
Total Return(c):		8.94%			19.03%			16.39%			16.35%			(1.52)%

Ratios/Supplemental Data:
Net assets, end of period (000)		$778,237			$676,208			$479,117			$301,497			$160,511
Average net assets (000)		$698,373			$569,472			$436,722			$220,693			$97,743
Ratios to average net assets(d):
Expenses after waivers and/or expense reimbursement		.59%	(e)		.58%			.59%			.60%			.61%	(e)(f)
Expenses before waivers and/or expense reimbursement		.59%	(e)		.58%			.59%			.60%			.61%	(e)(f)
Net investment income		.34%	(e)		.38%			.52%			.42%			.60%	(e)
Portfolio turnover rate		21%	(i)		42%			39%			49%			45%	(i)

(a) Inception date of Class Q shares.

(b) Calculated based on average shares outstanding during the period.

(c) Total return is calculated assuming a purchase of a share on the first day and a sale on the last day of each period reported and includes reinvestment of dividends and distributions. Total returns may reflect adjustments to conform to generally accepted accounting principles. Total returns for periods less than one full year are not annualized.

(d) Does not include expenses of the underlying portfolios in which the Fund invests.

(e) Annualized.

(f) Includes tax expense of .01%.

(g) Less than $.005 per share.

(h) The Fund received payments related to a former affiliate’s settlement of regulatory proceedings involving allegations of improper trading in Fund shares during the fiscal year ended August 31, 2011. The Fund was not involved in the proceedings or in the calculation of the amount of the settlement.

(i) Not annualized.

See Notes to Financial Statements.


38


Class R Shares
	Six Months Ended February 28,			Year Ended August 31,
	2015			2014			2013			2012			2011			2010
Per Share Operating Performance(a):
Net Asset Value, Beginning Of Period		$40.23			$34.96			$31.15			$27.10			$22.08			$20.04
Income (loss) from investment operations:
Net investment income (loss)		(.06	)		(.12	)		(.04	)		(.07	)		-	(e)		(.05	)
Net realized and unrealized gain on investments		3.27			6.39			4.77			4.27			5.02			2.06
Total from investment operations		3.21			6.27			4.73			4.20			5.02			2.01
Less Dividends and Distributions:
Dividends from net investment income		-			-			-			-			-			(.01	)
Distributions from net realized gains		(4.25	)		(1.00	)		(.92	)		(.15	)		-			-
Distributions in excess of net investment income		-			-			-			-			-			-	(e)
Total dividends and distributions		(4.25	)		(1.00	)		(.92	)		(.15	)		-			(.01	)
Capital Contributions(f)		-			-			-			-			-	(e)		.04
Net asset value, end of period		$39.19			$40.23			$34.96			$31.15			$27.10			$22.08
Total Return(b):		8.59%			18.18%			15.64%			15.57%			22.74%			10.23%

Ratios/Supplemental Data:
Net assets, end of period (000)		$370,410			$375,174			$369,743			$283,158			$171,848			$95,701
Average net assets (000)		$362,992			$383,032			$332,920			$221,144			$154,320			$69,420
Ratios to average net assets(c):
Expenses after waivers and/or expense reimbursement		1.27%	(g)		1.26%			1.26%			1.26%			1.29%	(d)		1.32%
Expenses before waivers and/or expense reimbursement		1.52%	(g)		1.51%			1.51%			1.51%			1.54%	(d)		1.57%
Net investment income (loss)		(.33)%	(g)		(.30)%			(.12)%			(.25)%			.01%			(.21)%
Portfolio turnover rate		21%	(h)		42%			39%			49%			45%			49%

(a) Calculated based on average shares outstanding during the period.

(b) Total return is calculated assuming a purchase of a share on the first day and a sale on the last day of each period reported and includes reinvestment of dividends and distributions. Total returns may reflect adjustments to conform to generally accepted accounting principles. Total returns for periods less than one full year are not annualized.

(d) Includes tax expense of .01%.

(e) Less than $.005 per share.

