* Insider buying can be an encouraging signal for potential investors. * A couple of biotech stocks saw some notable insider buying last week. * Some of these insiders made return trips to the buy window.Conventional wisdom says that insiders and 10% owners really only buy shares of a company for one reason -- they believe the stock price will rise and they want to profit from it. So insider buying can be an encouraging signal for potential investors, particularly during periods of uncertainty.Insiders continued to add shares despite overall market volatility and global economic gloom. Here are some of the most noteworthy insider purchases reported in the past week.Immunomedics An Immunomedics, Inc. (NASDAQ: IMMU) director took advantage of a common stock offering to add 1.75 million shares. At the offering price of $28.50 per share, that cost the director almost $49.88 million and raised the stake to 26.25 million shares. Shares outstanding number fewer and 180 million.Immunomedics stock ended last week's trading at $30.38 per share, so the purchase seems well timed. The share price is up more than 157% since its year-to-date low last month.See Also: Elon Musk Says Tesla's Stock Price Is Too High, Tweets About Freedom, Gene Wilder And MoreMyovant Sciences Myovant Sciences Ltd (NYSE: MYOV) saw 10% owner Sumitomo Chemical purchase about 190,500 shares of this London-based biopharmaceutical company last week at prices averaging about $12.05 apiece. That totaled almost $2.30 million. Note that Myovant's parent is a subsidiary of Sumitomo, which frequently has been buying shares since establishing a Rule 10b5-1 stock trading plan during the market's pandemic selling panic in mid-March.Myovant stock ended the week trading at $11.15, below the above purchase price. However, shares are still up more than 68% from their year-to-date low in March.Simply Good Foods A director at Simply Good Foods Co (NASDAQ: SMPL) returned to the buy window last week. That director bought more than 87,800 shares at prices ranging from $16.76 to $17.00, totaling over $1.48 million. The director and seven others were purchasing shares throughout April.Simply Good Foods stock popped more than 3% in the past week and closed most recently at $18.35 a share. That is well above the director's latest purchase price range.Cincinnati Financial A pair of Cincinnati Financial Corporation (NASDAQ: CINF) directors shelled out $72.25 to $72.51 per share for 5,500 shares altogether of this property casualty insurance provider. That cost them more than $398,200, and it came in the wake of posting earnings that fell short of Wall Street expectations.The latest close at $60.95 per share is well below the purchase price range above, and it came after the shares hit a 52-week low of $60.00 on Friday. The stock is down about 42% year to date, while the S&P 500 is less than 10% lower.In addition, note that there was some amount of insider buying at AGNC Investment Corp (NASDAQ: AGNC), Sterling Bancorp (NYSE: STL) and Webster Financial Corporation (NYSE: WBS) last week as well.Keep up with all the latest breaking news and trading ideas by following Benzinga on Twitter.See more from Benzinga * Notable Insider Buys Of The Past Week: JPMorgan, Huntington Ingalls And More * Notable Insider Buys In The Past Week: Carnival, MGM And More(C) 2020 Benzinga.com. Benzinga does not provide investment advice. All rights reserved.

Cincinnati Financial Corporation (Nasdaq: CINF) announced that at its regular meeting on May 2, 2020, the board of directors declared a 60-cents-per-share regular quarterly cash dividend. The dividend is payable July 15, 2020, to shareholders of record as of June 17, 2020.

Cincinnati Financial Corporation (Nasdaq: CINF) today announced that based on preliminary voting results at the company's annual meeting on May 2, 2020, shareholders elected all directors for one-year terms to the 13-member board. Shareholders also approved a nonbinding resolution to approve the compensation for the company's named executive officers and ratified the selection of Deloitte & Touche LLP as independent registered public accounting firm for 2020.

The analysts covering Cincinnati Financial Corporation (NASDAQ:CINF) delivered a dose of negativity to shareholders...

Chubb's (CB) first-quarter 2020 results reflect strong premiums owing to solid segmental performance.

A huge Cincinnati public company has greatly improved its rating on an annual gender equity scorecard tracking the performance of a variety of public companies from around the country.

Cincinnati's (CINF) first-quarter 2020 results indicate decline in underwriting income across its P&C insurance operations.

Wells Fargo & Co., Cincinnati Financial Corp., ProAssurance Corp. and The Brink's Co. have reached their three-year lows Continue reading...

Cincinnati Financial (CINF) is seeing favorable earnings estimate revision activity and has a positive Zacks Earnings ESP heading into earnings season.

Aflac's (AFL) Q1 earnings results are likely to reflect higher contribution from U.S. segment, partly offset by weakness at Japan business and a rise in overall expenses.

Cincinnati (CINF) plans to credit premiums to its auto insurance customers, which, in turn, is likely to relieve clients of financial stress during the pandemic.

Cincinnati Financial (CINF) has an impressive earnings surprise history and currently possesses the right combination of the two key ingredients for a likely beat in its next quarterly report.

Cincinnati Financial Corporation (Nasdaq: CINF) announced that two of its property casualty insurance subsidiaries, The Cincinnati Insurance Company and The Cincinnati Casualty Company, will offer a 15% personal lines auto credit for current policyholders.

Cincinnati Financial (CINF) reported earnings 30 days ago. What's next for the stock? We take a look at earnings estimates for some clues.

Cincinnati Financial (CINF) delivered earnings and revenue surprises of -23.64% and 3.95%, respectively, for the quarter ended March 2020. Do the numbers hold clues to what lies ahead for the stock?

Q1 2020 Cincinnati Financial Corp Earnings Call

W.R. Berkley (WRB) first-quarter 2020 results indicate strong net premiums written, partially offset by high costs incurred.

W.R. Berkley's (WRB) first-quarter 2020 results are likely to reflect higher premiums, efficient pricing decisions and share buybacks.

It is now my pleasure to hand the conference over to Mr. Dennis McDaniel, Investor Relations Officer for Cincinnati Financial. Hello, this is Dennis McDaniel at Cincinnati Financial. Late yesterday, we issued a news release on our results, along with our supplemental financial package, including our quarter end investment portfolio.

Cincinnati's (CINF) first-quarter 2020 results are likely to reflect higher premiums and efficient pricing decisions across its business lines.