(g) Annualized.

(h) Not annualized.

See Notes to Financial Statements.


Prudential Jennison Mid-Cap Growth Fund, Inc.			39

Financial Highlights

(Unaudited) continued


Class X Shares
	Period Ended April 11,			Year Ended August 31,
	2014(i)			2013			2012			2011			2010			2009
Per Share Operating Performance(a):
Net Asset Value, Beginning Of Period		$31.20			$28.03			$24.53			$20.08			$18.31			$21.84
Income (loss) from investment operations:
Net investment loss		(.16	)		(.12	)		(.20	)		(.10	)		(.13	)		(.06	)
Net realized and unrealized gain on investments		2.47			4.21			3.85			4.55			1.87			(3.47	)
Total from investment operations		2.31			4.09			3.65			4.45			1.74			(3.53	)
Less Distributions:
Distributions from net realized gains		(1.00	)		(.92	)		(.15	)		-			-			-
Capital Contributions(f)		-			-			-			-	(e)		.03			-
Net asset value, end of period		$32.51			$31.20			$28.03			$24.53			$20.08			$18.31
Total Return(b):		7.37%			15.08%			14.95%			22.16%			9.67%			(16.16)%

Ratios/Supplemental Data:
Net assets, end of period (000)		$10			$340			$1,090			$1,861			$2,976			$4,388
Average net assets (000)		$203			$681			$1,475			$2,606			$4,024			$4,567
Ratios to average net assets(c):
Expenses after waivers and/or expense reimbursement		1.72%	(g)		1.74%			1.76%			1.79%	(d)		1.82%			1.91%
Expenses before waivers and/or expense reimbursement		1.72%	(g)		1.74%			1.76%			1.79%	(d)		1.82%			1.91%
Net investment loss		(.76)%	(g)		(.41)%			(.76)%			(.42)%			(.65)%			(.36)%
Portfolio turnover rate		42%	(h)(j)		39%			49%			45%			49%			59%

(a) Calculated based on average shares outstanding during the period.

(d) Includes tax expense of .01%.

(e) Less than $.005 per share.

(g) Annualized.

(h) Not annualized.

(i) As of April 11, 2014, the last conversion of Class X shares to Class A shares was completed. There are no Class X shares outstanding and Class X shares are no longer being offered for sale.

(j) Calculated as of August 31, 2014.

See Notes to Financial Statements.


40


Class Z Shares
	Six Months Ended February 28,			Year Ended August 31,
	2015			2014			2013			2012			2011			2010
Per Share Operating Performance(a):
Net Asset Value, Beginning Of Period		$42.76			$36.92			$32.80			$28.48			$23.09			$20.94
Income (loss) from investment operations:
Net investment income		.03			.08			.12			.08			.14			.07
Net realized and unrealized gain on investments		3.50			6.76			5.04			4.49			5.25			2.16
Total from investment operations		3.53			6.84			5.16			4.57			5.39			2.23
Less Dividends and Distributions:
Dividends from net investment income		-			-			(.12	)		(.10	)		-			(.07	)
Distributions from net realized gains		(4.25	)		(1.00	)		(.92	)		(.15	)		-			-
Dividends in excess of net investment income		-			-			-			-			-			(.04	)
Total dividends and distributions		(4.25	)		(1.00	)		(1.04	)		(.25	)		-			(.11	)
Capital Contributions(f)		-			-			-			-			-	(e)		.03
Net asset value, end of period		$42.04			$42.76			$36.92			$32.80			$28.48			$23.09
Total Return(b):		8.84%			18.77%			16.23%			16.15%			23.34%			10.79%

Ratios/Supplemental Data:
Net assets, end of period (000)		$5,354,605			$5,157,002			$4,365,726			$2,585,535			$1,150,581			$542,149
Average net assets (000)		$5,124,180			$4,850,885			$3,637,810			$1,717,792			$896,253			$484,618
Ratios to average net assets(c):
Expenses after waivers and/or expense reimbursement		.77%(g)			.77%			.77%			.76%			.79%	(d)		.82%
Expenses before waivers and/or expense reimbursement		.77%(g)			.77%			.77%			.76%			.79%	(d)		.82%
Net investment income		.16%(g)			.19%			.35%			.25%			.47%			.31%
Portfolio turnover rate		21%(h)			42%			39%			49%			45%			49%

(a) Calculated based on average shares outstanding during the period.

(d) Includes tax expense of .01%.

(e) Less than $.005 per share.

(g) Annualized.

(h) Not annualized.

See Notes to Financial Statements.


Prudential Jennison Mid-Cap Growth Fund, Inc.			41

Results of Proxy Voting

(Unaudited)

At the special meeting of shareholders held on November 26, 2014, shareholders of the Prudential Jennison Mid-Cap Growth Fund, Inc. (the “Fund”), approved the following proposal:

To elect twelve Directors:


	SHARES VOTED		% OF VOTED			% OF TOTAL
(a) Ellen S. Alberding;
FOR		150,496,346.130		98.660	%		61.704	%
WITHHELD		2,044,437.228		1.340	%		0.838	%

(b) Kevin J. Bannon;
FOR		150,532,940.607		98.684	%		61.719	%
WITHHELD		2,007,842.751		1.316	%		0.823	%

(c) Linda W. Bynoe;
FOR		150,509,720.962		98.669	%		61.710	%
WITHHELD		2,031,062.396		1.331	%		0.832	%

(d) Keith F. Hartstein;
FOR		150,532,513.715		98.684	%		61.719	%
WITHHELD		2,008,269.643		1.316	%		0.823	%

(e) Michael S. Hyland;
FOR		150,500,440.571		98.663	%		61.706	%
WITHHELD		2,040,342.787		1.337	%		0.836	%

(f) Stephen P. Munn;
FOR		150,419,590.114		98.610	%		61.673	%
WITHHELD		2,121,193.244		1.390	%		0.869	%

(g) James E. Quinn;
FOR		150,451,421.311		98.631	%		61.686	%
WITHHELD		2,089,362.047		1.369	%		0.856	%

(h) Richard A. Redeker;
FOR		150,477,376.837		98.648	%		61.696	%
WITHHELD		2,063,406.521		1.352	%		0.846	%

(i) Stephen G. Stoneburn;
FOR		150,410,583.053		98.604	%		61.669	%
WITHHELD		2,130,200.305		1.396	%		0.873	%

(j) Stuart S. Parker;
FOR		150,518,862.646		98.675	%		61.713	%
WITHHELD		2,021,920.712		1.325	%		0.829	%

(k) Scott E. Benjamin; and
FOR		150,487,598.917		98.655	%		61.701	%
WITHHELD		2,053,184.441		1.345	%		0.841	%


42


	SHARES VOTED		% OF VOTED			% OF TOTAL
(l) Grace C. Torres.
FOR		150,553,345.494		98.698	%		61.728	%
WITHHELD		1,987,437.864		1.302	%		0.814	%

The special meeting of shareholders of the Fund held on November 26, 2014, was adjourned to December 3, 2014, and further adjourned to December 10, 2014 to permit further solicitation of proxies on the proposals noted below.

An abstention or a broker non-vote is considered present for purposes of determining a quorum but has the effect of a vote against such matters. At the special meeting of shareholders held on December 10, 2014, insufficient votes were obtained to approve the following proposals:

Proposal 1: To permit PI to enter into or make material changes to the Fund’s subadvisory agreements with subadvisers that are wholly-owned subsidiaries of PI or a sister company of PI (wholly-owned subadvisers) without shareholder approval.


	SHARES VOTED		% OF VOTED			% OF TOTAL
FOR		71,272,663.721		46.696	%		29.222	%
AGAINST		3,850,446.306		2.523	%		1.579	%
ABSTAIN		1,314,510.470		0.861	%		0.539	%
BROKER NON-VOTE		76,196,287.706		49.920	%		31.241	%

TOTAL		152,633,908.203		100.000	%		62.581	%

Proposal 2: To designate the Fund’s investment objective as a non-fundamental policy of the Fund, meaning that the Fund’s investment objective could be changed with the approval of the Fund’s Board of Directors, but without shareholder approval.


	SHARES VOTED		% OF VOTED			% OF TOTAL
FOR		47,476,955.428		31.106	%		19.466	%
AGAINST		27,351,562.785		17.920	%		11.214	%
ABSTAIN		1,609,103.284		1.054	%		0.660	%
BROKER NON-VOTE		76,196,287.706		49.920	%		31.241	%

TOTAL		152,633,908.203		100.000	%		62.581	%


Prudential Jennison Mid-Cap Growth Fund, Inc.			43

ⁿ MAIL

ⁿ TELEPHONE

ⁿ WEBSITE

Gateway Center Three

100 Mulberry Street

Newark, NJ 07102

(800) 225-1852

www.prudentialfunds.com

PROXY VOTING

The Board of Directors of the Fund has delegated to the Fund’s investment subadviser the responsibility for voting any proxies and maintaining proxy recordkeeping with respect to the Fund. A description of these proxy voting policies and procedures is available without charge, upon request, by calling (800) 225-1852. Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the Fund’s website and on the Securities and Exchange Commission’s website.

DIRECTORS

Ellen S. Alberding • Kevin J. Bannon • Scott E. Benjamin • Linda W. Bynoe • Keith F. Hartstein • Michael S. Hyland • Stephen P. Munn • Stuart S. Parker • James E. Quinn • Richard A. Redeker • Stephen G. Stoneburn • Grace C. Torres

OFFICERS

Stuart S. Parker, President • Scott E. Benjamin, Vice President • M. Sadiq Peshimam, Treasurer and Principal Financial and Accounting Officer • Raymond A. O’Hara, Chief Legal Officer • Deborah A. Docs, Secretary • Chad A. Earnst, Chief Compliance Officer • Theresa C. Thompson, Deputy Chief Compliance Officer • Richard W. Kinville, Anti-Money Laundering Compliance Officer • Jonathan Shain, Assistant Secretary • Claudia DiGiacomo, Assistant Secretary • Amanda S. Ryan, Assistant Secretary • Andrew R. French, Assistant Secretary • Peter Parrella, Assistant Treasurer • Lana Lomuti, Assistant Treasurer • Linda McMullin, Assistant Treasurer • Kelly A. Coyne, Assistant Treasurer


MANAGER	Prudential Investments LLC	Gateway Center Three 100 Mulberry Street Newark, NJ 07102

INVESTMENT SUBADVISER	Jennison Associates LLC	466 Lexington Avenue New York, NY 10017

DISTRIBUTOR	Prudential Investment Management Services LLC	Gateway Center Three 100 Mulberry Street Newark, NJ 07102

CUSTODIAN	The Bank of New York Mellon	One Wall Street New York, NY 10286

TRANSFER AGENT	Prudential Mutual Fund Services LLC	PO Box 9658 Providence, RI 02940

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM	KPMG LLP	345 Park Avenue New York, NY 10154

FUND COUNSEL	Willkie Farr & Gallagher LLP	787 Seventh Avenue New York, NY 10019

An investor should consider the investment objectives, risks, charges, and expenses of the Fund carefully before investing. The prospectus and summary prospectus contain this and other information about the Fund. An investor may obtain a prospectus and summary prospectus by visiting our website at www.prudentialfunds.com or by calling (800) 225-1852. The prospectus and summary prospectus should be read carefully before investing.

E-DELIVERY

To receive your mutual fund documents online, go to www.prudentialfunds.com/edelivery and enroll. Instead of receiving printed documents by mail, you will receive notification via email when new materials are available. You can cancel your enrollment or change your email address at any time by visiting the website address above.

SHAREHOLDER COMMUNICATIONS WITH DIRECTORS

Shareholders can communicate directly with the Board of Directors by writing to the Chair of the Board, Prudential Jennison Mid-Cap Growth Fund, Inc., Prudential Investments, Attn: Board of Directors, 100 Mulberry Street, Gateway Center Three, Newark, NJ 07102. Shareholders can communicate directly with an individual Director by writing to the same address. Communications are not screened before being delivered to the addressee.

AVAILABILITY OF PORTFOLIO SCHEDULE

The Fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission for the first and third quarters of each fiscal year on Form N-Q. The Fund’s Forms N-Q are available on the Commission’s website at www.sec.gov. The Fund’s Forms N-Q may also be reviewed and copied at the Commission’s Public Reference Room in Washington, D.C. Information on the operation and location of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The Fund’s schedule of portfolio holdings is also available on the Fund’s website as of the end of each month.

Mutual Funds:


ARE NOT INSURED BY THE FDIC OR ANY FEDERAL GOVERNMENT AGENCY		MAY LOSE VALUE		ARE NOT A DEPOSIT OF OR GUARANTEED BY ANY BANK OR ANY BANK AFFILIATE

LOGO

PRUDENTIAL JENNISON MID-CAP GROWTH FUND, INC.

SHARE CLASS

NASDAQ

PEEAX

PEEBX

PEGCX

PJGQX

JDERX

PEGZX

CUSIP

74441C105

74441C204

74441C303

74441C881

74441C600

74441C808

MF173E2 0275764-00001-00

Item 2 – Code of Ethics – Not required, as this is not an annual filing.

Item 3 – Audit Committee Financial Expert – Not required, as this is not an annual filing.

Item 4 – Principal Accountant Fees and Services – Not required, as this is not an annual filing.

Item 5 – Audit Committee of Listed Registrants – Not applicable.

Item 6 – Schedule of Investments – The schedule is included as part of the report to shareholders filed under Item 1 of this Form.

Item 7 – Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies – Not applicable.

Item 8 – Portfolio Managers of Closed-End Management Investment Companies – Not applicable.

Item 9 –

Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers – Not applicable.

Item 10 – Submission of Matters to a Vote of Security Holders – Not applicable.

Item 11 – Controls and Procedures

(a)

It is the conclusion of the registrant’s principal executive officer and principal financial officer that the effectiveness of the registrant’s current disclosure controls and procedures (such disclosure controls and procedures having been evaluated within 90 days of the date of this filing) provide reasonable assurance that the information required to be disclosed by the registrant has been recorded, processed, summarized and reported within the time period specified in the Commission’s rules and forms and that the information required to be disclosed by the registrant has been accumulated and communicated to the registrant’s principal executive officer and principal financial officer in order to allow timely decisions regarding required disclosure.

(b)

There has been no significant change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter of the period covered by this report that has materially affected, or is likely to materially affect, the registrant’s internal control over financial reporting.

Item 12 – Exhibits


(a)	(1)	Code of Ethics – Not required, as this is not an annual filing.

	(2)	Certifications pursuant to Section 302 of the Sarbanes-Oxley Act – Attached hereto as Exhibit EX-99.CERT.

	(3)	Any written solicitation to purchase securities under Rule 23c-1. – Not applicable.

(b)	Certifications pursuant to Section 906 of the Sarbanes-Oxley Act – Attached hereto as Exhibit EX-99.906CERT.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


Registrant:		Prudential Jennison Mid-Cap Growth Fund, Inc.
By:		/s/ Deborah A. Docs
		Deborah A. Docs
		Secretary
Date:		April 20, 2015

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.


By:		/s/ Stuart S. Parker
		Stuart S. Parker
		President and Principal Executive Officer
Date:		April 20, 2015
By:		/s/ M. Sadiq Peshimam
		M. Sadiq Peshimam
		Treasurer and Principal Financial and Accounting Officer
Date:		April 20, 2015

Prudential Jennison Mid-cap Growth Fund N-CSRSCertified semi-annual shareholder report (management investment company)